Breeding for cooking quality with drought tolerance in rice by

using Marker Assistant SelectionBy

Heang Dany and Then Rathmuny

Cambodian Agricultural Resea rch and Development Institute

(CARDI)

Background

• 1 2 millions total population with 181035 2km and around

80% of people are located in therrrrr rrrr

• Around40%ofGDP wer e f r omagr i cul t ur e a nnuallyand hal f of t hemwer e f r omr i ce.

• Thetotalofcultivatedareasofriceare2,137,125ha, whichwetseasonis1,845,135haandaround86%of t h isar ea ar e cal l ed r ai nf ed l owl and.

• -- 1986 35Wehavebeenworkalotsince withcollaborationwithCIAP(CambodiaIrriAustraliaProject) andachievedinreleasing ricevar i et i es i n di fferent rice ecosystem for Cambodi

9 5an farmers there are: early, medium for irrigation (photoperiod i

nsensitive), 8 medium, 1 1 late ( 2photoperiod sensitive) and upla

nd r i ce

Background

Background

No. Description Unit 1996 1997 1998 1999 2000 2001

1Rice MT 3,458,000 3,414,918 3,509,871 4,040,900 4,026,092 4,099,016

2Maize MT 64,255 42,423 48,510 95,974 156,972 185,589

3Yellow Maize MT 27,000 15,037 20,141 54,680 121,741 157,652

4Cassava MT 69,656 77,266 66,534 228,512 147,763 142,262

5Sweet Potato MT 38,032 28,922 30,476 32,516 28,178 26,2526Vegetable MT 249,710 250,000 217,258 181,851 195,894 179,741

7Mung Bean MT 13,758 15,312 9,160 15,913 15,100 16,558

8Sugar Cane MT 171,305 187,532 133,053 159,859 164,176 164,469

9Soya Bean MT 28,299 56,342 27,709 35,063 28,111 24,65810Ground Nut MT 6,166 6,952 6,612 9,244 7,490 8,792

11Seasame MT 5,245 6,500 5,087 7,385 9,855 8,949

12Tobacco MT 9,621 10,492 10,144 6,358 7,665 4,299

Statement problems

• Drought is a major problem in Rainfed lowla nd rice in Cambodia that can cause yield lo ss in rice dramatically up to 5 0 % or more

. Since we are covered by 8 6 % of rainfed lowlandso dr ought t ol er ance woul d be a subj ect tobe i mpr oved wi t h good gr ai n qual i t y ofrrrr rr rrrrr

• Peopl e al ways need much qual i t y wi t h go od qual i t y

– Exin2003droughtdamagearound142480habyear l y dr ought i n t he serrrrr r

Objective• To improve grain quality

with tolerance to drought for rice

Selecting Donor and Recipient

• Donor: Phkar Rum Duol: – 1999Release year:– - rrrr: 30 7.– :7.5, : 2.1. /: 3.6– :23.4%– Gelatinization temperature: Low– 81Gel consistency: mm– Aroma (scent): scent/soft texture

Phka Rum Duol

• 3Recipient: CAR 043, drought by DRI: .

– 1995Release year:– - rrrr: 30 7.– r: 6 .4 , : 2 .2 ,

2 9ationL/W: .– :21.3%– Gelatinizationtemperature: Low/i nt er mi dat e– 60Gelconsistency: mm

Selecting Donor and Recipient

Breeding SchemePhka Rum Duol x CAR3

F1 x CAR3

BC1F1 x CAR3

BC2F1

BC2F2

Thanks for your

attention!