Tabebuia rosea germination capacity and rate have been examined under light and dark conditions. However, seeds responses to light quality, in particular to short and mid-wavelengths, are not well known. We hypothesized that short wavelengths would have a positive effect on T. rosea germination. The effects of short, mid and long-wavelengths on germination capacity, rate (germination rate index, germination rate R50, a devised index of germination rate R50´ and peak value), mean daily germination and germination value were evaluated. Light quality had little effect on germination capacity; it was reduced only in darkness. Seeds under short and mid-wavelengths germinated faster (germination rate) than under any other light treatments. We concluded that although T. rosea seeds respond to all light quality treatments, the short and mid-wavelengths are the cue for increasing germination speed. For synchronizing germination, short and mid-wavelengths transmitted by red cellophane paper can be used as a pre-germinative treatment for restoration and silvicultural purposes.

• Autores: Basto, Sofía; Pontificia Universidad Javeriana; Ramírez, Claudia; Pontificia Universidad Javeriana
• Tipo de recurso: Article of journal
• Fecha de publicación: 2014
• Institución: Pontificia Universidad Javeriana
• Repositorio: Repositorio Universidad Javeriana
• Idioma: eng
• OAI Identifier: oai:repository.javeriana.edu.co:10554/31206
• Acceso en línea: http://revistas.javeriana.edu.co/index.php/scientarium/article/view/8732; http://hdl.handle.net/10554/31206
• Palabra clave: null; Bignoniaceae; short-wavelengths; mid-wavelengths; germination capacity; germination rate; pre-germinative treatments.; null
• Rights: openAccess
• License: Atribución-NoComercial-SinDerivadas 4.0 Internacional