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. Mark Kaczynski asked question Looking for Dendrobium Jac-Hawaii 'Uniwai Pearl' in category General Discussion
  2. Angela Baxter started topic Catt. walkeriana in category Cattleya Alliance
  3. Luis Imatani asked question RLC/ LC Large flowered hybrids in category General Discussion
  4. Bill Overton asked question Phrag. Panther Run in category General Discussion
  5. William Gorski asked question Orchid Species: Vanda falcata h.v. Ryunotsume in category Species

New Comments

  1. Bill Overton commented on topic "Catt. walkeriana" by Angela Baxter
  2. Gonzalo Rotondaro commented on member plant Cattleya (Sophronitis) cerna by Laura Urban
  3. Steven Kirincich commented on member plant Lc. Little Oliver by Steven Kirincich
  4. Robert Rand commented on member plant Alcra. Winter Wonderland 'White Fairy' by Robert Rand
  5. Thuong Do commented on member plant Schom. tibicinis by Edward Zapata
  6. Bill Overton commented on topic "diseases" by Penny Edwards
  7. William Gorski commented on topic "Orchid Species: Vanda falcata h.v. Ryunotsume" by William Gorski
  8. Stefan Neher commented on topic "Stale Data" by Stefan Neher
  9. Susan Fairbairn commented on topic "diseases" by Penny Edwards
  10. Robert H. Findlay commented on topic "seed vs. pollen parent " by Robert H. Findlay