Biology Reference
In-Depth Information
are stunted, with central leafstalks shortened,
outer in a horizontal position with rusty necrotic
spots. Transmission is by many species of aphids.
A crinkle leaf strain of this virus causes a yellow
mottle with raised blister areas and crinkling on
celery leaves.
Carrot Thin Leaf Potyvirus
Caused vein clearing and malformation of leaves
(narrowing).
Cassava Common Mosaic Potexvirus
Celery Yellow Dwarf Poleroviridae
Reported from Florida, virus is transmitted by
mechanical inoculation and by grafting.
Occurs on cereal crops in Alaska.
Cauliflower Mosaic Caulimovirus
Celery Yellow Spot Luteovirus
Widespread on crucifers, broccoli, brussels
sprouts, cauliflower, chinese cabbage, collard,
kale, annual stock, and honesty. Clearing of
veins in cauliflower is followed by mild chlorotic
mottling, with veins usually banded by dark
green necrotic flecks. Midribs are curled, leaves
distorted, plants stunted, terminal heads dwarfed.
Stock is rosetted, with shortened internodes.
Transmission is by cabbage,
On celery and parsnip in California. Yellow spots
and stripes, mostly along veins; circular white spots
on petioles; transmission by honeysuckle aphid.
Cherry Albino
On sweet cherry in Oregon. Branches die back in
spring; leaves golden brown with up-rolled mar-
gins; late summer, new growth small and
rosetted; fruit small and white; trees soon killed.
Transmission by tissue union.
false cabbage,
peach, and other aphids.
Celery Calico
Cherry Bark Splitting
On cucumber, crookneck squash, tomato, celery,
and larkspur. In celery there are vein clearing,
puckering, and downward cupping of younger
leaves, green islands in yellows areas of outer
leaves, yellow and green zigzag bands on leaflets.
Basal and middle leaves of delphinium have
orange-amber or lemon-yellow areas, chlorotic
ring and line patterns; younger leaves are normal
green. Transmission is by many species of
aphids - celery, celery-leaf, rusty-banded, cotton,
erigeron-root,
On sour cherry and apricot.
Cherry Black Canker
On sweet cherry, Oregon. Black, rough cankers
on twigs and branches.
foxglove,
greenpeach,
and
Cherry Buckskin
honeysuckle.
Peach Western X-Disease (under Bacterial Dis-
eases, Phytoplasma).
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Celery Mosaic Potyvirus
Cherry Bud Abortion
On celery, celeriac, and carrot in California.
Young leaflets are mottled green and yellow, in
advanced stages narrow, twisted, cupped; plants
On sweet and sour cherry.
