COLCHICINE: Results to Date

Orchid Doctor Propagation

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 4 years ago.

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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
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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 CONVERSION: In the Future 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 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: 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

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  2. Rae Walker asked question Dendrobium No I’d. HELP! in category Dendrobiums
  3. John Hyatt asked question Deformed growths on BLC King of Taiwan in category Cattleya Alliance
  4. Darrin Duling asked question Unidentified Bratonia in category General Discussion
  5. Armando Mantellini started topic Cattleya jenmanii missing awards in category Cattleya Alliance

New Comments

  1. Carol Holdren commented on topic "Dendrobium No I’d. HELP!" by Rae Walker
  2. Carol Holdren commented on article "CATTLEYAS: Control of Blooming Time" by Robert M. [Bert] Hamilton (Compiler)
  3. Carol Holdren commented on member plant Lc. Nice Holiday 'Suntopia' by William Gorski
  4. Robert H. Findlay commented on topic "Phragmipedium Cape Sunset or Eric Young?" by Darrin Duling
  5. Robert H. Findlay commented on member plant Phrag. Ecuagenera Dream by Robert H. Findlay
  6. Tatjana Opekunova commented on article "CATTLEYAS: Reasons for Non-flowering" by Robert M. [Bert] Hamilton (Compiler)
  7. Carol Holdren commented on member plant Zygopetalum var. Big Red One by Wyatt Parker
  8. Carol Holdren commented on topic "Need ID, Please" by Oliver Quin Surco
  9. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D
  10. Debbie Chase commented on topic "Identify This Orchid " by Debbie Chase
  11. Andrew Chan commented on member plant V. Yano Blue var. Ploenpit by Mary Lane
  12. William Gorski commented on member plant Alcra. Tropic Lily 'Hilo Space Ship' by Mary Lane
  13. Osura Mindula Gunasena commented on topic "Help to Identify the Id of this Vanda" by Osura Mindula Gunasena
  14. Renee Hawes commented on member plant Phal. I-Hsin Spot Eagle var. I-Hsin Spot Eagle 'Montclair' AM/AOS 'Ta-Lin Spot x Black Eagle' by Renee Hawes
  15. Renee Hawes commented on member plant Phal. Liu's Berry by Renee Hawes
  16. Renee Hawes commented on member plant Phal. Yushan Christopher var. Harlequin 'Little Panda' by Renee Hawes
  17. Carol Holdren commented on topic "How to repot a Mattie Shave" by Pam Alexander
  18. Frank Cambas commented on member plant Zns. Cynosure var. Blue birds by Ben MG
  19. Robert H. Findlay commented on topic "Lady Bug or dangerous bug" by John Small
  20. Robert H. Findlay commented on topic "Help with ID of this Eria sp." by Robert H. Findlay