3 research outputs found
GERMINATION OF SEEDS OF Platymiscium floribundum VOG. (FABACEAE) UNDER THE INFLUENCE OF TEMPERATURES AND LIGHT
Get PDFPlatymiscium floribundum Vog., uma esp\ue9cie florestal pertencente
\ue0 fam\uedlia Fabaceae, apresenta grande potencial para
explora\ue7\ue3o econ\uf4mica e pode ser utilizada tanto no
paisagismo como em reflorestamentos, na recupera\ue7\ue3o de
\ue1reas degradadas e de preserva\ue7\ue3o permanente. Diante de
sua import\ue2ncia, o trabalho teve como objetivo estudar a
influ\ueancia da luz e temperaturas na germina\ue7\ue3o de
sementes de Platymiscium floribundum. Avaliou-se a germina\ue7\ue3o
e vigor das sementes sob temperaturas de 25 e 30\ubaC constantes e
20- 30\ubaC alternada em diferentes regimes de luz: branca (LB),
verde (LV), vermelha-distante (LVD), vermelha (LV) e aus\ueancia de
luz (A). O delineamento experimental foi inteiramente ao acaso, em
esquema fatorial 3 x 5, com quatro repeti\ue7\uf5es de 25 sementes.
As vari\ue1veis analisadas foram: germina\ue7\ue3o, primeira
contagem de germina\ue7\ue3o, \uedndice de velocidade de
germina\ue7\ue3o (IVG), comprimento e massa seca de pl\ue2ntulas
(raiz e altura da parte a\ue9rea). As sementes de Platymiscium
floribundum expressam seu m\ue1ximo vigor em ambiente iluminado
independentemente da temperatura.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 its importance, this
work was, it was aimed to study the influence of light and temperature
on seed germination of Platymiscium floribundum. We evaluate the
germination and vigor Under constant and alternate temperatures of 25
and 30 \ubaC 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
