Category: Propagation

CHROMOSOME NUMBERS: Importance

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are significant for cymbidiums, but not for others such as paphiopedilums, for breeding purposes. OA78-17 Read More

CHROMOSOMES: Changes in 1987

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A review of recent events and efforts to conserve wild orchids; improvements in the face of rapacious exploitation suggested, refer to A88-31 Read More

FLASKING CASE: Made Out of a Foam Picnic Cooler

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago How to make and use; refer to A77-929+ Read More

COLCHICINE CONVERSION: In the Future

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 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 pentaploid... Read More

COLCHICINE: And Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Conversion rate to higher ploidy is more common than with other genera; the selection criteria is most important. AU80-49; FR90; OA78-16 Read More

COLCHICINE: And Dendrobiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Doubling chromosomes in meristem culture; percent of concentrations required; number of days to induce doubling of chromosomes; other data; refer to NH73(2)-12+ Read More

COLCHICINE: Results to Date

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 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 flow... Read More

COLCHICINE: Used to Change the Ploidy of Clones

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 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 tetrap... Read More

FLASKING: Culture Medium for Terrestrial Cypripediums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Excellent results reported with: Hyponex 3 grams; Difco-Bacto peptone or tryptone 2 grams, sucrose 35 grams, agar 15 grams, water 1000 ml. and pH adjusted to 5.0 A63-354+; A63-927 Read More

MERISTEMMING: Of Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Procedures stage by stage; refer to OD66-45+ (G.S.Morel); OD69-111+ Read More