Download Classification of Subtropicals

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.
Star Ruby
• Irradiating seed from Hudson by Hensz,
TX.
• Pigmented until the end of the season.
• Slow growing and bush. growth habit
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