Cymbidium Mosaic Virus |
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CYMBIDIUM MOSAIC VIRUS: Characteristics
Very common in cymbidiums, less so in cattleyas and hybrids, and in phalaenopsis, epidendrum and oncidium; certain lines are infected world-wide; symptoms are highly variable; it usually begins in the new shoots and shows as chlorotic patches and flecks; on maturation the shoots become increasingly chlorotic and later necrotic; in the flower parts it shows no symptoms. OD58-149, S208
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CYMBIDIUM MOSAIC VIRUS: Description
Lesions are always elongated, sometimes streak-like, are often whitish for a month or two before turning brown-grey or black and are usually slightly sunken. A82-37; place cutting tools, etc., in the oven at 114 dF to kill CMV. OA81-152
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CYMBIDIUM MOSAIC VIRUS: In Cattleyas
Produces more necrotic symptoms than in cymbidiums; dark brown or black sunken rings or streaks which tend to coalesce darkening the whole leaf; the symptoms generally are more pronounced on the upper surface of the leaf and on the lower leaves of the plants; the virus is in the flower but no virus-induced color-breaking occurs. OD68-149
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CYMBIDIUM MOSAIC VIRUS: Symptoms and Spread
Leaf mosaic, chlorosis, streaks or necrotic spots are visual in nature but in many plants no foliage symptoms appear; the number and size of flowers are reduced; there is no color-breaking in cymbidiums or dendrobiums; there is flower necrosis in cattleyas; 70 percent of 60 hybrid dendrobiums tested in Bangkok have it. AU79-79+ see also Chlorotic streaks; Virus; Virus, cymbidium mosaic "0"
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