Foster• First pigmented

grapefruit variety in 1907.

• Seedy

• Limb sport of Duncan

• Has lycopene in juice sac and in peel

Thompson or Pink Marsh• First seedless pigmented selection

• Bud mutation of Marsh Seedless

Ruby Red, Red Blush, Henninger• Bud mutation of Thompson 1926 by

Henninger at McAllen, TX.

• Apart from color it is identical to Marsh grapefruit

Ray Ruby• Uncertain origin discovered in 1970 in the

property of R. Ray in Mission, TX.

• Sweeter than Ruby with better internal color.

• Irradiating seed from Hudson by Hensz,

TX.

• Pigmented until the end of the season.

• Slow growing and bush. growth habit

Susceptible to foot rot, herbicide sensitive

Star Ruby

Flame

• Seed collected from Henderson

• Internal pigmentation is as good as Star Ruby

Rio Red

• Originated as a seedling of Ruby Red

• Irradiated and propagated on sour orange root stock

• Released in 1984

Grapefruit varieties

C. indica - Indian wild orange

• Unpalatable loose- skinned fruit.

• Tanaka calls it Metacitrus

• Wild state in northeastern India.

C. tachibana

• Tachibana orange

• Cold hardy, loose skinned fruit

• ‘Shekwasha’ probably hybrid of this species

• Very primitive type citrus native to Japan.

Papeda Subgenus

• Inedible with acrid oil droplets in juice vesicles

• Flowers and fruit small

• Petioles long and broader than Eucitrus

• C. ichangensis and C. latipes

C. ichangensis

• Most hardy evergreen citrus

• Monoembryonic and hybridizes readily with Citrus

• ‘Yuzu’ and ‘Ichang’ lemons are hybrids.

C. latipes

• Cold hardy like C. ichangensis

–Thicker peel and more variable leaves.

C. micrantha

• Small fruits

• Native to Philippines

• Includes ‘Microcarpa’ -

–smallest fruit and flowers in Citrus

C. clebica

• Small thick peeled fruit

• Native to Celebes

• Thin-skinned ‘Southwikii’

C. macroptera

• Leaves 10-12 inches long

• Fruit as large as sweet oranges

• Another species is:

–C. hystrix a very bumpy warty fruit.

The Avocado

• Lauraceae family• Persea americana

–Related to cinnamon, camphor, and sassafras trees

–Cultivars in West Indian and Guatemalan races.

–Thick peel, salt tolerant.

Persea drymifolia

• Mexican race from highlands in Mexico.

• Leaves posses aromatic odor - anise or sassafras.

• Thin fruit peel

• Cold hardy

THE END