Newly Posted Articles

CHROMOSOME NUMBERS: For Phragmipedium Hybrids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Diploidy and polyploidy. A83-933 Read More

PROPAGATION: Asexual by Means of Young Inflorescences

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Inflorescences l.5 cm. (about half an inch) or less taken from sarcanthine orchids can be induced in aseptic culture to proliferate and become plantlets; recommended for commercial practice. A73-20... Read More

PHYSAN 20: Application

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use 1/2 to 1.5 tpg. for most fungus and bacteria; use 2 ttpg. for sterilizing tools. A79-272 Read More

CHROMOSOME NUMBERS: For Species and Hybrids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a most comprehensive listing, refer to OBIII-323 Read More

CHROMOSOME NUMBERS: Importance

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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 almost 8 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

CATASETUMS: Culture to Get Male or Female Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The "Dodson dictum" depends on amount of light exposure received; bright light stimulates female flowers; shade stimulates male flowers. A76-589; A76-605; A76-614The Brubaker system: in addition to... Read More

CLAY, CALCINED: As Cymbidium Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not as good as bark mixes, judging from an experimental growth trial of three years; for details refer to OA84-79 Read More

CLAY, CALCINED: As Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An aggregate used in making masonry blocks, it is good for culture in pots up to six inches; is alkaline in reaction; mix with bark for larger pots. OA82-6 Read More

VIRUS - MERISTEMMING: Elimination by Meristemming Is Not Likely

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A significant part of meristem multiplication is by cell differentiation of presumably virus-infected cells, and these can not be expected to be virus-free. A70-399; A71-622 Read More