Category: Orchid Doctor

POLYETHYLENE FILM: Liner for Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For conserving heat the most economical is the 4 mil polyethylene; it provides a slight shading effect. OD78-2 Read More

POLYGAL: Greenhouse Covering Materials

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Made with two layers of plastic with dead air space between to conserve heat by providing insulation. A87-1171 Read More

POLYGRAPH (LIE DETECTOR): Used on Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A polygraph expert (Cleve Backster) attached electrodes to leaves of plants (orchids not mentioned) and recorded reactions apparently related to emotional reactions; see Wall Street Journal, Feb.19... Read More

POLYMIN: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A coined word to denote the result of a cross between a miniature and a tetraploid, in contrast to a diploid standard. OA71-105 Read More

POLYPLOID: Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A clone with three or more chromosome sets; they exist with five, six, eight and even sixteen times the haploid number. AU78-47 Read More

POLYPLOIDY: It Influences Plant Improvement

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In flower characteristics; its effect on fertility; in production of flowers, refer to AS5-1445; OBIII-325 Read More

POLYPLOIDY: Possible Induction by Cold Shock

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In cymbidiums, cold can alter cell division with some surprising genetic consequences, even mimicking the effect of colchicine. OA80-108 Read More

POLYPLOIDY: Tetraploids in Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Chance occurrence has resulted in a number of great clones, such as Alexanderi 'Westonbirt', Pauwelsii 'Comte de Hemptinne', Rosanna Pinkie', and Babylon 'Castle Hill'; studies in chromosome mutati... Read More

POLYPODIUM FIBER: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A large genus of ferns; used in Australia successfully when handled properly; used before the advent of barks, etc. A76-773; AU79-198 Read More

POLYRRHIZA LINDENII: A Problem Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Culture is the same as for vandas; keep it on the original host branch; place in a bright, ventilated spot; grows intermediate or warm; keep it wet. A79-1022 Read More