GERMINATION OF SEEDS Platymiscium floribundum VOG. (FABACEAE) UNDER THE INFLUENCE OF TEMPERATURES AND LIGHT

• Autor(a) principal: Alves, Magnólia Martins
• Data de Publicação: 2016
• Outros Autores: Alves, Edna Ursulino, Lima, Maria de Lourdes dos Santos, Rodrigues, Caroline Marques, Silva, Bruno Ferreira da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/24225
• topic: force; forest species; photoblastism; jacaranda.; vigor; espécie florestal; fotoblastismo; jacarandá.

 Platymiscium floribundum Vog., a forest species belonging to the family Fabaceae, has great potential for economic exploitation and can be used both in landscape and in reforestation, in the restoration of degraded areas and permanent preservation. Given the importance of its work, it was aimed to study the influence of light and temperature on seed germination of Platymiscium floribundum. We evaluated the germination and vigor under temperatures of constant 25 and 30ºC and  alternated 20-30°C in different light regimes: White (LB), green (LV), red-far (LVD), red (LV) and absence light (A). The experimental design was completely randomized in a factorial 3 x 5 with four replications of 25 seeds. The variables analyzed were: germination, first count of germination, germination speed index (IGV), length and seedling dry weight (root length, shoot length of seedlings). The seeds of Platymiscium floribundum express their maximum force in illuminated environment independent of the temperature.