COLCHICINE: Used to Change the Ploidy of Clones

Orchid Doctor Propagation

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 7 years ago.

Article Blog   Article Index
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
Share on Social Media:  
Log in to Add a Comment

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: 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: 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. Nancy Shapiro asked question Where did you find this type of orchid pot? in category General Discussion
  2. Charles H Wood asked question Orchids wanted St.Croix usvi in category General Discussion
  3. William Gorski asked question Is this a species or Primary Hybrid? in category General Discussion
  4. Therese Stecher asked question Banrot 40WP in category General Discussion
  5. Chen Jimmy asked question How to determine the species composition? in category General Discussion

New Comments

  1. Dianne Mayne commented on topic "Banrot 40WP" by Therese Stecher
  2. Linda Thorne commented on member plant Paphiopedilum Munchkin Mopsi Aru by Linda Thorne
  3. Carol Holdren commented on topic "Orchids wanted St.Croix usvi" by Charles H Wood
  4. William Gorski commented on topic "Is this a species or Primary Hybrid?" by William Gorski
  5. Henry Shaw commented on member plant Coel. Jannine Banks 'Snow White' by Henry Shaw
  6. Carol Holdren commented on topic "Trichocentrum luridum" by Danny Lyon
  7. Carol Holdren commented on topic "What is the culture for Cattliante Chongkolnee" by Mike Minney
  8. Carol Holdren commented on topic "How to determine the species composition?" by Chen Jimmy
  9. Lois Lane commented on member plant Ctna. Why Not by Alex Maximiano
  10. Carol Holdren commented on topic "SSPECIES OF ORCHID" by JENNIFER CHARMAN
  11. Carol Holdren commented on topic "Why can't I post on this site? " by Lois Lane
  12. Carol Holdren commented on topic "Historic Cattleya" by Karen Johansen
  13. Carol Holdren commented on topic "Encyclia aspera" by William Woodcock
  14. Jim McGuinn commented on topic "Designing a greenhouse for orchid growing" by Ron Hellendall
  15. Mark Bennett commented on member plant Sarcochilus Newbold Alta 'SBC092' by Mark Bennett
  16. Mark Bennett commented on member plant Sarcochilus Newbold High Noon 'SB140' by Mark Bennett
  17. Carol Holdren commented on orchid Epi. Moonlight Firefies
  18. Jeanne Uzar Hudson commented on topic "Paph Support" by Nicholas Levendosky
  19. Rosemary Chenery commented on topic "Lost tag - can anyone provide a name" by Rosemary Chenery
  20. Taylor Savage commented on topic "Myrmecatavola Frances Fox" by Elizabeth Wagner