The Orchid Doctor Articles under the Heading Cymbidium Mosaic Virus

Cymbidium Mosaic Virus Comments
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 0
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 0
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 0
CYMBIDIUM MOSAIC VIRUS: Most Common Virus Disease Cymbidium Alexanderi 'Westonbirt' is infected in all its divisions; small elongated chlorotic streaks appear on the younger leaves; later widen and elongate and become sharply defined some with islands of green; necrosis shows as black streaks usually in the older leaves causing death in many cases; early mottling sometimes lessens later; mildly infected plants produce flowers adequately. B43+, BU52+ 0
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" 0

New Topics

  1. Dean Haas asked question Parentage of RLC Memoria Emma Chen in category General Discussion
  2. John Small asked question Orchid bulb? in category General Discussion
  3. John Small asked question What is this? in category General Discussion
  4. Marilynn Davis asked question Phal. Violacea in category General Discussion
  5. William Gorski asked question Paph. tag Identification in category General Discussion

New Comments

  1. Dean Haas commented on article "Have Local Orchids to Sell or Trade?" by Sys Admin
  2. Sandi Block-Brezner commented on member plant Bsn. Maikai var. Louise by Sandi Block-Brezner
  3. Robert H. Findlay commented on member plant B. nodosa by John Small
  4. Eileen Pryor commented on member plant Den. chrysotoxum by Tom Kuligowski
  5. Gustavo da Silva commented on member plant Max. callichroma by Gustavo da Silva
  6. Peter Goodin commented on topic "What is this?" by John Small
  7. Sharie Heckaman commented on topic "Paph. tag Identification" by William Gorski
  8. Robert H. Findlay commented on topic "Unmatched Oncidium Alliance Orchid" by Colin Campbell
  9. Jim Williams commented on topic "Arranges Elro" by Khanh tran
  10. Carol Holdren commented on topic "sideways images" by Robert H. Findlay