Efecto de la luz y de la escarificación en la germinación de las semillas de cinco especies de árboles tropicales secundarios
Wedi'i Gadw mewn:
| Awduron: | , |
|---|---|
| Fformat: | artículo original |
| Statws: | Versión publicada |
| Dyddiad Cyhoeddi: | 1987 |
| Disgrifiad: | 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. |
| Gwlad: | Portal de Revistas UCR |
| Sefydliad: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Iaith: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/23977 |
| Mynediad Ar-lein: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/23977 |
| Access Level: | acceso abierto |