The Orchid Doctor Articles under the Heading Color Break

Color Break Comments
COLOR BREAK: Caused by Other Than Virus Some plants produce abnormal flowers with a white or light wedge in a petal and may do so every few years. A66-134; OD71-199 0
COLOR BREAK: From the Jungle Aphid-transmitted virus has been observed in cattleyas imported from tropical America. OIE86Sept-16 0
COLOR BREAK, MILD: Caused by Both Major Virus Infections Chlorotic streaking appears in new leads, disappears in mature leaf; an illusive disease; plants can act as carriers to other plants where symptoms become more readily noticeable. A73-818; N322 0
COLOR BREAK, SEVERE: In Cattleyas Another disastrous disease caused by "severe color break disease"; color is patchy with ugly areas of pigmentation; it sometimes deforms flowers; plant is also affected -- new leads appear with rosy mottling, or leaves show raised ridges and bumps, perhaps are twisted. A73-819; B46; BU57 0
COLOR BREAK, SYMMETRICAL: In Cattleyas Dark pigment outlines sepals and covers all but the median area of the petals; it is a virus. N322 0
COLOR BREAK: Virus Induced in Cattleyas Cymbidium mosaic virus does not cause color-breaking; tobacco mosaic virus orchid strain induces it; illus. of infected flowers; diagrammatic plant with locations of virus. A70-395; BU57; OD71-199; S208 0

New Topics

  1. Sandi Block-Brezner asked question Brassocattleya hybrid? in category General Discussion
  2. Dean Haas asked question Parentage of RLC Memoria Emma Chen in category General Discussion
  3. John Small asked question Orchid bulb? in category General Discussion
  4. John Small asked question What is this? in category General Discussion
  5. Marilynn Davis asked question Phal. Violacea in category General Discussion

New Comments

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