Effect of desiccation, temperature, and moisture content on seed storage of three tropical tree species

We studied the viability of seeds of Hyeronima alchomeoides Fr. Allemao, Virola koschnyi Warb. and Vochysia guatemalensis D. Smith in relation to desiccation, seed moisture content, and storage temperature. Seed was either desiccated in chambers with activated silica gel or using air passed through...

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Bibliographic Details
Published in:	Forest science Vol. 43; no. 4; pp. 595 - 601
Main Authors:	Gonzalea J, E, Fisher, R.F
Format:	Journal Article
Language:	English
Published:	Bethesda, MD Society of American Foresters 01-11-1997
Subjects:	ABA Agronomy. Soil science and plant productions ALMACENAMIENTO Biological and medical sciences BOIS DEHYDRATION DESHIDRATACION DESHYDRATATION DICOTILEDONEAS DICOTYLEDONE DICOTYLEDONS EUPHORBIACEAE Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants GERMINACION GERMINATION GRAINE HYERONIMA HYERONIMA ALCHORNEOIDES MADERA PLANT WATER RELATIONS RECALCITRANT SEEDS RELACIONES PLANTA AGUA RELATION PLANTE EAU SEED SEEDS Seeds and other planting stocks SEMENCE SEMILLA SEMILLAS STOCKAGE STORAGE TEMPERATURA TEMPERATURE TROPICAL ZONES VIABILIDAD VIABILITE VIABILITY VIROLA VIROLA KOSCHNYI VOCHYSIA VOCHYSIA GUATEMALENSIS WOOD ZONA TROPICAL ZONE TROPICALE Central America America Costa Rica Recalcitrant seed Seeds Property composition relationship Tropical zone Temperature effect Environmental factor Growth regulator treatment Controlled environment study Dicotyledones Angiospermae Water content Abscisic acid Euphorbiaceae Plant growth substance Hardwood forest tree Inhibition Species Hyeronima alchorneoides Interspecific comparison Desiccation Germination Myristicaceae Tropical forest Vochysiaceae Seed storage Vochysia guatemalensis Forestry Virola koschnyi Spermatophyta Viability
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Summary:	We studied the viability of seeds of Hyeronima alchomeoides Fr. Allemao, Virola koschnyi Warb. and Vochysia guatemalensis D. Smith in relation to desiccation, seed moisture content, and storage temperature. Seed was either desiccated in chambers with activated silica gel or using air passed through columns of activated silica gel. Two seed moisture contents were achieved: 25-30% and 6-8%. Desiccated seeds were stored at either room temperature (25 +/- 1 C ) or in a cold room (4 +/- 1 C). Seeds of V. koschnyi and V. guatemalensis did not tolerate the loss of moisture and lost their viability completely. The seeds of H. alchorneoides tolerated desiccation treatments without significant loss of viability. A combination of low temperatures (4 +/- 1 C) and low seed moisture content (68%) allowed seeds to be stored for 6 mo. However, mean germination was reduced by storage. We also attempted to inhibit the germination of V. guatemalensis by treatment with five concentrations of abscisic acid: 10(-4), 10(-6), 10(-10), 10(-15), and 10(-20) M. Abscisic acid failed to stop the germination of fresh seeds at any concentration tested
Bibliography:	F60 1997070504 K01
ISSN:	0015-749X 1938-3738