COLCHICINE CONVERSION: In the Future

Orchid Doctor Propagation

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin about 6 years ago.

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To provide an available bank of high class breeding clones in cymbidiums; in cattleyas, to convert triploids to hexaploids (poor plants) for back crossing to tetraploids to achieve 5N or pentaploids, the new way. AU79-196
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More The Orchid Doctor Articles under the Heading Colchicine

Colchicine Comments
COLCHICINE: And Cymbidiums Conversion rate to higher ploidy is more common than with other genera; the selection criteria is most important. AU80-49; FR90; OA78-16 0
COLCHICINE: And Dendrobiums Doubling chromosomes in meristem culture; percent of concentrations required; number of days to induce doubling of chromosomes; other data; refer to NH73(2)-12+ 0
COLCHICINE: And Production of Tetraploids High quality tetraploid cymbidiums, many already awarded now exist; probably induced by the judicious use of colchicine; breeding possibilities from them are great. AU75-190+; AU79-145; AU79-195+ 0
COLCHICINE: And Vandas Induction of polyploidy; 0.1% of solution used in test; 29% of plantlets converted to tetraploid. NH73(2)19 0
COLCHICINE: In Cymbidiums A common laboratory mutagen it can be used on sterile plant materials to double the number of chromosomes; the present confusion about conversion analyzed; refer to OR81-171 0
COLCHICINE: Results to Date Results of use for conversion are not consistent or concrete; untreated seedlings give just as good results as treated ones; it is limited to the extent that it can occasionally produce larger flowers at the expense of other factors. AU79-139+; refer to OB1-192 0
COLCHICINE: Used to Change the Ploidy of Clones A problem arises in reconciling the identification of the new chemically treated result with the original clone; some growers designate the new result with "4N", but the new clone may not be tetraploid. OA77-44+; OA77-47+; OA77-82 0
COLCHICINE: What it Is A chemical extracted from the autumn crocus; it inhibits formation of wall matter between two cells giving cells with double normal number of chromosomes. A78-606; comparative experiment reviewed; refer to A63-885+; for other sources on its use on orchids, refer to A59-838 0

New Topics

  1. Ralph Vincent Badenas asked question Orchid Species in the Philippines in category Curiosity
  2. Burt Holstein started topic Error in plant origination in category Cymbidiums
  3. loan le started topic help with Clowesia Grace Dunn Chadd Ford Mericlone in category General Discussion
  4. Jason heeres asked question Mediocalcar decoratum (Candy corn orchid) help in category Orchid Doctor
  5. GIBSON PWASHIKAI asked question How do I get my orchid ID? in category General Discussion

New Comments

  1. Carol Holdren commented on topic "Orchid Species in the Philippines" by Ralph Vincent Badenas
  2. Dennis Andison commented on article "Orchid Wiz - what will we do without you?" by Carol Holdren
  3. loan le commented on topic "help with Clowesia Grace Dunn Chadd Ford Mericlone" by loan le
  4. Carol Holdren commented on topic "Mediocalcar decoratum (Candy corn orchid) help" by Jason heeres
  5. Carol Holdren commented on topic "How do I get my orchid ID?" by GIBSON PWASHIKAI
  6. Arne Schon commented on orchid B. perrinii
  7. Linda Thorne commented on member plant Rlc. Williette Wong 'The Best' by Linda Thorne
  8. Carol Holdren commented on topic "Z. Redvale Jasmyn" by Shaun Bloodworth
  9. Marie H Miller commented on member plant C. aclandiae by Kerrin Samm
  10. Linda C Clark commented on orchid C. Madeleine Knowlton
  11. Heather Williams commented on member plant Phal. equestris '‘996’' by Cara Anderson
  12. Heather Williams commented on orchid Paph. Vintner's Treasure
  13. Heather Williams commented on member plant Bct. Yuan Nan Mini 'Queen Anne' by Linda Thorne
  14. Heather Williams commented on member plant Pths. racemiflora 'Seagrove Golden Fiddles' by Linda Thorne
  15. Carol Holdren commented on topic "Chloraea Magellanica" by Harriet Schiele
  16. Carol Holdren commented on topic "fredclarkeara kelly longley" by Kelly Longley
  17. Carmen Bou-Crick commented on member plant Oncostele Wildcat var. 'Golden Red Star' by Carmen Bou-Crick
  18. Henry Shaw commented on scheduled event "Diablo View Orchid Society Orchid Show & Sale" by Diablo View Orchid Society
  19. Sharie Heckaman commented on member plant Paph. Magic Cherry by Linda Hartman
  20. Linda Hartman commented on member plant B. nodosa by Linda Hartman