Biology Reference
In-Depth Information
spindly and unfruitful. Transmission by the
strawberry aphid.
Strawberry Pallidosis Virus
Caused no disease symptoms and is transmitted
only by grafting; dsRNA was found in infected
cells.
Strawberry Yellow Edge
Central leaves dwarfed, with yellow edges.
Strawberry Phyllody Strawb PhF
Phytoplasma
Strawberry Yellows
On strawberry.
A complex caused by mild yellow edge, crinkle,
and mottle viruses. June yellows is a genetic leaf
variegation, not due to a virus.
For control of strawberry viruses buy certified
plants. Nurseries on the Maryland eastern shore
provide 37 varieties virus-free from a foundation
stock of indexed plants.
Strawberry Pseudo Mild Yellow Edge
Carlavirus
Symptomless on infected plants; transmitted by
aphids in semi-persistent manner. Virus related to
Carnation Latent Carlavirus.
Streptanthera Mosaic
Strawberry Severe Crinkle
Mottled foliage. Caused by Bean Yellow Mosaic
Virus.
Due to Strawberry Mottle Virus plus Strawberry
Crinkle Cytorhabdovirus.
Subterranean Clover Red Leaf
Luteovirus
Strawberry Stunt
In the Pacific Northwest. Plants are erect but
short; leaves at first folded, later open, dull with
a papery rattle; leaflets cupped or with margins
turned down; midveins tortuous; petioles short;
fruits small, hard, seedy. Transmission by the
strawberry aphid.
Caused mild yellowing, stunting and
reddening of many plants from Leguminosae
family.
Sugarcane Bacilliform Badnavirus
Strawberry Veinbanding Caulimovirus
Occurs in Florida and Hawaii; serologically
virus
Diffuse banding along veins; leaflets with
epinasty, mild crinkling, wavy margins. Trans-
mission by several aphids, grafting, dodder.
is
related
only
to Banana Streak
Badnavirus.
Strawberry Witches' Broom
Sunflower Mosaic Potyvirus
Leaves are numerous, light in color with spindly
petioles; margins of leaflets are bent down; run-
ners are shortened, plants dwarfed; flower stalks
Known also as Helianthus Mosaic Virus; caused
mild systemic mosaic and mottling, sometimes
necrosis on leaves and stems.
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