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
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