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2015 MAINE POTATO VARIETY TRIALS NE1231 REGIONAL TRIALS AND ADVANCED BREEDING LINES EXETER, PRESQUE ISLE, AND ST. AGATHA, MAINE Gregory A. Porter, Professor of Agronomy Paul C. Ocaya, Research Associate Bruce MacFarline, Scientific Technician Beth Plummer, Scientific Technician School of Food & Agriculture and Maine Agricultural and Forest Experiment Station University of Maine Orono, ME 04469 Not for Reproduction without Permission -Comments Welcome- Mimeo 2015-01

2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

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Page 1: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

2015 MAINE POTATO VARIETY TRIALS

NE1231 REGIONAL TRIALS AND ADVANCED BREEDING LINES

EXETER, PRESQUE ISLE, AND ST. AGATHA, MAINE

Gregory A. Porter, Professor of Agronomy

Paul C. Ocaya, Research Associate

Bruce MacFarline, Scientific Technician

Beth Plummer, Scientific Technician

School of Food & Agriculture

and

Maine Agricultural and Forest Experiment Station

University of Maine

Orono, ME 04469

Not for Reproduction

without Permission

-Comments Welcome-

Mimeo 2015-01

Page 2: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

CONTENTS

Introduction 1

Methods 1

Results:

Discussion of Trial Results 1Top Prospects in the 2015 Trials 4

Results (Data Tables):

Management Practices by Location 7Rainfall by Location 8Aroostook Research Farm NE1231 Regional Trials 9Central Maine NE1231 Regional Trial 15Northern Aroostook County NE1231 Regional Trials 17French Fry Color and Uniformity, NE1231 Trials (2015 Crop) 21French Fry Color and Texture, NE1231 Trials (2014 Crop) 22Storage Evaluations (Small-lot Samples, 2014 Crop) 23Central Maine March Chip Colors (2014 Crop) 26Central Maine Advanced Breeding Clone Trial, 2015 27Northern Aroostook County Advanced Breeding Line Trials, 2015 29French Fry Color and Uniformity, Advanced Russet Trial (2015 Crop) 34Advanced Red- and Purple-skinned Clone Trial, 2015 36Washed Ratings Appearance from Storage (2014 Red Trials) 38Sensory Evaluation for Baked and Boiled Quality (2014 Crop) 40Key to NE1231 Rating Codes 41

ACKNOWLEDGMENTS

This project represents the combined efforts of many people and we are appreciative ofall those involved. Most of the funding comes from the University of Maine and a USDA-NIFA Special Grant for Potato Breeding Research (Potato Breeding and Variety Developmentin Eastern United States). We greatly appreciate the field sites and management provided byour grower cooperators during 2015 (Crane Farms, Inc. for the Exeter site and Labrie Farms,Inc. for the St. Agatha site). Many thanks to the Maine Seed Potato Board, Maine PotatoBreeding Program, Cornell University, Michigan State University, Colorado State University,University of Wisconsin, North Dakota State University, and USDA Potato Breeding Program(Beltsville, MD and Aberdeen, ID) for providing seed potatoes for these trials.

Page 3: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Maine

G.A. Porter, P.C. Ocaya, B. MacFarline, and B. Plummer.

University of Maine; Orono, ME 04469

Introduction: Potato variety trials were conducted at three locations in Maine as part of the NE1231 Regional

Project (Development of New Potato Clones for Environmental and Economic Sustainability in the Northeast).

Forty-nine varieties and clones were tested at Aroostook Research Farm, Presque Isle, Maine. Thirty-four NE1231

and advanced breeding clones were tested on a commercial farm in Exeter (central Maine), while eighty-two

NE1231 and advanced breeding clones were tested on a commercial farm in St. Agatha (northern Maine). The

primary objective of all of the Maine trials is to determine performance, quality, and storage characteristics of

promising potato clones and new varieties in Maine.

Methods: Single-row plots, 25 feet long, were utilized for the NE1231 trials at Aroostook Research Farm. The plot

length for the advanced selection, Central Maine NE1231, and St. Agatha NE1231 trials was 20 feet. All trials were

hand planted using randomized complete block designs and four replications (two replications per treatment for

some of the clones in Central Maine and St. Agatha trials). The seedpiece spacing used for each line is listed in

subsequent tables. Details of important management practices are presented in Maine Table 1. At the Presque Isle

site the varieties were grouped so that separate tests could be vinekilled and harvested based on maturity

classification. Remaining cultural practices were similar to those used on commercial farms in the area. Specific

gravity was determined at harvest using the weight-in-air/weight-in-water method. Hollow heart ratings indicate

the number of hollow tubers observed per 40 large tubers examined. Percent hollow heart is based on 10 tubers per

replicate plot whenever 10 tubers of the appropriate size class are available. Unless noted otherwise chip color

evaluations were conducted during December following storage at 50 F. Chips were fried at 350 F for threeo o

minutes and evaluated using an Agtron M35, calibrated with the black "0" disk = 0 and the white "90" disk = 90.

Chips were crushed and reported values are means from four replicates per variety. Each sample was read three

times with thorough mixing between readings.

Susceptibility to skinning and shatter bruise was measured soon after harvest. Approximately 10 lbs of

tubers that exceeded 1f” diameter were tumbled in a drum with three stones for 1 minute at 15 rpm. Each tuber

was then rated for percentage of the tuber surface affected by skinning or shatter bruise and the percentage of tubers

with air and/or thumbnail cracks. An additional abrasive peel test was conducted on separate samples to determine

biochemical aspects of blackspot bruise susceptibility (see Pavek et al, APJ 62:511-517). Ten tubers per plot were

warmed for 24 hours and then abrasively peeled for 30 seconds. Color was allowed to develop for 24 h and then

individual tubers were rated for discoloration where 0=no discoloration and 5=severe discoloration. Shatter and

blackspot bruise susceptibility were measured with the weight-drop method as noted in Table 18.

Results:

Rainfall, General Growth, and Plant Stands. Rainfall by month and location is listed in Maine Table 2.

Rainfall was abundant and well distributed in Presque Isle and St. Agatha. Central Maine had wet conditions

during June; however, July had low rainfall. Supplemental irrigation was applied during July and August at the

Central Maine site.. Early plant growth was good at all three sites. Adirondack Red, Easton (AF3001-6),

Katahdin, Palisade Russet, Russet Norkotah, AF4550-2, , AF5275-1, AF5278-3, and ND8068-5Rus had relatively

poor early to mid-season vigor at the Presque Isle site. Katahdin, Snowden, AF5033-13, AF5386-4, AF5387-2,

AF5392-8, AF5393-1, AF5446-11, WAF10131-11, and WAF10131-19 had relatively poor early to mid-season

vigor at the Exeter site. Katahdin, Palisade Russet, Russet Norkotah, AF4532-9, AF5072-4, AF5072-12, AF5091-

2, AF5407-13, NDAF092239CB-2, ND8068-5Rus had relatively poor early to mid-season vigor at the St. Agatha

site. Pest control practices were effective at all sites. Plant stand equaled or exceeded 90% of targets for most

clones at all three sites. The only NE1231 regional trial exceptions were Katahdin (83%, St. Agatha), Palisade

Russet (89%, Presque Isle), Snowden (87%, Presque Isle), and NY154 (74%, Presque Isle). In the advanced

selection trials at Exeter and St. Agatha all clones had greater than 90% plant stands. Only Adirondack Red (89%)

at Presque Isle had less than 90% stands. Yields were average at Presque Isle and above average at Exeter and St.

Agatha. Total yields for Presque Isle, Exeter, and St. Agatha averaged 288, 437, and 438 cwt/A, respectively

(mean of six standard varieties grown at all locations).

1

Page 4: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Aroostook Research Farm NE1231 Regional Potato Variety Trials. Yield and quality results for the 2015

NE1231 trials at Aroostook Research Farm are presented in Maine Tables 3 to 8. Yields were only fair to good

despite adequate and well distributed rainfall. Tuber size varied greatly among the clones and hollow heart

incidence was generally low. In the red trial, none of the new clones that had higher U.S.#1 yields than the

standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards.

Atlantic, Sebec (AF0338-17), Yukon Gold, AF4442-4, and AF4975-3 had good yields in the mid-season trial.

Yukon Gold and AF4648-2 had the best tuber appearance. Russet Burbank was the top yielding variety in the

russet trial. Caribou Russet, Easton, and AF4124-7 also had good yields. Tuber appearance appearance was fair to

good for all clones except Palisade Russet, which was poor. External defects incidence was relatively low for most

clones and varieties. Those with high external defects incidence were: Katahdin, Kennebec, Palisade Russet,

Shepody, AF4648-2, AF4985-1, B2833-16, CO098-12-5, and NY154. Hollow heart incidence in large-sized tubers

was low except for Palisade Russet (8%), Shepody (5%), Snowden (10%), Yukon Gold (5%), and NY154 (10%).

Atlantic, AF4124-7, AF4157-6, AF4975-3, B2833-16, BNC244-10, ND8068-5Rus, and NY148 had the highest

specific gravities. Chip color scores were particularly good for Atlantic, AF4157-6, AF4648-2, AF4975-3,

ND8068-5Rus, and NY154.

Central Maine NE1231 Regional Potato Variety Trial. Yield and quality results for the 2015 NE1231 trial

at Exeter are presented in Maine Tables 9 and 10. Yields were good in this trial and tuber sizing was generally

good. Atlantic, Sebec, Superior, and AF4975-3 had especially high total and US#1 yields. AF4138-8 and AF4157-

6 had small tuber size profiles. Sebec, AF4138-8, AF4648-2, and NY148 had good tuber appearance scores.

Katahdin, Kennebec, Yukon Gold, AF4157-6, and B2833-16 had especially high external defects incidence (mostly

common scab), while Sebec, Superior, AF4138-8, and AF4648-2 had low incidence. Kennebec, and NY154 had

5% hollow heart incidence, while incidence in all other clones was low. Atlantic, Snowden, AF4975-3, B2833-16,

NY148, and NY154 had specific gravities of 1.085 or higher. Snowden, AF4157-6, AF4648-2, and AF4975-3 had

the best chip colors in the trial.

Northern Aroostook County NE1231 Regional Potato Variety Trials. Yield and quality results for the

2015 NE1231 trials at St. Agatha are presented in Maine Tables 11 to 14. Most varieties had very good yields at

the St. Agatha site. Atlantic, Sebec, AF4442-4 had particularly good yields in the round-white trial. Sebec and

AF4442-4 had good tuber appearance. None of the new reds had yields exceeding the Chieftain standard, however,

all of the test clones had yields that equaled or exceeded those of Dark Red Norland. Scab, possibly due to

powdery scab, detracted from the appearance of Dark Red Norland and AF4985-1. Caribou Russet (AF3362-1)

and Easton (AF3001-6) had particularly high total and US#1 yields in the russet trial. External defects were

prevalent with several clones exhibiting high levels of sunburn, off shapes, growth cracks, and/or scab. Dark Red

Norland, Katahdin, Kennebec, Palisade Russet, Shepody, Yukon Gold, AF4138-8, AF4648-2, AF4985-1,

CO09812-5R, and NY154 had especially high incidence of external tuber defects. Dark Red Norland, Kennebec,

Shepody, Yukon Gold, AF4138-8, AF4648-2, and AF4985-1 had high scab incidence, possibly due to powdery

scab. Palisade Russet, Teton Russet, and AF4985-1 had greater than 10% hollow heart incidence in large-sized

tubers. Atlantic and Snowden had particularly high specific gravities. AF4157-6, AF4975-3, and Easton had

particularly good chip color.

French Fry color and Uniformity, 2015 NE1231 Trials. Fry color and color uniformity were measured on

fresh cut tuber slabs taken from 50F storage (Table 15). Stem-end color defects were prevalent in many of the

clones, especially at the Presque Isle site. Fry color was darker at the St. Agatha site, but fewer clones had stem-

end defects. Teton Russet, AF4172-2, and ND8068-5Rus produced good quality fries at both sites. AF4113-2

produced good quality fries at the Presque Isle site. Easton produced good quality fries at the St. Agatha site.

French Fry Processing from the 2014 Aroostook Research Farm Test. French fry color and texture

evaluations were conducted on several 2014 NE1231 clones during winter of 2014-2015 (Table 16). Dakota

Trailblazer, Easton (AF3001-6), AF4124-4, AF4124-7, AF4296-3, AF4320-17and had especially light fry color.

Palisade Russet, Russet Norkotah, Shepody, A010101-1, AF4320-17, and AF4532-8 had significantly greater

graying than Russet Burbank. Fries from Caribou Russet (AF3362-1) and Russet Norkotah had poor texture.

Texture ratings for Palisade Russet and AF4532-8 were also relatively poor. Only Easton (AF3001-6) and

AF4296-3 french fries were judged to be better than Russet Burbank in overall fry quality (length, fry color,

2

Page 5: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

uniformity, graying, and/or texture). Dakota Russet, AF4124-4, AF4124-7, AF4172-2, and AF4342-3 were rated as

equal to Russet Burbank, while Caribou Russet (AF3362-1), Palisade Russet, Russet Norkotah, Shepody, Teton

Russet, A010101-1, AF4320-17, and AF4532-8 were judged as poorer than Russet Burbank.

Aroostook Research Farm Small-scale Storage Evaluations. Data on small-scale storage and processing

characteristics were collected from 41 NE1231 varieties and clones during the 2014-2015 storage season (Maine

Tables 17 and 18). Very good chip colors were obtained from 50 F February storage for the following clones growno

at Presque Isle: Atlantic, Dakota Trailblazer, Easton (AF3001-6), Shepody, Teton Russet, A010101-1, AF4124-4,

AF4157-6, AF4172-2, AF4296-3, AF4320-17, AF4342-3, and B2676-2. Atlantic, Snowden, AF4013-3, AF4157-6,

BNC182-5,MSQ086-3, NY148, and NYH15-17 produced very light chips from 50 F March storage in the Centralo

Maine test (Table 18). In the Presque Isle test, Atlantic, Dakota Trailblazer, Easton (AF3001-6), Kennebec,

Shepody, Snowden, Teton Russet, A010101-1, AF4013-3, AF4157-6, MSQ086-3, NY148, and NYH15-17 had

very light chip colors directly from 45 F storage. In the Central Maine test, Snowden, AF4013-3, AF4157-6,o

NY148, and NYH15-17 produced particularly good chip colors directly from 45 F storage. None of the clones ino

the Presque Isle test produced good chips directly out of 38 F storage; however, Atlantic, Snowden, AF4157-6,o

BNC182-5, and NY148 produced good chips when reconditioned from cold storage. French fry processing types

with relatively good reconditioning from 38 F storage were Dakota Trailblazer, Shepody, AF4124-4, AF4320-17,o

and AF4342-3. In the Central Maine test, Atlantic, Snowden, AF4013-3, AF4157-6, NY148, and NYH15-17

reconditioned very nicely from 45 F storage. o

Skinning and bruise test scores for the 2014 field season are presented in Maine Table 17. The skinning

and shatter bruise scores from the bruise barrel test were presented last year. Shatter bruise susceptibility scores

were particularly good for Caribou Russet (AF3362-1), Dakota Trailblazer, Palisade Russet, Rochdale Gold Doree,

Russet Burbank, Russet Norkotah, Shepody, Snowden, Superior, A010101-1, AF4013-3, AF4296-3, AF4342-3,

AF4640-1, B2833-16, MSQ086-3, NY150, and NYH15-17, while they were poor for Yukon Gold, AF4157-6,

AF4532-8, CO00291-5R, NY136, and NY148. Blackspot bruise susceptibility scores were particularly good for

Caribou Russet (AF3362-1), Dark Red Norland, Kennebec, Rochdale Gold Doree, Shepody, A010101-1, AF4138-

8, AF4172-2, BNC182-5, and MSQ086-3, while they were especially poor for Atlantic, Russet Burbank, AF4532-

8, AF4640-1, B2676-2, BNC244-10, CO00291-5R, and NY148.

Dakota Russet, Katahdin, Kennebec, Palisade Russet, Russet Burbank, Teton Russet, Yukon Gold,

AF4138-8, AF4157-6, AF4296-3, AF4342-3, CO00291-5R, MSQ086-3, NY136, and NY148 required at least 200

days to reach the one-half-inch sprout stage. Caribou Russet (AF3362-1), Sebec (AF0338-17), AF4320-17, B2833-

16, BNC182-5, and BNC244-10 reached the one-half-inch sprout stage in 170 days or less. Selections with very

low weight loss (<4%) from 38 F storage were: Caribou Russet (AF3362-1), Dakota Trailblazer, Russet Burbank,o

Russet Norkotah, Shepody, Snowden, Yukon Gold, A010101-1, AF4124-7, AF4320-17, AF4640-1, B2833-16,

MSQ086-3, and NY150. Selections with very low weight loss (<10%) from 50 F storage were: Caribou Russeto

(AF3362-1), Dakota Trailblazer, Easton, Katahdin, Kennebec, Palisade Russet, Rochdale Gold Doree, Russet

Burbank, Russet Norkotah, Shepody, Yukon Gold, A010101-1, AF4138-8, AF4157-6, AF4296-3, and AF4342-3.

Selections with high weight loss (19% or more) from 50 F storage were: Dark Red Norland, Sebec (AF0338-17),o

Snowden, AF4320-17, AF4532-8, B2833-16, BNC182-5, and NY148.

Central Maine Advanced Breeding Lines. Yield and quality results for the 2015 advanced breeding line

trials at Exeter are presented in Maine Tables 19 and 20. Clones with outstanding yields were AF4552-5, AF5416-

2, AF5426-3, AF5432-5, and NDAF102629C-4. Specific gravities were > 1.090 for Atlantic, Snowden, AF5040-8,

and AF5445-2. AF5281-4, AF5432-5, and AF5445-2 had very small tubers. Snowden, Snowden, AF5040-8,

AF5281-4, AF5386-4, AF5393-1, and AF5445-2 had especially high levels of external defects (especially common

scab). Atlantic, AF5320-1, AF5386-4, AF5387-2, AF5445-2 had 5% or more hollow heart. Chip color scores were

generally good, however, three clones had an Agtron score below 60: AF5432-5, AF5445-2, and WAF10131-11.

AF5281-4, AF5320-1, AF5392-8, AF5426-3, and NDAF102629C-4 had especially good chip color. AF5033-13,

AF5153-11, AF5426-3, and WAF10131-11 had particularly good tuber appearance.

Northern Aroostook County Advanced Breeding Lines. Yield and quality results for the 2015 advanced

breeding line trials at St. Agatha are presented in Maine Tables 21 to 24. Top performing clones for US#1 yields in

the round-white trial were: Atlantic, AF5450-7, BNC182-5, and BNC369-4. Atlantic, AF5429-3, and B2833-8 had

3

Page 6: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

specific gravities that were 1.085 or above. B3003-8 had severe growth crack problems and three clones had more

than 10% sunburn incidence (Katahdin, AF5447-4 and AF5467-13). AAF07847-2 and AF5467-13 had >10%

poorly shaped tubers. Katahdin, AF5215-2, AF5225-1, AF5280-5, AF5403-3, AF5429-3, AF5435-7, B2833-8, and

NDAF092239CB-2 had greater than 20% scab incidence. None of the clones had more than 2.5% hollow heart

incidence in large-sized tubers. AF5215-2 and AF5280-5 had chip color scores that were quite good (>65).

AF5044-19, B2833-8, BNC182-5, and BNC369-4 had particularly good tuber appearance.

Of 32 russet-long clones, Russet Burbank, A08065-2, AF4198-2, AF4609-1, AF4872-2, AF5071-2,

AF5312-1, AF5406-10, AF5407-13, AF5464-4, NDAF092412-3Rus, and WAF10073-3Rus had particularly good

US#1 yields. Specific gravities were generally moderate with four clones exceeding >1.080 (AF4615-5, AF4872-2,

AF5179-4, WAF10039-1Rus). Six clones had especially high external defects incidence: Shepody (sunburn, scab),

AF4615-5 (sunburn, growth cracks, scab), AF5057-13 (sunburn, scab), AF5202-1 (sunburn, growth cracks),

AF5203-7 (sunburn, scab), and AF5469-2 (growth cracks). Shepody, AAF08065-2, AF4950-2, AF5060-27,

AF5202-1, AF5406-7, and WAF10039-1Rus had hollow heart problems (>10% hollow in large tubers). Thirteen

clones had better chip color scores than both Russet Burbank and Shepody: AF4872-2, AF4950-2, AF5057-13,

AF5060-27, AF5071-2, AF5072-4, AF5091-2, AF5164-19, AF5202-1, AF5373-5, AF5406-10, NDAF092412-

3Rus, and WAF10039-1Rus. Russet Norkotah and AF5312-1 had good tuber appearance ratings.

French Fry color and Uniformity, 2015 Advanced Russet Trial. Fry color and color uniformity were

measured on fresh cut tuber slabs from 32 potato clones taken from 50F storage (Table 25). Color and stem-end

color defects were prevalent in many of the clones. Russet Burbank, AF4198-2, AF4532-9, AF4872-2, AF4950-2,

AF5057-13, AF5060-27, AF5071-2, AF5072-4, AF5072-12, AF5091-2, AF5091-8, AF5164-19, AF5314-2,

AF5406-10, AF5407-13, AF5469-2, WAF10039-1Rus, and NDAF092412-3Rus produced good quality fries.

Presque Isle Advanced Red- and Purple-skinned Breeding Clones. Yield and quality results for the 2015

advanced breeding red- and purple-skinned line trials at Presque Isle are presented in Maine Tables 26 and 27.

AF5414-1 and NDAF102573-2 had the best yields of the test clones. Tubers of AF4659-12, AF5375-3, and

NDAF102571B-5 were very small. AF4659-12, AF4831-2, AF5245-1, AF5275-1, AF5412-3, NDAF102571B-5 ,

and NDAF102573-2 had the best tuber appearance scores for the red and/or speciality markets. Four clones had

>15% external defects incidence: Adirondack Blue, AF5412-1, AF5412-3, and NDAF102568C-2. Hollow heart

incidence was low in this experiment with only AF5245-1 having greater than 5% incidence.

Washed Tuber Appearance Scores for Advanced Red- and Purple-skinned Breeding Clones. Of the 2014

growing season lines tested, white-skinned clones with a high percentage of attractive tubers were: AF4138-8, and

B2833-16 (Maine Table 28). Of the reds and purples tested, Chieftain, AF4659-12, AF4831-3, AF4985-1, AF5245-

1, and B2676-2 had the best washed tuber appearance ratings from storage.

Sensory Quality Evaluation of Advanced Breeding Lines from the 2014 Growing Season. Baked and

boiled sensory evaluation results from the 2014 growing season are presented in Maine Table 29. AF4013-3,

AF4138-8, AF4124-7, AF4172-2, AF4296-3, AF4320-17, B2676-2, MSQ086-3, NY148, and NY150 had

acceptable baked scores when compared to standard varieties. BNC244-10 was the only test clone that was rated

poorer than the standard varieties.

Dark Red Norland, Katahdin, Superior, AF4013-3, AF4138-8, AF4296-3, MSQ086-3, and NY150 had

good boiled quality scores. AF4124-7 and AF4172-2 performed poorer than desirable in the boiled quality test due

to after-cooking darkening. Atlantic, Russet Burbank, Yukon Gold, AF4124-7, AF4172-2, AF4320-17, B2676-2

and NY148 had poorer than desirable boiled quality scores due to sloughing. BNC244-10 was difficult to judged

because of its mottled, purple color.

Promising Selections in the 2015 NE1231 Regional Variety Trials and Advanced Selection Trials.

Selections that performed particularly well in the 2015 Maine regional and advanced trials were:

Chipping

4

Page 7: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Sebec Tested as AF0338-17. It has yields similar to Atlantic in the S.E. with very little internal heat

necrosis or hollow heart, not a storage chipper, but chips very well from the field in the

Southeastern U.S.

AF4157-6 Early maturing with moderate to good yields, excellent chip color, good gravity, bruise

resistance. It may work well from the field in the South and from storage in the north. Small

tuber size and scab susceptibility are weaknesses. Good yields for an early, but has been

inconsistent.

AF4648-2 Mid-season maturity with good yields, chip color, gravity, and bruise resistance. This clone is

common scab, PVY, and GN resistant. Susceptibility to greening was a problem in 2015 trials.

NY154 Also known as NYH15-17, this clone is late maturing with good yields, moderate gravity, and

good chip color. Tuber appearance is fair to good, but it can have some hollow heart. It has good

scab resistance. Tuber shape sometimes runs more toward oblong than is desirable.

Other Promising chipping candidates that will be tested again in 2016: AF5040-8 (high yields, good

gravity and chip color, outstanding in 2014 and 2015 national trials).

Fresh market whites

Sebec Tested as AF0338-17. Widely adapted, medium to medium late, round to oblong tubers, slight

net, fair to good appearance, low external defects, moderately susceptible to scab.

AF4138-8 Bright appearance with slightly netted, round to oblong tubers, excellent boiled quality, early to

mid-season maturity, moderate scab resistance, and higher yields than Superior. Size profile can

be smaller than Superior.

AF4648-2 Smooth skin, bright appearance, round to oblong tubers, possible chipping and fresh market use,

mid-season, very good common scab resistance plus PVY and GN resistance. Susceptibility to

greening was a problem in 2015 trials.

Other Promising fresh market whites that will be tested again in 2016: AF4552-5 (early maturity,

moderate scab resistance, good yields, netted skin); AF5280-5 (medium early, bright, moderate

scab resistance, large tubers); AF5426-3 (mid-season, bright, moderate scab resistance); AF5450-

7 (late maturity, bright, good scab resistance).

Russets or Long Whites

Caribou Russet Tested as AF3362-1. A medium-late maturing, dual-purpose russet with fair to good appearance,

long to oblong tubers, low external defects, moderate specific gravity, and good fry color. It has

high yields, moderate to large tuber size, and good internal quality (except for internal heat

necrosis in southern areas). It has moderate scab resistance and is resistant to golden nematode

and bruise.

Easton Tested as AF3001-6, this clone produces long, netted to lightly russeted tubers that have excellent

fry color. It has very high yields, good tuber size, medium to high gravity, and good resistance to

verticillium. Susceptibility to tuber late blight and rot have been weaknesses.

Teton Russet A long russet with moderate to high yields, good appearance, and good processing potential. It

has moderate scab and fuarium resistance, but is reportedly susceptible to shatter bruise and

softrot. Yields have been inconsistent in our trials. Fry quality has been good.

AF4296-3 A late maturing, russet with good fry quality, fair tuber appearance, and high yields. Specific

gravity is moderate (average of 1.079 in ME trials) and fry color from storage has been good. It

has been an outstanding performer in the national fry processing trials (NFPT). It is moderately

susceptible to scab, but has moderate verticillium resistance and good bruise resistance.

Other Promising russet and long-white candidates that will be tested again in 2016: AF4124-7 (russet,

processing, large tubers, possible dual purpose); AF4172-2 (russet, processing, smaller tuber size

profile, bruise resistant, possible dual purpose); AF4872-2 (russet, good yields and excellent

processing quality); AF4953-6 (russet, good yields, possible dual-purpose); and many more

coming; AF5071-2 (russet, good yields and fry quality, processing); AF5091-8 (russet, good

yields, possible fry processing); AF5164-19 (russet, good yields, possible dual purpose

processing); AF5179-4 (russet, good yields, possible fry processing); AF5312-1 (russet, good

yields and scab resistant, fresh market); AF5406-10 (russet, good yields and fry color,

processing); AF5407-13 (russet, good yields and fry color, possible dual use); AF5464-4 (russet,

5

Page 8: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

good yields, fresh market); WAF10073-3Rus (russet, good yields and scab resistance, possible

fry processing).

Reds and Specialty

NY150 Very small, bright “creamer-type” white-skinned potatoes. PVY, scab (moderate resistance), and

GN resistance.

AF4659-12 A yellow-fleshed “pinto-type” specialty variety with a interesting red and yellow skin pattern. It

produces small, fingerling-type tubers that are excellent roasted, boiled, or fried.

AF4985-1 Bright red skin with a smooth, attractive skin finish, white flesh, good cooking quality, medium

to medium-late vine maturity. Yields are often good, but have been inconsistent due to external

tuber defects (primarily greening and growth cracks).

Other Promising red and specialty candidates that will be tested again in 2016: AF4831-2 (red, white

flesh, scab resistance); AF5215-2 (yellow flesh, pink eyes, small tubers, scab susceptible);

AF5245-1 (purple, white flesh, scab resistant); AF5412-3 (purple flesh, some late blight

resistance); AF5414-1 (reddish flesh, scab resistance, some late blight resistance); BNC244-10

(purple and yellow skin, mottled purple flesh), interesting appearance, but mixed reviews on

mottled, light purple flesh; NDAF102573-2 (red, white flesh).

6

Page 9: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Maine Table 1. Trial sites and management practices for the 2015 potato variety trials.

Site information Aroostook Central Northern

and/or Mgt. Research Maine Aroostook

Practices Farm County

Location: Presque Exeter St.

Isle Agatha

Grower Cooperator: n/a Crane Farms LaBrie Farms

Soil Test Results:

pH 5.7 6.6 5.4

P (lbs/A) 23.1 MH 32.1 H 25.0 MH

K “ 328(6.0%, MH) 540(8.7%, VH) 370 (4.8%, MH)

Mg “ 267(15.8%, H) 337(17.5%, H) 249(10.4%, MH)

Ca “ 1974(60.5%, MHL) 2509(73.9%, H) 2117(52.4%, M)

CEC meq/100g 7.0 7.9 9.9

OM % 3.4 3.8 5.1

Previous Crop: timothy/clover corn oats w/clover

Fall Tillage: moldboard plow disk moldboard plow

Spring Tillage: disk & harrow chisel plow soil-conditioner

Planting Date: May 15, 20, 21 May 14 May 29

At-planting Insectic.: imidacloprid imidacloprid imidacloprid

at labeled rate and Vydate CLV at labeled rate

at labeled rate

At-plant Fertilization: 168-168-168 170-130-200 168-168-168

Other Fertilization: none none none

Herbicide Program: 0.375 lbs/A metribuzin 1.75 pt/A Linex,PE 0.375 lbs/A metrib., PE

plus

Parazone

1.3 pt/A, PE

Irrigation: No Yes No

Vine Desiccation: Sept. 3 (E, reds) Aug. 24 Sept. 15

(initial applic.) Sept. 3 (M)

Sept. 11 (Russets)

Harvest: Sept. 21 (E/ME) Sept. 17 Oct. 8

Sept. 21 (meds.)

Sept. 23 (advanced reds)

Sept. 28 (russets)

7

Page 10: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Maine Table 2. 2015 Rainfall Summary.

Month Rainfall by Location and Month (inches) 1

Presque St.

Isle Exeter Agatha1 2

May 3.01 3.05 2.50

June 3.37 5.13 4.76

July 2.39 1.16(2.40) 3.20

August 3.52 2.63(0.60) 2.85

Sept. 4.10 6.89(0.00) 3.59

Total 16.39 18.86(3.00) 16.90

Total (June 1 to August 31) 9.28 8.92(3.00) 10.81

The Exeter site had supplemental irrigation available. The amount of supplemental irrigation applied appears in1

parentheses.

The Frenchville, ME NOAA weather data was used for the St. Agatha site, since no data were available from the2

research site.

8

Page 11: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

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9

Page 12: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

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Ta

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4.

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e ch

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as D

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r D

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% o

f su

rfac

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fect

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e 1

00

% o

f su

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fect

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cen

tag

e o

f tu

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s w

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thu

mb

nai

l cr

ack

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ort

ed

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S=

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der

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R=

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ite;

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ed w

her

e h

igh

er n

um

ber

in

dic

ates

bri

gh

ter

yel

low

5 colo

r.

10

Page 13: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

5.

Yie

ld, m

ark

etab

le y

ield

, p

erce

nta

ge

of

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ld b

y g

rad

e si

ze d

istr

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tio

n,

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sp

ecif

ic g

rav

ity

fo

r 1

5 e

arly

, med

ium

an

d l

ate-

mat

uri

ng

var

ieti

es g

row

n

at P

resq

ue

Isle

, M

ain

e -

20

15

. (N

E1

23

1 R

egio

nal

Po

tato

Var

iety

Tri

als)

____

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v.

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ium

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4

0

1.0

93

Kat

ahd

in

3

08

2

28

85

20

1

93

(

8)

J

un

e 1

7

3

11

2

1

49

1

4

1

9

6

85

6

3

1.0

73

Ken

neb

ec

3

08

1

96

73

17

4

96

(

8)

J

un

e 1

5

3

11

2

5

51

9

1

9

6

85

6

0

1.0

77

Seb

ec

27

7

24

6

9

1

2

03

9

0 (

8

)

Ju

ne

15

4

1

7

23

4

3

12

1

95

7

8

55

1

.08

1

Sn

ow

den

27

3

23

3

8

7

1

81

8

7 (

12

)

Ju

ne

13

5

2

1

26

3

8

9

0

95

7

3

47

1

.08

5

Su

per

ior

2

24

2

03

76

14

1

98

(1

0)

J

un

e

9

4

29

4

2

24

1

0

9

6

67

2

5

1.0

80

Yu

ko

n G

old

3

15

2

84

1

06

24

3

96

(

8)

J

un

e 1

5

4

14

2

8

45

1

0

0

9

6

82

5

5

1.0

85

AF

41

38

-8

2

68

2

32

86

12

6 1

00

(1

0)

J

un

e 1

3

11

4

1

31

1

5

2

0

8

9

47

1

6

1

.07

2

AF

41

57

-6

2

37

2

06

77

11

0 1

00

(1

2)

J

un

e 1

3

10

4

2

34

1

3

1

0

9

0

48

1

4

1

.08

8

AF

44

42

-4

3

01

2

62

97

18

1

98

(1

0)

J

un

e 1

6

7

2

9

37

2

4

2

0

9

3

63

2

6

1

.08

3

AF

46

48

-2

2

55

2

01

75

15

6

96

(

8)

J

un

e 1

5

6

21

3

7

34

2

0

94

7

3

36

1.0

85

AF

49

75

-3

3

08

2

51

93

17

0

98

(1

0)

J

un

e 1

1

8

30

3

5

24

4

0

92

6

2

28

1.0

88

B2

83

3-1

6

2

81

2

15

80

16

0

95

(1

0)

J

un

e 1

3

7

24

3

3

34

3

0

93

6

9

36

1.0

92

NY

14

8

28

1

23

2

8

6

1

76

9

0 (

10

)

Ju

ne

15

5

2

3

28

3

2

11

1

9

4

71

4

3

1

.09

0

NY

15

4

25

9

20

8

7

7

1

64

7

3 (

10

)

Ju

ne

16

6

2

0

30

4

0

3

0

9

4

73

4

4

1

.08

3

W-D

LS

D (

k=

10

0)

7

0

65

4

6

3

7

1

00

.00

4

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___ U

.S.#

1 y

ield

= y

ield

1f

to

4"

excl

ud

ing

ex

tern

al d

efec

ts.

1

Inch

es b

etw

een

see

dp

iece

s n

ote

d w

ith

in p

aren

thes

es.

2

Siz

e cl

asse

s: 1

=1

½ t

o 1f

"; 2

=1f

to

"; 3

=2

¼ t

o 2

½";

4=

to

"; 5

=3

¼ t

o 4

"; 6

=o

ver

4".

3

11

Page 14: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

6.

Pla

nt

size

, m

atu

rity

at

vin

ekil

l, t

ub

er s

hap

e, t

ub

er d

efec

ts,

ho

llo

w h

eart

rat

ing

s, a

nd

ch

ip c

olo

r sc

ore

s fo

r 1

5 e

arly

, m

ediu

m,

and

lat

e-m

atu

rin

g

var

ieti

es g

row

n a

t P

resq

ue

Isle

, M

ain

e -

20

15

. (

NE

12

31

Reg

ion

al P

ota

to V

arie

ty T

rial

s)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Pla

nt

Dat

a

T

ub

er D

ata

Tu

ber

Def

ects

(%

)

Per

cen

t

1

1

Var

iety

S

ize

M

atu

rity

S

kin

nin

g

Fle

shS

kin

A

pp

ear-

Su

n-

Mis

- G

row

th

H

oll

ow

C

hip

7-2

8

8-2

9 @

VK

&

Sh

atte

r

Co

lor

Tex

-

Sh

ape

ance

T

ota

l b

urn

sh

apen

cra

cks

S

cab

R

ot

Hea

rt

Co

lor

52

3

Ind

ex

%C

rck

.tu

re

4

4

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

Med

ium

Tes

t -

10

5 d

ays

A

tlan

tic

(std

)

86

6

.0

2

.42

53

SO

W5

35

7

.5

2

.0

3

.7

0

.5

0

.9 (

1)

0

.4

2.5

69

(1.0

)

K

atah

din

6*

6

6.5

4.0

03

3 S

OW

7 b

rig

ht

3 f

l6

21

.2

9

.2

7

.3

1

.2

2

.8 (

1)

0

.7

0.0

62

(1.3

)

K

enn

ebec

8#

5

6.3

3.8

17

6 S

OW

7 r

s4

fl,

nu

53

3.4

1

3.1

1

5.7

2.5

1.6

(1

)

0.4

0

.06

5(1

.0)

S

ebec

6

H2

5

6.0

2.1

56

2 S

OW

52

5 r

z

6.7

3.3

2.1

1.1

0.1

(1

)

0.0

0

.06

5(1

.0)

S

no

wd

en

6

5

6.3

1.4

83

1 S

OW

5 r

s2

5 d

e

9.4

3.3

5.2

0.3

0.5

(1

)

0.2

10

.06

5(1

.0)

S

up

erio

r

8#

3

3.5

0.3

26

4 S

OW

64

6

5.3

0.5

3.0

0.0

1.4

(1

)

0.4

0

.06

5(1

.0)

Y

uk

on

Go

ld

74

4

.0

1

.53

63

SY

F2

7 y

l3

7 p

e

6.5

0.8

3.5

1.6

0.6

(1

)

0.0

5

.06

5(1

.5)

A

F4

13

8-8

64

4

.3

1

.40

47

SO

W6

bri

gh

t2

6 d

e

2.7

0.4

1.1

0.1

1.1

(1

)

0.0

0

.06

3(1

.0)

A

F4

15

7-6

74

4

.0

1

.40

80

SO

W6

rs

35

3

.9

0

.3

1

.9

0

.4

0

.9 (

1)

0

.4

0.0

68

(1.0

)

A

F4

44

2-4

76

6

.8

0

.94

58

SO

W6

bri

gh

t3

6

6.3

2.6

2.2

0.2

1.3

(1

)

0.0

0

.06

4(1

.0)

A

F4

64

8-2

75

6

.0

2

.62

12

MR

OW

7 b

rig

ht

37

rz

15

.7

7

.8

4

.3

0

.7

2

.8 (

1)

0

.0

0.0

68

(1.0

)

A

F4

97

5-3

7#

6

5.5

1.6

48

2 S

OW

52

5 d

e1

1.1

1.7

7.1

0.8

1.4

(1

)

0.1

0

.06

7(1

.0)

B

28

33

-16

7

5

5.3

1.8

32

4 M

SO

W5

3 n

u5

17

.9

1

.4

9

.5

3

.6

3

.2 (

1)

0

.1

2.5

63

(1.5

)

N

Y1

48

7

7

7.0

3.8

52

7 M

SO

W5

rz

25

de

12

.3

3

.0

6

.3

0

.3

2

.8 (

1)

0

.0

0.0

66

(1.0

)

N

Y1

54

7

7

7.0

3.8

62

9 M

SO

W5

4 n

u5

rz

14

.9

6

.4

7

.1

0

.8

0

.7 (

1)

0

.0

1

0.0

68

(1.0

)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

pr=

som

e p

ear-

shap

ed t

ub

ers;

pch

=p

ink

sk

in p

atch

es;

yl=

yel

low

sk

in c

olo

r; d

e=d

eep

ey

es o

r d

ente

d a

pic

al1

or

stem

en

d;

fl=

flat

tu

ber

s; r

s=ru

sset

sca

b;

rz=

rhiz

oct

on

ia;

nu

=n

on

un

ifo

rm s

kin

; cs

=p

rett

y e

xce

pt

for

scab

pro

ble

m;

le=

enla

rged

len

tice

ls;

cr=

skin

crac

ks.

bd

=b

lack

do

t.

# i

nd

icat

es v

ery

go

od

ear

ly v

igo

r w

hil

e *

* a

nd

*=

sev

ere

or

mo

der

ate

earl

y v

igo

r p

rob

lem

s; H

2=

slig

ht

to m

od

erat

e h

erb

icid

e

inju

ry n

ote

d o

n J

un

e 1

3;

H3

=m

od

erat

e h

erb

icid

e in

jury

; H

4=

mo

der

ate

to s

ever

e h

erb

icid

e in

jury

.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

ten

lar

ge

tub

ers

per

plo

t (4

0 p

er c

lon

e).

2

Ch

ip c

olo

r fr

om

45

an

d 5

0F

--

Ag

tro

n M

35

(h

igh

er v

alu

es i

nd

icat

e li

gh

ter

colo

r):

>6

2 a

ccep

tab

le.

Th

e ch

ipp

ing

dat

e w

as D

ecem

ber

9,

20

15

. W

alle

r D

un

can

3

LS

D (

K=

10

0)

for

chip

co

lor

= 4

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 0

.8.

Ind

ex m

easu

res

com

bin

ed s

kin

nin

g a

nd

sh

atte

r b

ruis

e su

scep

tib

ilit

y m

easu

red

on

Sep

tem

ber

22

, 2

01

5 (

1 d

ay a

fter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es4

wh

ere:

0=

all

tub

ers

hav

e 0

% o

f su

rfac

e af

fect

ed a

nd

9=

all

tub

ers

hav

e 1

00

% o

f su

rfac

e af

fect

ed.

Per

cen

tag

e o

f tu

ber

s w

ith

air

an

d/o

r th

um

bn

ail

crac

ks

is r

epo

rted

(S

=su

scep

tib

le,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

Fle

sh c

olo

r: W

h=

wh

ite;

OW

=o

ff-w

hit

e; Y

F=

yel

low

-fle

shed

wh

ere

hig

her

nu

mb

er i

nd

icat

es b

rig

hte

r y

ello

w c

olo

r.5

12

Page 15: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

7.

Yie

ld,

mar

ket

able

yie

ld,

per

cen

tag

e o

f y

ield

by

gra

de

size

dis

trib

uti

on

, an

d s

pec

ific

gra

vit

y f

or

12

ru

sset

ed/p

roce

ssin

g v

arie

ties

gro

wn

at

Pre

squ

e Is

le,

Mai

ne

- 2

01

5.

(NE

12

31

Reg

ion

al P

ota

to V

arie

ty T

rial

s)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

T

ota

l

US

#1

Yie

ld (

cwt/

A)

% S

tan

d

50

%

S

ize

Dis

trib

uti

on

by

Cla

ss(%

)

13

Yie

ld

>

1f

" %

of

>

(sp

acin

g)

Em

erg

ence

S

ize

Cla

ss

>

>

by

len

gth

S

pec

.2

Var

iety

cw

t/A

std

.

4

oz.

6

-29

Dat

e 1

2

3

4

5

8 o

z 1

2 o

z.

>3

" >

"

Gra

v.

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

Ru

sset

/Pro

cess

ing

Tes

t -

11

9 d

ays

Ru

sset

Bu

rban

k (

std

)

4

14

39

0

10

0

31

21

00

(1

6)

J

un

e 1

1

20

4

3

27

7

4

3

7

1

0

85

76

1

.07

6

Car

ibo

u R

uss

et

3

35

3

31

85

2

90

9

4 (

12

)

Ju

ne

11

1

2

34

3

1 1

5

7

54

23

9

2 8

5

1.0

77

Eas

ton

35

2

34

6

8

9

29

4

98

(1

2)

J

un

e 1

2

15

4

2

32

9

1

4

3

1

1

86

77

1

.07

7

Pal

isad

e R

uss

et

2

79

2

24

57

1

41

8

9 (

12

)

Ju

ne

17

3

8

24

1

3 1

5 1

1

39

26

6

0 4

8

1.0

80

Ru

sset

No

rko

tah

26

0

25

8

6

6

14

5

10

0 (

12

)

Ju

ne

11

4

5

47

8

1

0

8

1

6

4 4

5

1.0

76

Sh

epo

dy

33

8

25

6

6

6

21

1

98

(1

0)

J

un

e 1

1

18

3

9

28

12

3

4

3

1

5

82

68

1

.07

7

Tet

on

Ru

sset

3

15

3

00

77

2

31

9

9 (

14

)

Ju

ne

14

2

3

52

2

2

4

0

25

4

7

9 5

9

1.0

77

AF

41

13

-2

26

5

25

8

6

6

18

2

10

0 (

14

)

Ju

ne

13

3

1

46

1

9

3

0

22

3

6

8 5

6

1.0

76

AF

41

24

-7

36

4

36

2

9

3

26

5

99

(1

0)

J

un

e 1

3

28

5

3

16

4

0

1

9

4

77

58

1

.08

6

AF

41

72

-2

30

0

29

8

7

6

22

4

98

(1

6)

J

un

e 1

4

25

4

9

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U.S

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13

Page 16: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

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rat

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nd

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MS

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od

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ista

nt)

.

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wh

ite;

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F=

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wh

ere

hig

her

nu

mb

er i

nd

icat

es b

rig

hte

r y

ello

w c

olo

r.5

14

Page 17: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

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____

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U.S

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3

15

Page 18: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

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NE

12

31

Reg

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1

Var

iety

S

ize

M

atu

rity

Sk

inn

ing

S

kin

A

pp

ear-

Su

n-

M

is-

Gro

wth

H

oll

ow

C

hip

7

-6

8-2

1

@V

K

& S

hat

ter

Tex

-

Sh

ape

ance

T

ota

l b

urn

sh

apen

cr

ack

s

Sca

b

Ro

tH

eart

Co

lor

23

In

dex

%

Crc

k

ture

44

____

____

____

____

____

____

____

____

____

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____

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____

____

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____

____

____

____

____

____

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____

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____

____

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____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

Cen

tral

ME

Reg

ion

al T

est-

10

2 d

ays

Atl

anti

c (s

td)

85

5.0

2.7

9

90

S5

35

cs

25

.5

2

.1

2

.3

0.6

18

.9(2

) 1

.7

2

.56

1(1

.8)

Kat

ahd

in

56

6.0

3.5

6

12

MR

73

fl

4 c

sp5

7.0

4.3

3.0

0

.4

4

7.6

(4)

1.6

2.5

47

(2.2

)

Ken

neb

ec

76

5.3

3.9

1

2

7 M

S7

5 m

sh3

csp

44

.5

6

.6

8

.7

1.6

23

.6(4

) 3

.9

5

.05

2(2

.5)

Seb

ec (

AF

03

38

-17

)

7

5

5

.3

1

.95

5

0 S

63

61

0.5

2.8

1.7

0

.4

3.6

(1)

2.0

0.0

53

(2.2

)

Sn

ow

den

5

6

6

.0

1

.86

4

8 S

5 d

e3

msh

4 c

sp2

3.3

1.3

7.7

0

.1

1

4.1

(2)

0.0

0.0

65

(1.0

)

Su

per

ior

73

3.0

1.5

82

6 M

S5

45

9

.6

0

.5

1

.5

1.0

4

.4(1

) 2

.3

0

.05

9(2

.2)

Yu

ko

n G

old

74

4.0

1.3

8

50

S7

pe

44

csp

41

.4

4

.4

7

.5

1.2

24

.5(4

) 3

.8

2

.54

5(3

.0)

AF

41

38

-8

64

4.5

2.3

6

23

MS

6 b

rgh

t3

6

6.6

1.9

1.8

0

.0

0.1

(1)

2.8

0.0

49

(2.5

)

AF

41

57

-6

6

4

4

.3

2

.71

4

4 S

73

grc

5 c

s4

1.3

1.0

2.0

6

.9

2

8.5

(1)

2.9

3.3

67

(1.0

)

AF

46

48

-2

75

6.0

3.7

3

15

MR

6 b

rgh

t3

61

1.5

5.1

2.5

2

.1

1.5

(1)

0.4

0.0

65

(2.0

)

AF

49

75

-3

85

5.0

2.5

0

39

S6

de

35

17

.4

0

.7

5

.2

0.1

7

.0(1

) 4

.3

2

.56

7(1

.3)

B2

83

3-1

6

74

4.0

2.9

5

10

MR

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4 c

sp5

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3.6

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0

.9

4

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(4)

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0.0

54

(2.5

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NY

14

8

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6

6

.0

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3 M

R6

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.0

4

.7

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1

.2(1

) 7

.8

3

.86

0(1

.5)

NY

15

4

6

6

6

.3

3

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33

S5

5 m

sh4

22

.2

2

.9

10

.2

0.3

4

.4(2

) 4

.3

5

.06

2(2

.0)

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

mb

r=m

ediu

m b

rig

ht

red

sk

in;

pr=

som

e p

ear-

shap

ed t

ub

ers;

pe=

pin

k e

yes

; p

ch=

pin

k s

kin

pat

ches

;1 y

l=y

ello

w s

kin

co

lor;

de=

dee

p e

yes

; fl

=fl

at t

ub

ers;

rs=

russ

et s

cab

; n

u=

no

nu

nif

orm

sk

in o

r sh

ape;

csp

=sc

ab p

rob

lem

s, s

om

e p

itte

d;

cs=

scab

pro

ble

ms;

le=

enla

rged

len

tice

ls;

de=

dee

p e

yes

or

dee

ply

in

den

ted

ap

ical

or

stem

en

d;

cl=

tub

ers

clin

g t

o s

tolo

ns

. S

cab

sev

erit

y r

atin

g (

1 r

ep o

nly

, p

=p

itte

d):

0=

no

ne;

3=

mo

der

ate;

5=

sev

ere.

# i

nd

icat

es v

ery

go

od

ear

ly v

igo

r w

hil

e *

* a

nd

*=

sev

ere

or

mo

der

ate

earl

y v

igo

r p

rob

lem

s.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

ten

lar

ge

tub

ers

per

plo

t (4

0 t

ub

ers

per

clo

ne)

. 2

Ch

ip c

olo

r fr

om

45

an

d 5

0F

--

Ag

tro

n M

35

(h

igh

er v

alu

es i

nd

icat

e li

gh

ter

colo

r):

>6

2 a

ccep

tab

le.

Th

e ch

ipp

ing

dat

e w

as D

ecem

ber

7,

20

15

. W

alle

r D

un

can

3

LS

D (

K=

10

0)

for

chip

co

lor

= 5

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 0

.6.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Sep

tem

ber

21

, 2

01

5 (

4 d

ays

afte

r h

arv

est)

. D

ata

pre

sen

ted

rep

rese

nt

ind

ices

wh

ere:

0=

all

tub

ers

hav

e 0

% o

f4

surf

ace

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

16

Page 19: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

11

. Y

ield

, m

ark

etab

le y

ield

, p

erce

nta

ge

of

yie

ld b

y g

rad

e si

ze d

istr

ibu

tio

n,

and

sp

ecif

ic g

rav

ity

fo

r 1

8 r

ou

nd

-wh

ite

and

red

-sk

inn

ed v

arie

ties

an

d

NE

12

31

reg

ion

al t

rial

clo

nes

gro

wn

at

St.

Ag

ath

a, M

ain

e -

20

15

. (N

E1

23

1 R

egio

nal

Po

tato

Var

iety

Tri

als)

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

To

tal

U

S#

1 Y

ield

(cw

t/A

) %

Sta

nd

S

ize

Dis

trib

uti

on

by

Cla

ss(%

)

1

3

Yie

ld

>1f

" %

of

>2

¼"

(sp

acin

g)

1f

2

½

Sp

ec.

2

V

arie

ty

cw

t/A

st

d.

7-3

1

2

3

4

5

6

to 4

"

to 4

"

to

4"

Gra

v.

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

St.

Ag

ath

a N

E1

23

1 R

ou

nd

-wh

ites

an

d R

eds

- 1

09

day

s

Ro

un

d-w

hit

es:

Atl

anti

c (s

td)

50

24

37

1

00

39

2

99

(1

0)

2

1

0

21

5

0

16

2

96

8

6

65

1.0

88

Kat

ahd

in

41

4

2

57

59

24

3

83

(

8)

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5

11

4

2

33

8

90

8

5

75

1.0

71

Ken

neb

ec

47

5

1

50

34

13

9

94

(

8)

3

7

16

4

6

23

4

93

8

6

70

1.0

72

Seb

ec

47

3

4

11

94

36

4

99

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1

1

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1

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5

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Sn

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den

38

7

3

42

78

29

0

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2)

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4

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4

4

11

2

95

8

1

55

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ior

4

04

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8

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6

51

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0 9

7

85

5

9

1

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0

Yu

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n G

old

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5

2

62

60

24

1

94

(

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2

7

17

4

8

23

1

96

8

9

72

1.0

79

AF

41

38

-8

36

7

1

72

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13

9

97

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6

1

9

26

4

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8

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7

6

50

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68

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57

-6

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5

2

28

52

14

4

99

(1

2)

8

3

4

37

1

9

1

0

92

5

8

21

1.0

81

AF

44

42

-4

43

2

3

84

88

33

3

98

(1

0)

4

1

3

26

4

7

10

0

96

8

4

57

1.0

70

AF

46

48

-2

39

0

1

36

31

11

7

98

(

8)

4

1

3

26

4

7

10

0

96

8

3

57

1.0

80

AF

49

75

-3

44

3

3

30

76

25

3

1

00

(1

0)

7

2

2

29

3

4

7

1

92

7

0

41

1.0

81

NY

15

4

48

2

3

20

73

27

1

93

(

8)

5

1

4

24

4

4

11

2

93

7

9

55

1.0

79

Red

s:

Ch

ieft

ain

(st

d)

45

5

3

97

1

00

36

1

1

00

(1

0)

2

9

18

5

0

20

1

9

7

88

7

0

1

.06

5

No

rlan

d,

DR

38

8

1

94

54

17

8

9

8 (

10

)

2

9

22

5

3

13

1

9

7

88

6

6

1

.06

4

AF

49

85

-1

42

3

1

91

53

16

0

1

00

(1

0)

7

15

2

5

37

1

5

1

92

7

7

52

1.0

61

BN

C2

44

-10

3

30

26

3

7

3

2

05

9

9 (

10

)

9

2

0

24

3

9

7

0

91

7

1

47

1.0

80

CO

09

81

2-5

R

3

85

25

9

7

2

2

11

9

5 (

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)

6

1

7

21

4

1

14

0

9

4

76

5

6

1

.06

9

Wal

ler

Du

nca

n

L

SD

(k

=1

00

)

55

66

61

4

12

1

00

.00

4__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__ U.S

.#1

yie

ld =

yie

ld 1f

to

4"

excl

ud

ing

ex

tern

al d

efec

ts.

1

Inch

es b

etw

een

see

dp

iece

s n

ote

d w

ith

in p

aren

thes

es.

2

Siz

e cl

asse

s: 1

=1

½ t

o 1f

"; 2

=1f

to

"; 3

=2

¼ t

o 2

½";

4=

to

"; 5

=3

¼ t

o 4

"; 6

=o

ver

4".

3

17

Page 20: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

12

. P

lan

t si

ze,

mat

uri

ty a

t v

inek

ill,

tu

ber

sh

ape,

tu

ber

def

ects

, h

oll

ow

hea

rt r

atin

gs,

an

d c

hip

co

lor

sco

res

for

18

ro

un

d-w

hit

es a

nd

red

-sk

inn

ed

var

ieti

es a

nd

NE

12

31

reg

ion

al t

rial

clo

nes

gro

wn

at

St.

Ag

ath

a, M

ain

e -

20

15

. (N

E1

23

1 R

egio

nal

Po

tato

Var

iety

Tri

als)

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

Pla

nt

Dat

a

T

ub

er D

ata

Tu

ber

Def

ects

(%

)

Per

cen

t

1

1

Var

iety

S

ize

M

atu

rity

S

kin

nin

g

Sk

in

Ap

pea

r-

S

un

- M

is-

Gro

wth

Ho

llo

w

Ch

ip

7

-29

9-3

@V

K

&

Sh

atte

r

Tex

-

Sh

ape

ance

T

ota

l b

urn

sh

apen

cra

cks

Sca

b R

ot

Hea

rt

Co

lor

23

In

dex

%

Crc

k.

tu

re

4

4

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

St.

Ag

ath

a N

E1

23

1 R

ou

nd

-wh

ites

an

d R

eds

- 1

09

day

s

Ro

un

d-w

hit

es:

Atl

anti

c (s

td)

8

66

.32

.00

37

S5

du

ll3

5 d

e

9

.2

3

.1

2

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1

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2

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)

0.0

0

.06

0(2

.2)

Kat

ahd

in

6

6

5.8

3

.35

23

MS

73

fl

5 s

un

b

30

.6

21

.0

4

.9

0

.3

4

.0(2

)

0.5

0

.0--

Ken

neb

ec

9

6

6.3

3

.40

50

S6

grc

,cs

5 m

sh3

su

nb

6

6.1

1

7.6

1

0.1

4.7

3

3.6

(4)

0

.2

0.0

48

(2.2

)

Seb

ec

8

56

.0

1.1

79

9 S

53

6

9

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4

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1

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1

.7

1

.6(2

)

0.2

0

.06

0(2

.0)

Sn

ow

den

7

66

.8

1.8

86

7 S

5 d

ull

34

de

6.9

2.9

4.0

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(1)

0

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60

(1.2

)

Su

per

ior

8

4

4.0

1

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82

S5

du

ll4

nu

5

6

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1

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4

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0

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0

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0

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Yu

ko

n G

old

9

5

5.8

1

.61

56

S6

cs

4 m

sh5

pe

3

8.4

6.7

4.2

0.8

2

6.6

(2)

0

.2

0.0

--

AF

41

38

-8

7

5

5.0

2

.33

52

S6

35

cs

5

0.2

2.3

2.0

0.1

4

5.4

(2)

0

.4

0.0

--

AF

41

57

-6

7

4

4.5

2

.48

93

S6

grc

35

cs

1

2.8

1.4

0.8

4.2

6.5

(2)

0

.0

0.0

65

(1.0

)

AF

44

42

-4

7

7

7.0

1.1

64

5 S

64

fl

6 r

s

7

.8

6

.1

1

.4

0

.1

0

.1(1

)

0.1

0

.05

7(1

.8)

AF

46

48

-2

7

6

6.5

3

.14

9

R7

cs,

fl

4 m

sh4

su

nb

6

3.8

1

0.3

3.3

2.0

4

8.0

(3)

0

.1

0.0

60

(2.0

)

AF

49

75

-3

8

7

5

.8

1.4

56

9 S

6 c

s3

5 d

e

19

.6

1

.3

3

.3

0

.6

14

.1(2

)

0.2

0

.06

3(1

.0)

NY

15

4

8

77

.0

2.3

55

0 S

6 c

s5

msh

3 s

un

b

29

.2

10

.5

6

.7

1

.0

10

.7(1

)

0.3

0

.05

8(2

.5)

Red

s:

Ch

ieft

ain

(st

d)

9

6

6.0

2

.24

52

S6

3 f

l6

mr

1

0.0

2.2

2.0

3.6

2.1

(1)

0

.1

0

.0--

No

rlan

d,

DR

8

56

.3

3.0

06

8 S

6 g

rc,c

s5

msh

3 m

br

4

7.5

4.5

6.7

3.6

3

1.5

(3)

1

.2

0

.0--

AF

49

85

-1

8

5

5.5

3

.50

11

MR

7 g

rc,c

s3

su

nb

4 m

br

4

9.8

1

0.7

3.5

7.3

2

6.1

(3)

2

.3

12

.5--

BN

C2

44

-10

8

6

5.8

2

.40

13

MR

64

msh

4 p

ur/

wh

1

3.5

0.1

1

1.5

0.0

1.3

(1)

0

.6

0

.0--

CO

09

81

2-5

R

8

66

.3

3.2

12

5 M

S6

grc

3 s

un

b5

mr

2

8.1

7.7

2.2

1

6.2

1.1

(1)

1

.0

0

.0--

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

pk

e=p

ink

at

eyes

, p

pk

=p

ale

pin

k s

kin

; p

k=

pin

k t

o p

ale

red

sk

in;

pr=

pal

e re

d;

lmr=

lig

ht

med

ium

red

sk

in;

1 mr=

med

ium

-red

sk

in;

br=

bri

gh

t r

ed s

kin

; d

r=d

ark

red

sk

in;

ptd

=p

oin

ted

tu

ber

sh

ape;

pr=

som

e p

ear-

shap

ed t

ub

ers;

pch

=p

ink

sk

in p

atch

es;

yl=

yel

low

sk

in c

olo

r;

de=

dee

p e

yes

or

den

ted

ap

ical

an

d/o

r st

em e

nd

; fl

=fl

at t

ub

ers;

rs=

russ

et s

cab

; n

u=

no

nu

nif

orm

sk

in o

r sh

ape;

cr=

skin

cra

ckin

g o

r ch

eck

ing

; cs

=p

rett

y e

xce

pt

for

scab

pro

ble

m;

le=

enla

rged

len

tice

ls;

brg

ht=

bri

gh

t ap

pea

ran

ce;

mp

ur=

med

ium

pu

rple

sk

in.

#

in

dic

ates

ver

y g

oo

d e

arly

vig

or

wh

ile

**

an

d *

=se

ver

e o

r m

od

erat

e

earl

y v

igo

r p

rob

lem

s;

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

10

lar

ge

tub

ers

cut

per

plo

t, w

hen

av

aila

ble

(4

0 t

ub

ers

per

var

iety

).

2

Ch

ip c

olo

r fr

om

45

an

d 5

0F

--

Ag

tro

n M

35

(h

igh

er v

alu

es i

nd

icat

e li

gh

ter

colo

r):

>6

2 a

ccep

tab

le.

Th

e ch

ipp

ing

dat

e w

as D

ecem

ber

14

, 2

01

5.

Wal

ler

Du

nca

n3

LS

D (

K=

10

0)

for

chip

co

lor

= 4

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 1

.2.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Oct

ob

er 1

3,

20

15

(5

day

s af

ter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 0

=al

l tu

ber

s h

ave

0%

of

surf

ace

4

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

18

Page 21: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

13

. Y

ield

, m

ark

etab

le y

ield

, p

erce

nta

ge

of

yie

ld b

y g

rad

e si

ze d

istr

ibu

tio

n,

and

sp

ecif

ic g

rav

ity

fo

r 1

2 r

uss

et/p

roce

ssin

g (

lon

g-t

ub

er-t

yp

e) v

arie

ties

and

NE

12

31

reg

ion

al t

rial

clo

nes

gro

wn

at

St.

Ag

ath

a, M

ain

e -

20

15

. (

NE

12

31

Reg

ion

al P

ota

to V

arie

ty T

rial

s)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

T

ota

l

US

#1

Yie

ld (

cwt/

A)

% S

tan

d

S

ize

Dis

trib

uti

on

by

Cla

ss(%

)

13

Yie

ld

>

1f

" %

of

>

(sp

acin

g)

Siz

e C

lass

>

>

b

y l

eng

th

Sp

ec.

2

Var

iety

cw

t/A

std

.

4

oz.

7-3

1

2

3

4

5

8 o

z 1

2 o

z.

>3

" >

"

Gra

v.

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

__

St.

Ag

ath

a N

E1

23

1 R

uss

et/p

roce

ssin

g T

est-

10

9 d

ays

Ru

sset

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rban

k (

std

) 3

98

36

5

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00

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10

0 (

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)2

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6 1

0

5

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ibo

u R

uss

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50

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51

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4

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7

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1

21

21

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5

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7

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ton

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00

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6

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0

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3

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36

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03

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9 1

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39

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60

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52

9

6

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1

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6

82

6

9

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epo

dy

4

15

2

13

5

8

18

4

98

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0)

14

3

2

23

20

12

5

5

3

1

89

7

6

1.0

72

Tet

on

Ru

sset

40

9

38

1

1

04

3

42

9

7 (

14

) 1

0

35

3

1 1

7

8

55

24

9

1

83

1

.07

1

AF

41

13

-2

4

19

3

84

10

5

32

9

99

(1

4)

14

2

9

28

17

12

5

7

2

9

89

8

0

1.0

68

AF

41

24

-7

4

36

4

24

11

6

36

2

98

(1

0)

15

3

5

31

11

8

5

0

1

9

91

8

0

1.0

79

AF

41

72

-2

3

92

3

80

10

4

33

3

95

(1

6)

13

3

7

25

17

8

5

0

2

5

93

8

3

1.0

76

AF

49

53

-6

4

31

4

15

11

4

37

2

99

(1

2)

10

3

3

25

20

12

5

7

3

2

86

7

4

1.0

73

ND

80

68

-5R

us

37

3

34

1

93

2

53

9

9 (

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) 2

7

50

1

8

3

1

23

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8

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61

1

.07

9

Wal

ler

Du

nca

n L

SD

(k

=1

00

)

10

7

94

8

81

0

1

2

6

9

0.0

06

__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

U.S

.#1

yie

ld =

yie

ld >

1f

" e

xcl

ud

ing

tu

ber

s w

ith

su

nb

urn

, se

ver

e m

issh

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row

th c

rack

s, s

cab

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d r

ot.

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Inch

es b

etw

een

see

dp

iece

s n

ote

d w

ith

in p

aren

thes

es.

2

Siz

e cl

asse

s: 1

= <

4 o

z; 2

=4

to

8 o

z.;

3=

8 t

o 1

2 o

z.;

4=

12

to

16

oz.

; 5

= >

16

oz.

3

19

Page 22: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

14

. P

lan

t si

ze,

mat

uri

ty a

t v

inek

ill,

tu

ber

sh

ape,

tu

ber

def

ects

, h

oll

ow

hea

rt r

atin

gs,

an

d c

hip

co

lor

sco

res

for

12

ru

sset

/pro

cess

ing

(lo

ng

-tu

ber

-

typ

e) v

arie

ties

an

d c

lon

es g

row

n a

t S

t. A

gat

ha,

Mai

ne

- 2

01

5.

(NE

12

31

Reg

ion

al P

ota

to V

arie

ty T

rial

s)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

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____

____

____

____

____

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____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Pla

nt

Dat

a

T

ub

er D

ata

Tu

ber

Def

ects

(%

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Per

cen

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Var

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M

atu

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kin

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g

S

kin

A

pp

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Co

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St.

Ag

ath

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1 R

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et/p

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day

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k (

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7

7

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nu

7 n

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3

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ibo

u R

uss

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7

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epo

dy

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6

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7

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3

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Tet

on

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6

6

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37

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s

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7

7

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(1

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0.0

51

(2.5

)

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41

24

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8

5

5.8

2

.09

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S4

6 n

u5

2

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2

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5.0

51

(2.8

)

AF

41

72

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7

5

6

.0

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09

0 S

47

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s

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0

.5

0

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0

.5 (

1)

0.0

0

.05

1(2

.2)

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49

53

-6

8

7

7.0

3

.18

73

S3

6 f

l6

rs

4

.1

1

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1.3

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1.2

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30

(3.0

)

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80

68

-5R

us

5

5

4.3

2

.91

54

S4

65

cs

8

.7

0

.7

0.0

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7.7

(3

) 0

.2

0.0

55

(2.0

)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

nr=

no

nu

nif

orm

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sset

ing

; p

td=

po

inte

d t

ub

er s

hap

e; p

r=p

ear-

shap

ed t

ub

ers;

le=

enla

rged

len

tice

ls;

1

stl=

sto

lon

s cl

ing

to

to

ps;

wh

=w

hit

e-sk

inn

ed;

cr=

skin

cra

cks;

pe=

pin

k a

t ey

e; a

nd

rs=

russ

et s

cab

.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

10

lar

ge

tub

ers

cut

per

plo

t w

hen

av

aila

ble

(4

0 t

ub

ers

per

var

iety

).2

Ch

ip c

olo

r fr

om

50

F -

- A

gtr

on

M3

5 (

hig

her

val

ues

in

dic

ate

lig

hte

r co

lor)

: >

62

acc

epta

ble

. T

he

chip

pin

g d

ate

was

Dec

emb

er 1

1,

20

15

. W

alle

r D

un

can

LS

D3

(K=

10

0)

for

chip

co

lor

= 5

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 0

.5.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Oct

ob

er 9

, 2

01

5 (

1 d

ay a

fter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 0

=al

l

tub

ers

hav

e 0

% o

f su

rfac

e4

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

20

Page 23: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

15

. F

ren

ch f

ry c

olo

r a

nd

un

ifo

rmit

y r

atin

gs

for

11

po

tato

clo

nes

an

d v

arie

ties

gro

wn

at

Pre

squ

e Is

le a

nd

St.

Ag

ath

a, M

ain

e d

uri

ng

20

15

(N

E1

23

11

Tri

als)

.

A

roo

sto

ok

Res

earc

h F

arm

, P

resq

ue

Isle

, M

E

St.

Ag

ath

a, M

E

Fry

%

Fry

Un

ifo

rmit

y

F

ry

%

F

ry U

nif

orm

ity

3

3

Co

lor

OO

%

Dk

.C

olo

rO

O

% D

k.

Var

iety

Ind

ex

& O

%V

G%

G

En

ds

Ov

eral

l N

ote

s

Ind

ex

& O

%V

G%

G

En

ds

Ov

eral

l N

ote

s

22

42

24

Ru

sset

Bu

rban

k (

std

) 0

.69

4

31

0

50

50

po

or

vd

e, s

ed1

.18

15

20

98

3

fair

col

Car

ibo

u R

uss

et

0

.24

10

01

9

61

39

fair

sed

0.9

05

21

07

52

5F

-Pse

d

Eas

ton

0

.34

10

0

0

50

50

fair

sed

0

.24

98

25

82

18

F-G

sed

Pal

isad

e R

uss

et

0

.40

8

52

0

90

0

fair

nu

1

.25

20

28

88

8

fair

c

ol,

sl

gr

Ru

sset

No

rko

tah

1.3

8

25

25

7

52

0F

-Pco

l, n

u,

sed

1.7

6

3

57

03

0p

oo

rco

l, s

ed

Sh

epo

dy

0.6

2

80

25

6

02

0fa

irse

d,

nu

, sl

gr

1.0

42

31

87

52

5F

-Pco

l, s

ed

Tet

on

Ru

sset

0

.14

10

03

0

80

20

F-G

sed

0

.86

48

32

98

3

F-G

AF

41

13

-2

0.1

31

00

60

8

51

5F

-Gse

d

1

.11

22

42

90

5

fair

col

AF

41

24

-7

0.5

1

75

10

5

52

5F

-Pse

d,

nu

0.8

83

03

07

82

0F

-Pse

d

AF

41

72

-2

0.1

61

00

70

10

0

0g

oo

d0

.78

50

12

92

5

F-G

AF

49

53

-6

0

.73

6

55

5

95

0

fair

col,

sl

gr

1.3

81

56

89

5

5fa

irco

l

ND

80

68

-5R

us

0.1

01

00

95

10

0

0g

oo

dg

re0

.36

90

45

88

10

F-G

sl g

r

W-D

L

SD

(k

=1

00

) 0

.34

24

56

5

9N

S0

.43

24

26

17

15

Cen

ter

raw

tu

ber

sla

bs

wer

e cu

t fr

om

eac

h o

f te

n t

ub

ers.

T

he

raw

sla

bs

wer

e fr

ied

at

37

5F

fo

r 3

.5 m

inu

tes,

pla

ced

on

a p

aper

s to

wel

, an

d f

ry c

olo

r w

as r

ated

1o

afte

r th

e sl

ices

had

co

ole

d s

lig

htl

y.

All

tu

ber

sam

ple

s w

ere

sto

red

at

50

F,

85

% R

.H.

fro

m h

arv

est

un

til

pro

cess

ing

. F

ryin

g a

nd

ev

alu

atio

n d

ates

wer

e D

ecem

ber

o

14

(P

resq

ue

Isle

) an

d D

ecem

ber

18

(S

t. A

gat

ha)

.

Co

lor

Gra

des

are

fro

m t

he

US

DA

co

lor

stan

dar

ds

char

t #

64

-1,

thir

d e

dit

ion

. A

wei

gh

ted

fry

co

lor

ind

ex w

as c

alcu

late

d w

her

e 0

.1=

all

slic

es w

ere

ver

y l

igh

t,2 U

SD

A c

ateg

ory

OO

an

d 4

.0=

all

slic

es w

ere

ver

y d

ark

, U

SD

A c

ateg

ory

#4

. L

ow

er i

nd

ices

in

dic

ate

lig

hte

r co

lor.

P

erce

nta

ge

of

slic

es r

atin

g U

SD

A c

ateg

ory

0

or

lig

hte

r is

lis

ted

(p

erce

nta

ge

of

40

sli

ces

rate

d).

Fry

sli

ces

wer

e ra

ted

fo

r co

lor

un

ifo

rmit

y.

%V

G =

per

cen

tag

e o

f sl

ices

ou

t o

f 4

0 t

hat

wer

e ra

ted

ver

y u

nif

orm

. %

G=

per

cen

tag

e o

f sl

ices

th

at w

ere

rate

d v

ery

3 un

ifo

rm t

o h

avin

g o

nly

sli

gh

t st

em e

nd

def

ects

. %

Dk

. E

nd

s =

per

cen

tag

e o

f sl

ices

th

at h

ad m

od

erat

e to

sev

ere

stem

-en

d d

efec

ts.

No

tes:

vd

e=v

ery

dar

k e

nd

s; s

ed=

stem

en

d d

efec

ts;

nu

=n

on

-un

ifo

rm c

olo

r, b

lotc

hy

; co

l=d

ark

fry

co

lor;

sl

gr

= s

om

e sl

ices

wit

h s

lig

ht

gra

yin

g;

gre

= g

ray

en

ds.

4

21

Page 24: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

16

. F

ren

ch f

ry c

olo

r an

d t

extu

re o

f se

lect

ed p

ota

to c

lon

es a

nd

var

ieti

es u

nd

er s

imu

late

d p

roce

ssin

g c

on

dit

ion

s.

All

var

ieti

es w

ere

gro

wn

at

St.

1

Ag

ath

a, M

ain

e d

uri

ng

20

14

.

Co

lor

Gra

de

G

ray

nes

sM

eali

nes

s

Co

mm

ents

Ov

eral

l2

34

5

Var

iety

Rat

ing

In

dex

%D

ark

%U

nif

In

dex

In

dex

R

atin

g6

Ru

sset

Bu

rban

k (

std

)

0-2

0.9

4

9

7

5

4

.00

3

.61

Dak

ota

Tra

ilb

laze

r

0

0-1

0.6

9

0

9

8

3

.76

3.6

8U

nif

.=

Pal

isad

e R

uss

et

00

-20

.86

1

1

64

2.5

3

3

.21

Gr,

Irr

.-

Ru

sset

No

rko

tah

0-1

0.9

4

0

9

1

3

.11

2.7

0T

x,

Gr

-

Sh

epo

dy

00

-20

.77

8

70

3.3

3

3

.40

Gr,

Irr

.-

Tet

on

Ru

sset

0

-20

.94

8

68

3.5

6

3

.59

Irr.

-

A0

10

10

1-1

0

-20

.88

0

80

2.4

3

4

.23

Gr

-

AF

30

01

-6

0

0-1

0.3

8

0

9

9

3

.63

3.5

8U

nif

.+

AF

33

62

-1

0

0-2

0.9

4

18

4

4

3

.66

2.8

5T

x,

Irr.

-

AF

41

24

-4

0

0-2

0.6

5

3

7

5

3

.93

3.6

0=

AF

41

24

-7

0

0-2

0.7

1

4

9

4

3

.65

3.7

9U

nif

.=

AF

41

72

-2

0-2

0.8

9

11

7

9

3

.59

3.3

0=

AF

42

96

-3

0

0-1

0.4

4

0

9

0

3

.74

3.4

9U

nif

.+

AF

43

20

-17

00

-20

.66

5

80

3.0

0

3

.59

Gr

-

AF

43

42

-3

0

0-2

0.7

3

5

7

5

3

.45

3.3

1=

AF

45

32

-8

0-3

1.3

3

40

7

1

3

.34

3.0

9G

r, D

k-

Wal

ler

Du

nca

n

LS

D (

k=

10

0)

0.3

6

20

4

90

.57

0.5

5

Tw

o c

ente

r ra

w t

ub

er s

lice

s w

ere

cut

fro

m e

ach

of

ten

tu

ber

s.

Th

e sl

ices

wer

e ri

nse

d i

n c

oo

l w

ater

, b

lan

ched

fo

r 8

min

ute

s at

17

0F

, p

ar-f

ried

at

37

5F

fo

r 8

01

oo

seco

nd

s, a

nd

qu

ick

fro

zen

at

-30

C i

n p

last

ic b

ags.

F

ou

r su

ch r

epli

cati

on

s w

ere

pro

cess

ed i

n F

ebru

ary

20

15

an

d h

eld

at

-15

F u

nti

l ev

alu

atio

n.

Pri

or

too

o

eval

uat

ion

, sa

mp

les

wer

e fi

nis

h-f

ried

at

37

5F

fo

r 1

-3/4

min

ute

s o

n A

pri

l 3

, 2

01

5,

blo

tted

dry

wit

h a

pap

er t

ow

el,

and

co

ole

d f

or

6 m

inu

tes.

P

roce

ssin

g w

aso

do

ne

at t

he

Sch

oo

l o

f F

oo

d a

nd

Ag

ricu

ltu

re,

Un

iver

sity

of

Mai

ne,

Oro

no

, M

E (

We

app

reci

ate

the

hel

p o

f D

r. M

ary

Ell

en C

amir

e an

d h

er s

taff

).

All

tu

ber

sam

ple

s w

ere

sto

red

at

50

F,

85

% R

.H.

fro

m h

arv

est

un

til

pro

cess

ing

. P

erce

nt

dar

k =

th

e p

erce

nta

ge

of

frie

s th

at w

ere

rate

d i

n t

he

2 c

ateg

ory

or

dar

ker

aft

ero

pro

cess

ing

(o

ut

of

80

sli

ces

rep

rese

nti

ng

40

tu

ber

s).

Co

lor

Gra

des

are

fro

m U

SD

A c

olo

r st

and

ard

s ch

art

#6

4-1

, th

ird

ed

itio

n.

Lo

wer

in

dic

es i

nd

icat

e li

gh

ter

colo

r.2

Gra

yn

ess

ind

ices

rep

rese

nt

wei

gh

ted

mea

ns

der

ived

fro

m t

he

foll

ow

ing

ev

alu

atio

n s

cale

: 4

= n

o g

ray

ing

; 3

= s

lig

ht

gra

yin

g;

2 =

mo

der

ate

gra

yin

g;

1 =

in

ten

se3 g

ray

ing

.

Mea

lin

ess

ind

ices

rep

rese

nt

wei

gh

ted

mea

ns

usi

ng

th

e fo

llo

win

g s

cale

: 6

=v

ery

dry

an

d m

ealy

; 5

= d

ry,

mea

ly;

4 =

mo

d.

mea

ly,

sl.

mo

ist;

3 =

sl.

mea

ly,

mo

d.

4 mo

ist;

2 =

so

gg

y,

no

t m

ealy

; 1

= v

ery

so

gg

y,

no

t m

ealy

.

Co

mm

ents

: D

k=

dar

k f

ry c

olo

r; N

u o

r Ir

r =

fre

nch

fri

es w

ere

irre

gu

lar

in c

olo

r; d

ark

blo

tch

es d

etra

cted

fro

m a

pp

eara

nce

of

pro

du

ct;

Be

= D

ark

blo

tch

es o

n e

nd

s5 o

f m

any

fri

es;

Bc

= D

ark

blo

tch

es i

n c

ente

rs o

f m

any

fri

es;

Bl

= g

ener

al b

lotc

hy

ap

pea

ran

ce o

f fr

ies;

Sh

= S

ho

rt f

ries

fro

m s

mal

l an

d/o

r ro

un

d t

ub

ers;

Gr=

gra

y;

Un

if =

mo

re u

nif

orm

in

co

lor

than

sta

nd

ard

s.

Ov

eral

l ra

tin

g:

qu

alit

y r

ated

bet

ter

(+),

no

t d

iffe

ren

t (o

), o

r p

oo

rer

(-)

than

Ru

sset

Bu

rban

k.

6

22

Page 25: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

17

. C

hip

co

lor

fro

m 3

8F

, 4

5F

, an

d 5

0F

sto

rag

e, r

eco

nd

itio

nin

g p

ote

nti

al,

bru

ise

test

sco

res,

day

s to

sp

rou

t fo

rmat

ion

, an

d s

tora

ge

wei

gh

t lo

sses

oo

o

at 3

8F

an

d 5

0F

fo

r 4

1 p

ota

to v

arie

ties

an

d c

lon

es g

row

n a

t P

resq

ue

Isle

, M

ain

e, d

uri

ng

20

14

an

d s

tore

d d

uri

ng

th

e 2

01

4-2

01

5 s

tora

ge

seas

on

.o

o

Bru

ise

Bar

rel

B

ruis

e T

ests

Day

s to

In

dic

. S

tora

ge

Wt.

34

Var

iety

Ch

ip C

olo

r fr

om

Sto

rag

e

Sk

inn

ing

&

%

Sh

at-

Bla

cksp

ot

Sp

rou

t L

eng

th

L

oss

%5

6

50

F

4

5F

38

F

Rec

on

d.

Sh

atte

r In

dex

Cra

cks

ter

c"

½"

38

F5

0F

o1

o1

o1

2o

o

Ear

ly,

Red

- an

d P

urp

le-s

kin

ned

Tri

al:

Ch

ieft

ain

(st

d)

63

----

--

4.3

9

3 R

2

.58

1

.78

1

59

19

4

5.5

15

.6

No

rlan

d,

Dk

. R

ed6

2--

----

1

.31

46

S

2.6

4

1.3

5

17

31

94

4

.91

9.1

r

Su

per

ior

63

----

--

0.5

01

1 M

R 1

.82

1

.70

1

52

18

0

6.2

12

.7

AF

41

38

-86

3--

----

3

.50

14

MR

2.6

8

1.3

2

21

52

38

5

.7

8.8

B2

67

6-2

68

----

--

0.6

74

6 S

2.1

6

2.3

8

15

21

87

5

.31

7.8

B2

83

3-1

66

5--

----

1

.42

7

R 1

.88

1

.82

1

31

15

9

3.5

19

.1s

BN

C2

44

-10

18

pu

r--

----

1

.65

6

R 2

.05

2

.25

1

31

13

8

4.4

13

.8

CO

00

29

1-5

R5

8

5.4

9

6 R

2.8

5

2.4

21

80

22

2

8.1

13

.8

CO

09

80

12

-5R

64

5

.33

24

MS

2.2

6

2.0

51

45

18

7

8.2

12

.8

NY

13

66

4--

----

6

.27

87

S 3

.20

2

.05

1

94

22

2

7.4

12

.0

NY

15

06

2--

----

0

.37

2

R 1

.80

1

.78

1

45

18

7

3.9

8

.2

Wal

ler

Du

nca

n L

SD

3 0

.77

0

.69

Med

ium

Ch

ipp

ing

Tri

al:

Atl

anti

c (s

td)

66

69

27

66

2

.65

38

S 2

.31

2

.42

1

52

19

46

.21

3.9

Sn

ow

den

65

68

34

65

0

.69

12

MR

1.3

0

2.1

8

13

81

80

3.4

20

.5s

AF

03

38

-17

62

64

21

63

0

.94

29

MS

2.6

0

2.1

5

13

81

59

4.6

27

.0s

AF

41

57

-66

67

04

56

6

0.8

65

0 S

2.9

2

1.4

8

19

42

22

4.3

9

.3

BN

C1

82

-56

46

62

46

6

3.4

34

3 S

2.3

8

1.4

2

13

81

45

5.2

28

.28

s

MS

Q0

86

-36

46

94

06

4

4.1

91

6 M

R 1

.81

1

.42

15

92

22

3.7

17

.8

NY

14

8 (

NY

E1

06

-4)

65

69

32

67

2

.14

9

R 2

.78

2

.28

1

59

20

18

.32

2.6

s

NY

H1

5-1

76

47

03

86

4

2.3

72

0 M

S 1

.35

2

.02

15

91

87

4.8

13

.8

Wal

ler

Du

nca

n L

SD

2 3

5 3

1.0

5

0.5

1

23

Page 26: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

17

co

nt.

Bru

ise

Bar

rel

B

ruis

e T

ests

Day

s to

In

dic

. S

tora

ge

Wt.

34

Var

iety

Ch

ip C

olo

r fr

om

Sto

rag

e

Sk

inn

ing

&

%

Sh

at-

Bla

cksp

ot

Sp

rou

t L

eng

th

L

oss

%5

6

50

F

4

5F

38

F

Rec

on

d.

Sh

atte

r In

dex

Cra

cks

ter

c"

½"

38

F5

0F

o1

o1

o1

2o

o

Lat

e T

rial

:

Kat

ahd

in (

std

)6

15

81

66

3

5.7

95

6 S

2.5

6

2.1

8

19

72

18

5.2

7

.7

Ken

neb

ec6

36

82

66

3

6.8

07

6 S

2.6

8

1.4

8

17

62

04

6.3

8

.9

Ro

chd

ale

Go

ld D

ore

e6

2 -

- -

---

1

.45

69

S1

.48

1

.48

1

48

17

64

.2

9.8

Yu

ko

n G

old

61

--

--

--

0.7

45

9 S

2

.79

1

.88

1

83

21

12

.6

5.6

AF

40

13

-36

46

94

36

7

1.1

15

8 S

1

.70

1

.80

1

27

17

67

.11

4.2

AF

46

40

-16

3 -

- -

---

1

.37

22

MS

1.4

2

2.4

01

27

17

63

.71

3.8

Wal

ler

Du

nca

n L

SD

4 6

6 5

0.5

4

0.4

0

Ru

sset

/Pro

cess

ing

Tri

al:

Ru

sset

Bu

rban

k (

std

)6

15

72

05

4

4.4

07

0 S

1.4

8

2.3

5

19

72

18

2.4

5

.4

Dak

ota

Tra

ilb

laze

r6

86

63

06

2

5.7

24

0 S

1.9

0

1.8

0

16

22

04

3.0

8

.5

Pal

isad

e R

uss

et6

56

32

15

8

7.2

14

2 S

1.7

2

2.1

51

97

23

24

.6

9.1

R.

No

rko

tah

53

50

18

54

1

.44

47

S1

.25

1

.58

1

34

17

62

.5

8.4

Sh

epo

dy

66

66

19

62

4

.04

38

S1

.35

1

.25

1

69

19

72

.2

5.3

Tet

on

Ru

sset

69

67

23

59

0

.54

62

S2

.08

1

.52

1

76

20

44

.61

1.2

A0

10

10

1-1

69

66

22

57

6

.18

39

S1

.72

1

.50

1

62

18

33

.3

9.7

AF

30

01

-66

66

62

85

9

7.7

67

2 S

2.5

0

1.9

2

16

91

97

4.8

9

.3

AF

33

62

-16

55

81

85

1

3.9

44

8 S

1.4

8

1.4

8

9

91

48

3.8

r

7.5

AF

41

24

-46

86

42

16

4

0.5

84

2 S

2.0

4

1.6

8

14

11

76

4.5

17

.5

AF

41

24

-75

85

42

05

5

2.8

23

8 S

2.5

5

1.9

2

16

21

83

3.0

10

.3

AF

41

72

-26

66

52

65

6

0.7

6

44

S2

.00

1

.15

1

62

18

34

.01

2.2

AF

42

96

-36

76

42

96

1

6.4

8

3 R

1.3

0

1.8

01

97

22

54

.4

6.9

AF

43

20

-17

66

65

38

62

1

.78

75

S2

.42

1

.78

1

27

14

83

.82

4.4

AF

43

42

-36

66

43

86

2

5.3

13

8 S

1.3

5

1.6

8

17

62

04

5.0

9

.9

AF

45

32

-85

75

52

25

7

2.2

35

4 S

3.0

5

2.2

51

55

17

65

.22

1.5

Wal

ler

Du

nca

n L

SD

5 4

5 6

0.4

0

0.5

5

24

Page 27: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

17

co

nt.

Sto

red

at

38

F,

45

F,

or

50

F,

85

% R

.H.

fro

m h

arv

est

un

til

Feb

ruar

y 9

to

13

, 2

01

5.

Ch

ip c

olo

r sc

ore

s ar

e fr

om

an

Ag

tro

n M

od

el M

-35

Pro

cess

An

aly

zer

1o

oo

(Ag

tro

n,

Inc.

, S

par

ks,

Nev

ada;

cal

ibra

ted

wit

h b

lack

dis

k "

0"

= 0

an

d w

hit

e d

isk

"9

0"

= 9

0).

C

hip

s w

ere

cru

shed

an

d r

epo

rted

val

ues

are

mea

ns

fro

m f

ou

r

rep

lica

te s

amp

les.

E

ach

sam

ple

was

rea

d t

hre

e ti

mes

an

d w

as t

ho

rou

gh

ly m

ixed

bet

wee

n r

ead

ing

s.

Hig

her

nu

mb

ers

ind

icat

e li

gh

ter

chip

co

lors

.

Rec

on

dit

ion

ed s

amp

les

wer

e ta

ken

fro

m 3

8F

an

d p

lace

d a

t 6

5F

fo

r a

3-w

eek

per

iod

th

en w

ere

chip

ped

Feb

ruar

y 2

3 (

med

ium

s, r

uss

et)

or

Mar

ch 3

(la

tes)

,2

oo

20

15

. S

ee A

gtr

on

des

crip

tio

n u

nd

er f

oo

tno

te #

1.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

usi

ng

a b

ruis

e b

arre

l o

n S

epte

mb

er 1

8 (

earl

ies,

red

s),

Sep

tem

ber

18

(m

ediu

ms)

, an

d S

epte

mb

er 2

57

, 2

01

4 (

late

s,3

russ

ets)

. A

pp

rox

imat

ely

10

lb

s o

f tu

ber

s th

at e

xce

eded

1f

” d

iam

eter

wer

e tu

mb

led

in

a d

rum

wit

h t

hre

e st

on

es f

or

1 m

inu

te a

t 1

5 r

pm

. T

ub

ers

wer

e th

en

rate

d f

or

com

bin

ed s

kin

nin

g a

nd

sh

atte

r b

ruis

e.

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 1

=al

l tu

ber

s h

ave

0%

of

surf

ace

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

.

Per

cen

tag

e o

f tu

ber

s w

ith

air

an

d/o

r th

um

bn

ail

crac

ks

is r

epo

rted

(V

S=

ver

y s

usc

epti

ble

; S

=su

scep

tib

le,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt;

R=

resi

stan

t).

Sh

atte

r an

d b

lack

spo

t te

sts

wer

e co

nd

uct

ed u

sin

g t

he

wei

gh

t-d

rop

met

ho

d (

12

" fo

r sh

atte

r an

d 6

" fo

r b

lack

spo

t).

Th

e in

dex

pre

sen

ted

in

dic

ates

th

e se

ver

ity

of

4

bru

isin

g/d

isco

lora

tio

n w

her

e: 1

=n

o t

ub

ers

sho

w d

isco

lora

tio

n a

nd

4=

all

tub

ers

hav

e se

ver

e d

isco

lora

tio

n.

Th

e sh

atte

r b

ruis

e te

st w

as c

on

du

cted

on

Jan

uar

y 5

to 1

5,

20

15

. T

he

bla

cksp

ot

bru

ise

test

was

co

nd

uct

ed o

n J

anu

ary

17

to

23

, 2

01

5.

Tu

ber

s w

ere

sto

red

at

45

F,

85

% R

.H.

Day

s fr

om

vin

ekil

l to

in

dic

ated

sp

rou

t le

ng

th a

re r

epo

rted

. (

**

no

sp

rou

tin

g o

bse

rved

)5

o

Per

cen

tag

e sp

rou

t an

d w

eig

ht

loss

fo

llo

win

g s

tora

ge

fro

m h

arv

est

un

til

Ap

ril

2,

20

15

at

ind

icat

ed t

emp

erat

ure

an

d 8

5%

R.H

. C

od

es “

s” o

r "r

" in

dic

ate

hea

vil

y6

spro

ute

d o

r sa

mp

les

wit

h m

ore

th

an t

wo

sp

oil

ed t

ub

ers,

res

pec

tiv

ely

.

25

Page 28: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

18

. M

arch

ch

ip c

olo

r sc

ore

s fo

r N

E1

23

1 c

lon

es g

row

n i

n c

entr

al M

ain

e (E

xet

er)

du

rin

g 2

01

4 a

nd

ch

ipp

ed d

uri

ng

th

e 2

01

4-2

01

5 s

tora

ge

seas

on

. __

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Var

iety

or

Ag

tro

n M

35

Sco

re b

y C

hip

pin

g D

ate,

an

d S

tora

ge

Tem

per

atu

re1

Bre

edin

g L

ine

Mar

ch 1

3M

arch

12

Mar

ch 1

0

45

F4

5F

rec

on

d.

50

F__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Atl

anti

c(s

td)

58

67

67

Kat

ahd

in4

05

66

6

Ken

neb

ec5

65

76

4

Sn

ow

den

66

66

67

Su

per

ior

49

58

60

Yu

ko

n G

old

42

52

59

AF

03

38

-17

62

65

66

AF

40

13

-36

66

86

8

AF

41

38

-85

65

76

5

AF

41

57

-66

66

96

9

AF

46

40

-16

16

46

4

BN

C1

82

-55

36

56

7

MS

Q0

86

-36

36

66

7

NY

14

8 (

NY

E1

06

-4)

67

67

68

NY

H1

5-1

76

76

86

8

W-D

un

can

LS

D (

k=

10

0)

5

5

3

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___ C

hip

co

lor

sco

res

are

fro

m a

n A

gtr

on

Mo

del

M-3

5 P

roce

ss A

nal

yze

r (A

gtr

on

, In

c.,

Sp

ark

s, N

evad

a; c

alib

rate

d w

ith

bla

ck d

isk

"0

" =

0 a

nd

wh

ite

dis

k "

90

" =

1

90

).

Ch

ips

wer

e cr

ush

ed a

nd

rep

ort

ed v

alu

es a

re m

ean

s fr

om

fo

ur

rep

lica

te s

amp

les.

E

ach

sam

ple

was

rea

d t

hre

e ti

mes

an

d w

as t

ho

rou

gh

ly m

ixed

bet

wee

n

read

ing

s.

Hig

her

nu

mb

ers

ind

icat

e li

gh

ter

chip

co

lors

. R

eco

nd

itio

ned

sam

ple

s w

ere

war

med

to

ro

om

tem

per

atu

re (

65

to

70

F)

and

hel

d a

t ro

om

tem

per

atu

re

for

two

wee

ks.

26

Page 29: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

19

. Y

ield

, m

ark

etab

le y

ield

, p

erce

nta

ge

of

yie

ld b

y g

rad

e si

ze d

istr

ibu

tio

n,

and

sp

ecif

ic g

rav

ity

fo

r 2

0 c

hip

pin

g v

arie

ties

an

d a

dv

ance

d b

reed

ing

clo

nes

gro

wn

at

Ex

eter

, M

ain

e -

20

15

. (

Ad

van

ced

Bre

edin

g L

ine

Var

iety

Tri

al,

Pre

-NE

12

31

)

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

__

___

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

To

tal

U

S#

1 Y

ield

(cw

t/A

) %

Sta

nd

S

ize

Dis

trib

uti

on

by

Cla

ss(%

)

1

3

Yie

ld

>1f

" %

of

>2

¼"

(sp

acin

g)

1f

2

½

Sp

ec.

2

V

arie

ty

cw

t/A

st

d.

6-1

8

1

2

3

4

5

6

to

4"

to

4"

t

o 4

" G

rav

.

__

__

__

__

__

__

__

__

__

__

__

__

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__

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__

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tral

ME

Ad

van

ced

Tes

t- 1

02

day

s

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anti

c (s

td)

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10

0

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10

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52

1.0

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ow

den

4

27

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0 (

12

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6

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0

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ler

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5__

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____

____

____

____

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Fo

ur

rep

lica

tio

ns

per

var

iety

, ex

cep

t w

ere

# a

pp

ears

bef

ore

clo

ne

ID.

# i

nd

icat

es t

wo

rep

lica

te p

lots

per

var

iety

.

U.S

.#1

yie

ld =

yie

ld 1f

to

4"

excl

ud

ing

ex

tern

al d

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ts.

1

Inch

es b

etw

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ith

in p

aren

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es.

2

Siz

e cl

asse

s: 1

=1

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o 1f

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=1f

to

"; 3

=2

¼ t

o 2

½";

4=

to

"; 5

=3

¼ t

o 4

"; 6

=o

ver

4".

3

27

Page 30: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

20

. P

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mat

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ects

, h

oll

ow

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rt r

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an

d c

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Pla

nt

Dat

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%)

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tral

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Ad

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ced

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c (s

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ow

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) 0

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ur

rep

lica

tio

ns

per

var

iety

, ex

cep

t w

ere

# a

pp

ears

bef

ore

clo

ne

ID.

# i

nd

icat

es t

wo

rep

lica

te p

lots

per

var

iety

.

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

# i

nd

icat

es v

ery

go

od

ear

ly v

igo

r w

hil

e *

* a

nd

*=

sev

ere

or

mo

der

ate

earl

y v

igo

r p

rob

lem

s; c

l=st

olo

ns

1 clin

g;

bs=

bla

ck s

curf

; p

r=so

me

pea

r-sh

aped

tu

ber

s; p

ue=

trac

e p

urp

le a

rou

nd

ey

es;

sz=

smal

l; y

l=y

ello

w s

kin

co

lor;

de=

dee

p e

yes

or

den

ted

ap

ical

or

stem

en

d;

fl=

flat

tu

ber

s; r

s=ru

sset

sca

b;

nu

=n

on

un

ifo

rm s

kin

or

shap

e; p

strk

=p

urp

lest

reak

; cs

=sc

ab p

rob

lem

; cs

p=

som

e p

itte

d s

cab

; le

=en

larg

ed l

enti

cels

. S

cab

sev

erit

y

rati

ng

(1

rep

on

ly;

p=

som

e p

itte

d s

cab

): 0

=n

on

e; 3

=m

od

erat

e; 5

=se

ver

e.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

10

lar

ge

tub

ers

cut

per

plo

t.2

Ch

ip c

olo

r fr

om

45

an

d 5

0F

--

Ag

tro

n M

35

(h

igh

er v

alu

es i

nd

icat

e li

gh

ter

colo

r):

>6

2 a

ccep

tab

le.

Th

e ch

ipp

ing

dat

e w

as D

ecem

ber

8,

20

15

. W

alle

r D

un

can

3

LS

D (

K=

10

0)

for

chip

co

lor

= 3

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 0

.6.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Sep

tem

ber

21

, 2

01

5 (

4 d

ays

afte

r h

arv

est)

. D

ata

pre

sen

ted

rep

rese

nt

ind

ices

wh

ere:

0=

all

tub

ers

hav

e 0

% o

f4

surf

ace

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

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ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

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S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

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od

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res

ista

nt,

R=

resi

stan

t).

Fle

sh c

olo

r: W

h=

wh

ite;

OW

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F=

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low

-fle

shed

wh

ere

hig

her

nu

mb

er i

nd

icat

es b

rig

hte

r y

ello

w c

olo

r.5

28

Page 31: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

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ield

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at

St.

Ag

ath

a, M

ain

e -

20

15

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Ad

van

ced

Bre

edin

g L

ine

Var

iety

Tri

al,

Pre

-NE

12

31

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To

tal

U

S#

1 Y

ield

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t/A

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nd

S

ize

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trib

uti

on

by

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ss(%

)

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3

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ld

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" %

of

>2

¼"

(sp

acin

g)

1f

2

½

Sp

ec.

2

V

arie

ty

cw

t/A

st

d.

7-3

1

2

3

4

5

6

to

4"

to

4"

t

o 4

" G

rav

. __

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____

____

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Ag

ath

a A

dv

ance

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ou

nd

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ite

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t -

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9 d

ays

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c (s

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Fo

ur

rep

lica

tio

ns

per

var

iety

, ex

cep

t w

ere

# a

pp

ears

bef

ore

clo

ne

ID.

# i

nd

icat

es t

wo

rep

lica

te p

lots

per

var

iety

.

U.S

.#1

yie

ld =

yie

ld 1f

to

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excl

ud

ing

ex

tern

al d

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ts.

1

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es b

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ote

d w

ith

in p

aren

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es.

2

Siz

e cl

asse

s: 1

=1

½ t

o 1f

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to

"; 3

=2

¼ t

o 2

½";

4=

to

"; 5

=3

¼ t

o 4

"; 6

=o

ver

4".

3

29

Page 32: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

22

. P

lan

t si

ze,

mat

uri

ty a

t v

inek

ill,

tu

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ape,

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ber

def

ects

, h

oll

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hea

rt r

atin

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an

d c

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res

for

20

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hit

e v

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ties

an

d

adv

ance

d b

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ing

clo

nes

gro

wn

at

St.

Ag

ath

a, M

ain

e -

20

15

. (

Ad

van

ced

Bre

edin

g L

ine

Var

iety

Tri

al,

Pre

-NE

12

31

)__

____

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____

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Pla

nt

Dat

a

Tu

ber

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a

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Def

ects

(%

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1

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lesh

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s S

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t

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olo

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nd

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ture

4

4

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St.

Ag

ath

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nd

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t -

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anti

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Fo

ur

rep

lica

tio

ns

per

var

iety

, ex

cep

t w

ere

# a

pp

ears

bef

ore

clo

ne

ID.

# i

nd

icat

es t

wo

rep

lica

te p

lots

per

var

iety

.

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es:

pr=

som

e p

ear-

shap

ed t

ub

ers;

brg

ht=

bri

gh

t; p

kp

tc=

pin

k s

kin

pat

ches

on

ap

ical

en

d;

pu

rey

e=p

urp

le a

t ey

e;1 p

ke=

pin

k e

yes

; y

l=y

ello

w s

kin

co

lor;

pu

rpch

=p

urp

le s

kin

pat

ch a

rou

nd

ap

ical

or

stem

en

d;

de=

dee

p e

yes

or

den

ted

ap

ical

an

d/o

r st

em e

nd

; n

u=

no

nu

nif

orm

sk

in

or

shap

e; s

c=sk

in c

rack

ing

an

d/o

r ch

eck

ing

; fl

=fl

at t

ub

ers;

rs=

russ

et s

cab

; st

=st

olo

ns

adh

ere

to t

ub

ers;

cs=

pre

tty

ex

cep

t fo

r sc

ab p

rob

lem

; le

=en

larg

ed

len

tice

ls;c

sp=

pit

ted

sca

b p

rese

nt;

an

d b

s=b

lack

scu

rf.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

10

lar

ge

tub

ers

cut

per

plo

t w

hen

av

aila

ble

(4

0 t

ub

ers

per

clo

ne

wh

en t

her

e ar

e fo

ur

rep

lica

tio

ns

per

tre

atm

ent)

. 2

Ch

ip c

olo

r fr

om

45

an

d 5

0F

--

Ag

tro

n M

35

(h

igh

er v

alu

es i

nd

icat

e li

gh

ter

colo

r):

>6

2 a

ccep

tab

le.

Th

e ch

ipp

ing

dat

e w

as D

ecem

ber

15

, 2

01

5.

Wal

ler

Du

nca

n3

LS

D (

K=

10

0)

for

chip

co

lor

= 7

. A

ste

m-e

nd

def

ect

sco

re i

s p

rese

nte

d i

n p

aren

thes

is (

1=

go

od

; 2

=fa

ir;

3=

po

or)

, L

SD

(K

=1

00

) fo

r st

em e

nd

= 0

.8.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Oct

ob

er 1

3,

20

15

(5

day

s af

ter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 0

=al

l tu

ber

s h

ave

0%

of

surf

ace

4

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

30

Page 33: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

23

. Y

ield

, m

ark

etab

le y

ield

, p

erce

nta

ge

of

yie

ld b

y g

rad

e si

ze d

istr

ibu

tio

n,

and

sp

ecif

ic g

rav

ity

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Fo

ur

rep

lica

tio

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per

var

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cep

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ere

# a

pp

ears

bef

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clo

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ID.

# i

nd

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wo

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lica

te p

lots

per

var

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U.S

.#1

yie

ld =

yie

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xcl

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tu

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8 t

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= >

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3

31

Page 34: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

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.2

0.0

(0)

0

.0

2.5

36

(2

.8)

AF

53

14

-2

7

5

5

.8

1

.46

92

SO

W2

grc

6 o

bls

4 l

e1

7.2

0.0

0.3

1

6.9

0

.0(0

)

0.1

0

.03

9 (

2.2

)

#A

F5

37

3-5

7

5

5.5

3.1

79

9 S

OW

2 g

rc7

nu

5 r

s1

0.9

0.9

0.0

9.5

0

.0(0

)

0.4

0

.04

9 (

2.0

)

#A

F5

40

6-7

7

6

6.5

3.6

42

9 M

SO

W4

grc

7 n

u5

rs

18

.2

6

.3

0

.0

11

.2

0.0

(0)

0

.7

1

0.0

33

(3

.0)

#A

F5

40

6-1

0

7

6

6

.5

3.0

95

4 S

OW

4 c

n7

nu

4 r

s

6.9

5.2

0.0

1.7

0

.0(0

)

0.0

0

.05

5 (

2.0

)

#A

F5

40

7-1

3

6

7

7

.0

3

.54

85

SW

h3

7 n

u5

0

.3

0

.2

0

.0

0

.0

0.1

(1)

0

.0

0.0

48

(2

.5)

#A

F5

46

4-4

8

7

7.0

5.1

5

8 R

Wh

47

nu

5 r

s1

0.0

6.7

0.2

2.3

0

.0(0

)

0.7

0

.03

6 (

3.0

)

#A

F5

46

9-2

7

5

5.0

2.0

77

9 S

OW

2 g

rc7

fl,

nu

3 c

r3

0.5

1.9

0.2

2

8.1

0

.0(0

)

0.3

0

.04

0 (

3.0

)

#N

DA

F0

92

41

2-3

Ru

s

8

7

7

.0

3

.00

8

SO

W4

7 t

hin

3

msh

15

.7

12

.9

0

.0

0

.0

2.1

(2)

0

.6

0.0

54

(1

.0)

#W

AF

10

03

9-1

Ru

s

8

7

7.5

4.1

3

0 R

OW

47

nu

4 r

s1

2.9

8.2

0.0

3.0

0

.4(1

)

1.4

65

.05

4 (

2.0

)

#W

AF

10

07

3-3

Ru

s

7

4

4.5

3.0

05

8 S

Wh

37

nu

41

0.8

3.1

5.9

1.6

0

.0(0

)

0.1

0

.04

5 (

2.0

)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

Fo

ur

rep

lica

tio

ns

per

var

iety

, ex

cep

t w

ere

# a

pp

ears

bef

ore

clo

ne

ID.

# i

nd

icat

es t

wo

rep

lica

te p

lots

per

var

iety

.

32

Page 35: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

nr=

no

nu

nif

orm

ru

sset

ing

; le

=en

larg

ed l

enti

cels

; cr

=sk

in c

rack

s; p

r=m

any

pea

r-sh

aped

tu

ber

s; w

h=

wh

ite-

1 skin

ned

; p

e=tr

ace

of

pin

k a

t ey

e; p

ure

ye=

trac

e o

f p

urp

le a

t ey

e; w

e= d

ark

ru

sset

w/w

hit

e ey

es;

dk

=d

ark

bro

wn

; b

s=b

lack

scu

rf;

blk

y=

blo

cky

; ch

=sk

in c

hec

kin

g;

and

rs=

russ

et s

cab

.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

10

lar

ge

tub

ers

cut

per

plo

t w

hen

av

aila

ble

(4

0 t

ub

ers

per

clo

ne

wh

en t

her

e ar

e fo

ur

rep

lica

tio

ns

per

var

iety

).2

Ch

ip c

olo

r fr

om

50

F -

- A

gtr

on

M3

5 (

hig

her

val

ues

in

dic

ate

lig

hte

r co

lor)

: >

62

acc

epta

ble

. T

he

chip

pin

g d

ates

wer

e Ja

nu

ary

4,

20

16

. W

alle

r D

un

can

LS

D3

(K=

10

0)

for

chip

co

lor

= 6

.

A s

tem

-en

d d

efec

t sc

ore

is

pre

sen

ted

in

par

enth

esis

(1

=g

oo

d;

2=

fair

; 3

=p

oo

r),

LS

D (

K=

10

0)

for

stem

en

d =

1.0

.

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Oct

ob

er 1

3,

20

15

(5

day

s af

ter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 0

=al

l

tub

ers

hav

e 0

% o

f su

rfac

e4

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

33

Page 36: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

25

. F

ren

ch f

ry c

olo

r a

nd

un

ifo

rmit

y r

atin

gs

for

32

po

tato

clo

nes

an

d v

arie

ties

gro

wn

at

St.

Ag

ath

a, M

ain

e d

uri

ng

20

15

(A

dv

ance

d R

uss

et T

rial

).1

A

dv

ance

d R

use

t T

rial

, S

t. A

gat

ha,

ME

Fry

%

Fry

Un

ifo

rmit

y

3

Co

lor

OO

%

Dk

.

Var

iety

Ind

ex

& O

%V

G%

G

En

ds

Ov

eral

l N

ote

s

2

24

Ru

sset

Bu

rban

k (

std

)

1.0

9

33

0

95

5

F-G

col

Ru

sset

No

rko

tah

1.8

1

32

2

75

25

po

or

col,

sed

Sh

epo

dy

1.0

93

23

0

85

15

fair

col,

sed

AF

41

98

-21

.01

22

75

10

0

0F

-Gco

l

AF

45

32

-90

.66

66

66

10

0

0g

oo

d

AF

46

09

-10

.96

18

30

8

51

0F

-Pco

l, s

ed

AF

46

15

-51

.31

8

45

9

5

5fa

irco

l, s

ed

AF

48

72

-20

.29

95

90

9

8

0V

Gn

ice

AF

49

50

-20

.50

95

85

9

8

0V

Gn

ice

AF

50

57

-13

0.6

96

26

5

98

0

go

od

AF

50

60

-27

0.7

46

26

2

95

0

go

od

AF

50

71

-20

.64

62

45

9

2

5F

-Gse

d

AF

50

72

-40

.54

88

35

9

2

8F

-Gse

d

AF

50

72

-12

0.7

84

05

81

00

0

go

od

AF

50

91

-20

.72

60

60

10

0

0V

G

AF

50

91

-81

.06

28

55

9

7

3F

-Gco

l, s

ed

AF

51

64

-19

0.5

18

33

01

00

0

go

od

sl g

r

AF

51

79

-41

.39

3

55

10

0

0fa

irco

l

AF

52

02

-10

.76

58

44

7

0

0F

-Pn

u,

sl g

r

AF

52

03

-71

.40

8

53

10

0

0fa

irco

l

AF

53

12

-11

.19

12

48

9

0

8F

-Pco

l, s

ed

AF

53

14

-21

.11

22

42

9

7

3F

-Gco

l, s

ed

AF

53

73

-50

.58

85

25

6

53

5F

-Pse

d

AF

54

06

-71

.03

15

30

9

0

5F

-Pco

l, n

u,

sed

AF

54

06

-10

0.4

19

06

01

00

0

VG

nic

e

AF

54

07

-13

0.5

68

52

51

00

0

go

od

AF

54

64

-41

.18

5

5

4

55

5p

oo

rco

l, s

ed

AF

54

69

-20

.93

35

35

10

0

0F

-Gco

l

AA

F8

06

5-2

1.2

11

43

0

95

5

fair

col,

sed

WA

F1

00

39

-1R

us

0.4

79

06

51

00

0

VG

nic

e, h

h

WA

F1

00

73

-3R

us

0.8

53

03

5

65

0

F-P

col,

nu

ND

AF

09

24

12

-3R

us

0.6

08

04

0

90

0

F-G

nu

W-D

L

SD

(k

=1

00

)0

.29

26

37

19

13

Cen

ter

raw

tu

ber

sla

bs

wer

e cu

t fr

om

eac

h o

f te

n t

ub

ers.

T

he

raw

sla

bs

wer

e fr

ied

at

37

5F

fo

r 3

.5 m

inu

tes,

pla

ced

on

a p

aper

s to

wel

, an

d f

ry c

olo

r w

as r

ated

1o

34

Page 37: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

afte

r th

e sl

ices

had

co

ole

d s

lig

htl

y.

All

tu

ber

sam

ple

s w

ere

sto

red

at

50

F,

85

% R

.H.

fro

m h

arv

est

un

til

pro

cess

ing

. F

ryin

g a

nd

ev

alu

atio

ns

wer

e co

nd

uct

ed o

no

Dec

emb

er 2

1.

Co

lor

Gra

des

are

fro

m t

he

US

DA

co

lor

stan

dar

ds

char

t #

64

-1,

thir

d e

dit

ion

. A

wei

gh

ted

fry

co

lor

ind

ex w

as c

alcu

late

d w

her

e 0

.1=

all

slic

es w

ere

ver

y l

igh

t,2 U

SD

A c

ateg

ory

OO

an

d 4

.0=

all

slic

es w

ere

ver

y d

ark

, U

SD

A c

ateg

ory

#4

. L

ow

er i

nd

ices

in

dic

ate

lig

hte

r co

lor.

P

erce

nta

ge

of

slic

es r

atin

g U

SD

A c

ateg

ory

0 o

r

lig

hte

r is

lis

ted

(p

erce

nta

ge

of

40

sli

ces

rate

d).

Fry

sli

ces

wer

e ra

ted

fo

r co

lor

un

ifo

rmit

y.

%V

G =

per

cen

tag

e o

f sl

ices

ou

t o

f 4

0 t

hat

wer

e ra

ted

ver

y u

nif

orm

. %

G=

per

cen

tag

e o

f sl

ices

th

at w

ere

rate

d v

ery

3 un

ifo

rm t

o h

avin

g o

nly

sli

gh

t st

em e

nd

def

ects

. %

Dk

. E

nd

s =

per

cen

tag

e o

f sl

ices

th

at h

ad m

od

erat

e to

sev

ere

stem

-en

d d

efec

ts.

No

tes:

vd

e=v

ery

dar

k e

nd

s; s

ed=

stem

en

d d

efec

ts;

nu

=n

on

-un

ifo

rm c

olo

r, b

lotc

hy

; co

l=d

ark

fry

co

lor;

sl

gr

= s

om

e sl

ices

wit

h s

lig

ht

gra

yin

g;

gre

= g

ray

en

ds,

hh

4 = h

oll

ow

hea

rt d

efec

ts.

35

Page 38: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

26

. Y

ield

, m

ark

etab

le y

ield

, p

erce

nta

ge

of

yie

ld b

y g

rad

e si

ze d

istr

ibu

tio

n,

and

sp

ecif

ic g

rav

ity

fo

r 1

7 r

ed-

and

pu

rple

-sk

inn

ed v

arie

ties

an

d

adv

ance

d b

reed

ing

clo

nes

gro

wn

at

Aro

ost

oo

k R

esea

rch

Far

m,

Pre

squ

e Is

le,

Mai

ne

- 2

01

5.

(A

dv

ance

d B

reed

ing

Lin

e V

arie

ty T

rial

, P

re-N

E1

23

1)

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

To

tal

U

S#

1 Y

ield

(cw

t/A

) %

Sta

nd

50

%

S

ize

Dis

trib

uti

on

by

Cla

ss(%

)

1

3

Yie

ld

>1f

" %

of

>2

¼"

(sp

acin

g)

Em

erg

ence

1f

2

½

Sp

ec.

2

V

arie

ty

cw

t/A

st

d.

6-3

0

D

ate

1

2

3

4

5

6

to 4

"

to 4

"

to

4"

Gra

v.

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

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____

___

Ad

van

ced

Red

Tes

t- 1

05

day

s

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by

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6

8

85

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9

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9

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75

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1

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7

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4

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5

12

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1.0

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12

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1

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5

1

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1

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2

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AF

54

14

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28

2

79

12

5

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25

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0 (

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)

Jun

e 1

3

4

18

3

4

40

3

0

96

7

7

43

1

.07

3

NC

42

1-4

1

96

1

59

7

1

95

9

6 (

10

)

Jun

e 1

3

1

4

35

2

9

23

0

0

86

5

2

23

1

.07

9

ND

AF

10

25

68

C-2

22

6

17

7

79

12

4

10

0 (

10

)

Jun

e 1

5

7

28

3

4

28

4

0

93

6

5

31

1

.06

0

ND

AF

10

25

71

B-5

19

8

15

5

70

5

5

10

0 (

10

)

Jun

e 1

3

1

9

52

2

6

3

0

0

81

2

9

3

1

.08

4

ND

AF

10

25

73

-2

2

68

2

41

10

8

1

75

1

00

(1

0)

Ju

ne

13

6

26

3

4

32

3

0

94

6

9

35

1

.08

0

Wal

ler

Du

nca

n

LS

D (

k=

10

0)

35

30

3

0

4

1

0

10

0.0

05

__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

U.S

.#1

yie

ld =

yie

ld 1f

to

4"

excl

ud

ing

ex

tern

al d

efec

ts.

1

Inch

es b

etw

een

see

dp

iece

s n

ote

d w

ith

in p

aren

thes

es.

2

Siz

e cl

asse

s: 1

=1

½ t

o 1f

"; 2

=1f

to

"; 3

=2

¼ t

o 2

½";

4=

to

"; 5

=3

¼ t

o 4

"; 6

=o

ver

4"

.3

36

Page 39: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

27

.

Pla

nt

size

, m

atu

rity

at

vin

ekil

l, t

ub

er s

hap

e, t

ub

er d

efec

ts,

and

ho

llo

w h

eart

rat

ing

s fo

r 1

7 r

ed-

and

pu

rple

-sk

inn

ed v

arie

ties

an

d a

dv

ance

d

bre

edin

g c

lon

es g

row

n a

t A

roo

sto

ok

Res

earc

h F

arm

, P

resq

ue

Isle

, M

ain

e -

20

15

. (A

dv

ance

d B

reed

ing

Lin

e V

arie

ty T

rial

, P

re-N

E1

23

1)

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Pla

nt

Dat

a

Tu

ber

Dat

a

Tu

ber

Def

ects

(%

)

Per

cen

t

1

1

Var

iety

S

ize

M

atu

rity

Sk

inn

ing

F

lesh

Sk

in

Ap

pea

r-

S

un

- M

is-

Gro

wth

Ho

llo

w

7

-28

8

-29

@V

K

&

Sh

atte

r

C

olo

rT

ex-

S

hap

e

an

ce

To

tal

bu

rn s

hap

en c

rack

s S

cab

Ro

t

H

eart

42

Ind

ex

%C

rck

s.

ture

33

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

Ad

van

ced

Red

Tes

t- 1

05

day

s

Red

Ru

by

(st

d)

7

6

6

.84

.35

41

SW

h6

4 n

u5

mb

r

12

.2

5

.0

6

.3

1

.0

0.0

(0

) 0

.0

0.0

Ad

iro

nd

ack

Blu

e

7

56

.0

1

.26

9

RP

ur

6 d

ull

3 n

u5

md

pu

21

.5

0

.1

21

.4

0

.0

0

.0 (

0)

0.0

0

.0

Ad

iro

nd

ack

Red

5

44

.5

1

.42

26

MS

Pk

7 d

ull

6 n

u4

pm

r

12

.5

3

.0

7

.9

1

.5

0

.0 (

0)

0.0

0

.0

AF

45

50

-2

4

33

.3

1.3

2

4 R

OW

6 b

do

t2

5 m

pu

r

1.3

0.0

1.3

0.0

0.0

(0

) 0

.0

0.0

AF

46

59

-12

87

7.0

1.2

3

0 R

YF

17

rz

4 n

u6

mr/

yl

14

.7

4

.5

8

.9

0

.4

0

.0 (

0)

1.0

0

.0

AF

48

31

-2

7

65

.8

2.8

14

8 S

Wh

7 b

rig

ht

37

mb

r

2

.1

0

.7

0

.9

0

.4

0

.0 (

0)

0.0

0

.0

AF

52

45

-1

7

44

.0

1

.05

16

MR

OW

7 g

rc3

7 m

pu

r

5.4

0.0

2.2

2.8

0.4

(1

) 0

.0

7.5

AF

52

75

-1

5

55

.0

1.7

7

4 R

OW

7 b

do

t2

6 m

br

3.9

0.7

3.2

0.0

0.0

(0

) 0

.1

0.0

AF

52

78

-3

4

33

.8

1

.70

20

MS

OW

6 d

ull

25

mr

5

.6

0

.9

4

.0

0

.0

0

.1 (

1)

0.5

0

.0

AF

53

75

-3

8

55

.0

1

.00

12

MR

Pu

r6

du

ll3

nu

5 m

dp

u

8.8

0.4

6.9

1.4

0.0

(0

) 0

.1

0.0

AF

54

12

-1

7

66

.0

1

.00

20

MS

Pu

r6

du

ll3

nu

4 m

dp

u 2

0.9

0.0

2

0.9

0.0

0.0

(0

) 0

.0

0.0

AF

54

12

-3

7

66

.0

1

.10

19

MR

Pu

r7

3 n

u6

md

pu

20

.6

0

.0

20

.2

0

.0

0

.0 (

0)

0.4

0

.0

AF

54

14

-1

7

66

.3

2

.47

5

RP

aleR

ed6

de

5 n

u5

mr

11

.0

0

.0

11

.0

0

.0

0

.0 (

0)

0.0

0

.0

NC

42

1-4

6

45

.3

1.1

96

2 S

Wh

5 d

ull

25

mr

6

.1

0

.5

5

.2

0

.0

0

.2 (

1)

0.3

0

.0

ND

AF

10

25

68

C-2

74

4.0

1.1

7

6 R

Wh

7 d

e3

nu

5 b

r

15

.6

0

.0

12

.8

2

.1

0

.0 (

0)

0.6

0

.0

ND

AF

10

25

71

B-5

64

4.0

1.3

72

8 M

SW

h6

26

mb

r

3

.4

0

.8

2

.1

0

.4

0

.0 (

0)

0.0

0

.0

ND

AF

10

25

73

-2

7

55

.5

2

.24

55

SW

h6

bri

gh

t2

7 m

br

4.9

0.5

3.2

1.1

0.0

(0

) 0

.0

0.0

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

See

sta

nd

ard

NE

12

31

rat

ing

sy

stem

fo

r k

ey t

o c

od

es;

pp

k=

pal

e p

ink

sk

in;

pk

=p

ink

to

pal

e re

d s

kin

; p

rd=

pal

e re

d s

kin

; lm

r=li

gh

t m

ediu

m r

ed s

kin

; m

r=m

ediu

m-

1

red

sk

in;

mb

r=m

ediu

m t

o b

rig

ht

red

sk

in;

br=

bri

gh

t r

ed s

kin

; d

r=d

ark

red

sk

in;

mp

ur=

med

ium

pu

rple

sk

in;

dp

ur=

dar

k p

urp

le s

kin

; v

dp

ur=

ver

y d

ark

pu

rple

sk

in,

du

ll;

pr=

som

e p

ear-

shap

ed t

ub

ers;

pch

=p

ink

sk

in p

atch

es;

sbd

=sl

igh

t b

lack

do

t; m

bd

=m

od

erat

e b

lack

do

t; b

d!=

sev

ere

bla

ck d

ot;

yl=

yel

low

sk

in c

olo

r; d

e=d

eep

eyes

; rs

=ru

sset

sca

b;

nu

=n

on

un

ifo

rm s

kin

; cs

=p

rett

y e

xce

pt

for

scab

pro

ble

m;

le=

enla

rged

len

tice

ls;

cr=

skin

cra

cks;

st=

sto

lon

s cl

ing

; ss

=si

lver

scu

rf a

nd

/or

oth

er

sim

ilar

dis

colo

rati

on

.

Per

cen

t h

oll

ow

hea

rt i

s b

ased

on

ten

lar

ge

tub

ers

cut

per

plo

t (4

0 l

arg

e tu

ber

s cu

t p

er v

arie

ty w

hen

th

ere

are

fou

r re

pli

cati

on

s p

er v

arie

ty).

2

Sk

inn

ing

an

d s

hat

ter

bru

ise

wer

e m

easu

red

on

Sep

tem

ber

23

, 2

01

5 (

0 d

ay a

fter

har

ves

t).

Dat

a p

rese

nte

d r

epre

sen

t in

dic

es w

her

e: 0

=al

l tu

ber

s h

ave

0%

of

3

surf

ace

affe

cted

an

d 9

=al

l tu

ber

s h

ave

10

0%

of

surf

ace

affe

cted

. P

erce

nta

ge

of

tub

ers

wit

h a

ir a

nd

/or

thu

mb

nai

l cr

ack

s is

rep

ort

ed (

S=

susc

epti

ble

,

MS

=m

od

erat

ely

su

scep

tib

le,

MR

=m

od

erat

ely

res

ista

nt,

R=

resi

stan

t).

Fle

sh c

olo

r: W

h=

wh

ite;

OW

=o

ff-w

hit

e; Y

F=

yel

low

-fle

shed

wh

ere

hig

her

nu

mb

er i

nd

icat

es b

rig

hte

r y

ello

w c

olo

r; P

urM

=p

urp

le w

ith

wh

ite;

Red

M=

red

wit

h4 w

hit

e; P

K=

pin

k;

PK

M=

pin

k w

ith

wh

ite.

37

Page 40: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

28

. W

ash

ed s

kin

co

lor

eval

uat

ion

s fr

om

sto

rag

e fo

r re

d-

and

pu

rple

-sk

inn

ed v

arie

ties

an

d a

dv

ance

d b

reed

ing

clo

nes

gro

wn

at

Aro

ost

oo

k R

esea

rch

Far

m,

Pre

squ

e Is

le,

Mai

ne

- 2

01

4 a

nd

sto

red

du

rin

g t

he

20

14

/20

15

sto

rag

e se

aso

n.

(NE

12

31

Reg

ion

al a

nd

Ad

van

ced

Bre

edin

g L

ine

Var

iety

Tri

als,

Pre

-NE

12

31

)__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

Was

hed

Sk

in C

olo

r1

Var

iety

S

kin

Co

lor

Ind

ex

Per

cen

t

Fle

sh C

olo

r

>F

air

>

Go

od

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

NE

12

31

Reg

ion

al R

ed-

and

Pu

rple

-sk

inn

ed T

est

(20

14

)

Dar

k R

ed N

orl

and

(st

d)

Med

. B

rig

ht

Red

, N

u2

.72

58

1

6O

ff-w

hit

e

Ch

ieft

ain

Pal

e M

ediu

m R

ed3

.57

95

6

2W

hit

e

Su

per

ior

Tan

3.2

0

7

0

51

Off

-wh

ite

AF

41

38

-8

B

uff

3.7

8

9

8

80

Off

-wh

ite

B2

67

6-2

M

ed.

Bri

gh

t R

ed3

.41

96

4

5O

ff-w

hit

e

B2

83

3-1

6

T

an3

.83

99

8

4O

ff-w

hit

e

BN

C2

44

-10

Pu

rple

an

d Y

ello

w3

.14

80

3

4P

urp

le,

mo

ttle

d

CO

00

29

1-5

R

Med

. D

ark

Red

2.7

3

6

6

16

Wh

ite

CO

09

80

12

-5

Med

. D

ark

Red

3.2

3

8

5

38

Wh

ite

NY

13

6

M

ed.

Dar

k R

ed2

.14

18

0

Wh

ite

NY

15

0

W

hit

e2

.96

78

2

0W

hit

e

Wal

ler

Du

nca

n L

SD

(k

=1

00

)

0.4

4

22

28

Ad

van

ced

Red

- an

d P

urp

le-s

kin

ned

Tes

t (2

01

4)

Dar

k R

ed N

orl

and

(st

d)

Med

. B

rig

ht

Red

, N

u1

.00

0

0O

ff-w

hit

e

AF

45

50

-2

Med

ium

Pu

rple

2.2

3

2

4

0

Off

-wh

ite

AF

45

65

-1

Med

. B

rig

ht

Red

2.9

6

9

7

0

Off

-wh

ite

AF

45

93

-1

Med

. B

rig

ht

Red

2.2

1

2

1

0

Off

-wh

ite

AF

46

59

-12

Med

. R

ed w

ith

Yel

low

3.7

0

9

1

83

Yel

low

(Y

F1

)

AF

48

15

-1

Med

. B

rig

ht

Red

2.9

0

9

0

0

Wh

ite

AF

48

31

-2

Bri

gh

t R

ed2

.36

36

0W

hit

e

AF

48

31

-3

Med

ium

Red

3.8

1

10

0

81

Wh

ite

AF

48

45

-3

Med

ium

Red

2.8

6

9

1

0

Wh

ite

AF

49

63

-9

Med

. B

rig

ht

Red

2

.89

89

0O

ff-w

hit

e

AF

49

85

-1

Bri

gh

t R

ed3

.40

83

6

0O

ff-w

hit

e

AF

52

45

-1

Med

ium

Pu

rple

3.9

0

9

9

91

Off

-wh

ite

AF

52

74

-6

Bri

gh

t R

ed2

.99

99

0O

ff-w

hit

e

AF

52

75

-1

Med

. B

rig

ht

Red

2.9

4

9

4

0

Off

-wh

ite

AF

52

78

-3

Bri

gh

t R

ed2

.86

90

0O

ff-w

hit

e

AF

52

95

-1

Med

. B

rig

ht

Red

1.9

5

0

0

Off

-wh

ite

BN

C3

04

-1

Med

ium

Red

2.3

7

3

7

0

Off

-wh

ite

BN

C3

06

-2

Med

ium

Pu

rple

1.9

9

0

0

Off

-wh

ite

BN

C3

14

-5

Pal

e M

ediu

m R

ed2

.28

28

0Y

ello

w (

YF

2)

BN

C3

15

-5

Med

ium

red

2.9

6

9

1

5

Wh

ite

38

Page 41: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

28

.

con

tin

ued

...

...

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

Was

hed

Sk

in C

olo

r1

Var

iety

S

kin

Co

lor

Ind

ex

Per

cen

t

Fle

sh C

olo

r

>F

air

>

Go

od

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

BN

C3

16

-1

Med

ium

Pu

rple

3.0

5

9

9

5

Yel

low

(Y

F1

)

BN

C3

22

-1

Med

ium

Red

1.9

9

3

0

Off

-wh

ite

Wal

ler

Du

nca

n L

SD

(k

=1

00

)

0

.32

28

1

2__

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

Was

hed

ap

pea

ran

ce r

atin

gs

wer

e co

nd

uct

ed o

n F

ebru

ary

17

(N

E1

23

1)

and

Ap

ril

6,

20

15

(ad

van

ced

).

Tu

ber

s w

ere

rate

d f

or

skin

ap

pea

ran

ce u

sin

g t

he

foll

ow

ing

1

scal

e: 1

=v

ery

po

or;

2=

po

or;

3=

fair

; 4

=g

oo

d;

5=

exce

llen

t.

Hig

her

in

dic

es i

nd

icat

e m

ore

att

ract

ive

colo

r.

39

Page 42: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

29

. S

enso

ry e

val

uat

ion

res

ult

s fo

r N

E-1

23

1 a

nd

ad

van

ced

bre

edin

g c

lon

es g

row

n a

t A

roo

sto

ok

Res

earc

h F

arm

, P

resq

ue

Isle

, M

E -

20

14

. __

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

___

Bak

ed T

est

Res

ult

s

B

oil

ed T

est

Res

ult

s

T

ota

l F

ree

An

tio

xid

ants

12

Var

iety

Co

lor

Fla

vo

r

Tex

ture

O

ver

all

G

ray

ing

S

lou

gh

ing

O

ver

all

Ph

eno

lics

OR

AC

33

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

____

_

Re

ds

an

d E

arl

y R

ou

nd

Wh

ite

s

Su

pe

rio

r (s

td)

6.9

6.5

6.8

6.6

2.7

ab

5.0

ab

49

.5 b

55

7.3

Da

rk R

ed

No

rla

nd

(s

td)

6.6

6.6

6.7

6.6

4.4

ab

3.4

b5

0.9

ab

56

4.6

AF

41

38

-86

.46

.96

.96

.81

.5 b

2.6

b=

/=5

7.4

a6

25

.3

B2

67

6-2

6.4

6.2

6.3

6.2

5.0

a7

.5 a

=/-

54

.9a

b5

89

.6

Mid

-Se

as

on

Ro

un

d W

hit

es

Atl

an

tic

(s

td)

7.0

6.3

6.2

b6

.36

.31

2.4

a4

5.3

b4

32

.5 a

MS

Q0

86

-37

.06

.16

.3 b

6.1

4.1

3.5

b=

/+4

4.7

b2

66

.4 b

NY

14

86

.86

.26

.0 b

6.3

4.5

12

.9 a

=/=

30

.3 c

36

0.3

ab

NY

15

06

.56

.67

.1 a

6.7

2.9

4

.3 b

=/+

56

.1 a

45

1.5

a

La

te a

nd

Ye

llo

w F

les

h

Ka

tah

din

(s

td)

7.4

a6

.9 a

6.9

a6

.9 a

4.1

ab

3.6

b4

9.1

bc

63

8.4

Yu

ko

n G

old

(s

td)

6.9

a6

.2 a

b6

.7 a

6.5

a1

.8 b

11

.2 a

=/-

53

.4 a

b7

26

.5

BN

C2

44

-10

4.9

b5

.8 b

6.0

b5

.6 b

7.0

a3

.2 b

=/=

55

.2 a

71

2.0

AF

40

13

-36

.8 a

6.3

ab

6.8

a6

.5 a

1.1

b4

.6 b

=/=

47

.6 c

63

7.6

Ru

ss

ets

Ru

ss

et

Bu

rba

nk

(s

td)

6.6

5.9

b6

.96

.33

.9 c

8.0

ab

56

.1 a

85

5.3

AF

41

24

-77

.06

.8 a

6.8

6.9

7.1

ab

7.9

ab

-/=

42

.0 b

74

8.4

AF

41

72

-26

.66

.7 a

6.8

6.7

8.0

a7

.8 a

b-/

=4

1.5

b5

01

.9

AF

42

96

-36

.96

.6 a

6.9

6.7

4.5

bc

5.1

b=

/=3

8.3

b4

96

.0

AF

43

20

-17

7.0

6.3

ab

6.5

6.5

1.5

c9

.1 a

=/=

38

.3 b

52

0.9

Sim

ilar

-siz

ed p

ota

toes

wer

e b

aked

du

rin

g F

ebru

ary

an

d M

arch

20

15

fo

r 6

0 m

inu

tes

at 4

25

F a

nd

wer

e tu

rned

on

ce a

fter

30

min

ute

s. P

anel

ists

1 wer

e p

rov

ided

wit

h 1

/4 s

ecti

on

s o

f b

aked

tes

t an

d s

tan

dar

d v

arie

ty p

ota

toes

. T

hey

wer

e as

ked

to

rat

e th

e co

lor,

fla

vo

r, t

extu

re,

and

ov

eral

l

qu

alit

y o

f ea

ch u

sin

g a

9-p

oin

t h

edo

nic

sca

le w

her

e 1

=d

isli

ked

ver

y m

uch

an

d 9

=li

ked

ver

y m

uch

. W

ater

was

pro

vid

ed a

nd

pan

elis

ts w

ere

ask

ed t

o r

inse

pal

ate

bef

ore

an

d a

fter

eac

h s

amp

le.

Ev

alu

atio

ns

con

du

cted

co

urt

esy

of

Dr.

Mar

y E

llen

Cam

ire,

Sch

oo

l o

f F

oo

d &

Ag

ricu

ltu

re,

Un

iver

sity

of

Mai

ne,

Oro

no

, M

E.

Mea

ns

wit

hin

a g

rou

p a

nd

co

lum

n w

ith

th

e sa

me

lett

er a

re n

ot

sig

nif

ican

tly

dif

fere

nt

(Tu

key

’s H

SD

p >

0.0

5)

Sim

ilar

-siz

ed p

ota

toes

wer

e p

eele

d a

nd

bo

iled

at

18

0F

fo

r ap

pro

xim

atel

y 2

0 m

inu

tes

or

un

til

coo

ked

. A

pp

rox

imat

ely

six

po

tato

es p

er s

amp

le2 w

ere

use

d.

Pan

elis

ts w

ere

pro

vid

ed w

ith

a p

late

of

bo

iled

tes

t an

d s

tan

dar

d v

arie

ty p

ota

toes

. T

hey

wer

e as

ked

to

vis

ual

ly r

ate

slo

ug

hin

g a

nd

gra

yin

g u

sin

g a

1 t

o 1

5 s

cale

wh

ere:

slo

ug

hin

g 1

= n

o s

lou

gh

ing

an

d 1

5 h

igh

ly s

lou

gh

ed;

gra

yin

g 1

=n

o g

ray

ing

an

d 1

5 e

xtr

emel

y g

ray

.

Ev

alu

atio

ns

con

du

cted

co

urt

esy

of

Dr.

Mar

y E

llen

Cam

ire,

Sch

oo

l o

f F

oo

d &

Ag

ricu

ltu

re,

Un

iver

sity

of

Mai

ne,

Oro

no

, M

E.

O

ver

all

rati

ng

s: -

is p

oo

rer,

= i

s eq

ual

, +

= b

ette

r th

an t

he

stan

dar

d v

arie

ty.

To

tal

free

ph

eno

lics

= m

g c

hlo

rog

enic

aci

d e

qu

ival

ents

per

10

0 g

fw

; O

RA

C =

mg

Tro

lox

eq

uiv

alen

ts p

er 1

00

g f

w.

Mea

ns

wit

hin

a g

rou

p a

nd

3 colu

mn

wit

h t

he

sam

e le

tter

are

no

t si

gn

ific

antl

y d

iffe

ren

t (T

uk

ey’s

HS

D p

> 0

.05

)

40

Page 43: 2015 MAINE POTATO VARIETY TRIALS NE1231 … Potato...standard varieties, Chieftain or Dark Red Norland. AF4985-1 had better tuber appearance than the standards. Atlantic, Sebec (AF0338-17),

Ma

ine

Ta

ble

30

. S

tan

dar

d N

E1

23

1 R

atin

g C

od

es f

or

Pla

nt

and

Tu

ber

Ch

arac

teri

stic

s.

P

lan

t C

har

acte

rist

ics

Rat

ing

Pla

nt

Air

Vin

eP

lan

tM

atu

rity

Co

de

Siz

eP

oll

uti

on

M

atu

rity

A

pp

eara

nce

at

Vin

ekil

l

1V

ery

Sm

all

Dea

dV

ery

Ear

lyV

ery

Po

or

Co

mp

lete

ly D

ead

2+

--E

arly

Po

or

--

3S

mal

lM

od

. D

efo

l.+

+Y

ello

w a

nd

Dy

ing

4+

--M

ediu

m E

arly

----

5M

ediu

mM

od

. In

jury

Med

ium

Fai

rM

od

erat

ely

Mat

ure

6+

--M

ediu

m L

ate

+--

7L

arg

eM

ild

In

jury

+--

Vin

es S

tart

ing

to

Mat

ure

8+

--L

ate

Go

od

--

9V

ery

Lar

ge

No

Sy

mp

tom

sV

ery

Lat

eE

xce

llen

tV

ines

Gre

en a

nd

Vig

oro

us

T

ub

er C

har

acte

rist

ics

Rat

ing

Sk

inS

kin

Tu

ber

Ey

eO

ver

all

Co

de

Co

lor

Tex

ture

Sh

ape

Dep

thA

pp

eara

nce

1P

urp

leP

art.

Ru

sset

Ro

un

dV

ery

Dee

pV

ery

Po

or

2R

edH

eav

y R

uss

etM

ost

ly R

ou

nd

----

3P

ink

Mo

d.

Ru

sset

Ro

un

d t

o O

blo

ng

Dee

pP

oo

r

4D

ark

Bro

wn

Lig

ht

Ru

sset

Mo

stly

Ob

lon

g--

--

5B

row

nN

ette

dO

blo

ng

Inte

rmed

iate

Fai

r

6T

anS

lig

ht

Net

Ob

lon

g t

o L

on

g--

--

7B

uff

Mo

d.

Sm

oo

thM

ost

ly L

on

gS

hal

low

Go

od

8W

hit

eS

mo

oth

Lo

ng

----

9C

ream

Ver

y S

mo

oth

Cy

lin

dri

cal

Ver

y S

hal

low

Ex

cell

ent

41