Efecto de la luz y de la escarificación en la germinación de las semillas de cinco especies de árboles tropicales secundarios

 

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Autores: Acuña, Pablo I., Garwood, Nancy C.
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:1987
Descripción:We studied the effect of light and scarification of the seed coat on the germination of seeds of five tree species which are characteristic of secondary growth: Apeiba membranacea, A. tibourbou, Luehea seemannii, Trichospermum mexicanum and Guazuma ulmnifolia. The seeds were scarified in sulfuric acid or hot water for 2 or 10 minutes, then germinated in a screened growing house in sunlight and shade.The seeds were not light sensitive. In the controls, germination was very low in both light and shade except in L. seemannii. A requirement for light did not develop after scarification.Scarification increased percent germination in all species by either softening the seed coat or providing a high temperature cue. In L. seemannii, the species with the softest seed coat, hot water increased germination while acid decreased it.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/23977
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/23977
Access Level:acceso abierto