Category: Orchid Doctor

COLCHICINE: And Dendrobiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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: And Production of Tetraploids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 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+ Read More

COLCHICINE: And Vandas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Induction of polyploidy; 0.1% of solution used in test; 29% of plantlets converted to tetraploid. NH73(2)19 Read More

COLCHICINE: In Cymbidiums

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

COLCHICINE: Results to Date

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

COLCHICINE: What it Is

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 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; ... Read More

COLD GROWING: Some Reliable Plants for Cold Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Laelia anceps, L. albida, L. autumnalis, L. gouldiana, L. speciosa, L. purpuraturn, L. superbiens, and their hybrids. OIE85My-8 Read More

COLD PROTECTION: In Sudden Cold Spells

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Florida plants grown in the open can can be moved to a closed area; if the forecast is for 40 deg.F. or lower, move them into a glass house or into the home, or cover with polyethylene; turn on ... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More