Regulador vegetal na germinação de Enterolobium schomburgkii

Abstract

Enterolobium schomburgki belongs to the Fabaceae family and is great for reforestation of degraded areas of permanent preservation, standing out for its rapid initial growth. This study was to evaluate the germination of species Enterolobium schomburgkii under exposure times and different doses of Gibberellin and Photoperiods. For that collected up seeds in the municipality of Sinop. The treatments tested were four doses of gibberellic acid (GA 3) (0, 100 and 500 mg L-1) during the soak time of 20 min and light conditions: Dark and photoperiod of 12 hours. The physiological quality was analyzed from the following parameters: percentage of germination and germination speed index and mass seedling after 5 days of incubation. The experimental design was completely randomized and subjected to analysis of variance and the 5% Tukey test. For both tests with Gibberellin as for tests with light, there was no significant difference to Tukey 5% probability to Enterolobium schomburgkii seeds. Numbness of Enterolobium schomburgkii seeds is strictly physical, and there is no physiological dormancy. Germination Enterolobium schomburgkii not respond or positively or negatively to treatment with Gibberellin dosages up to 500 mg.l-1.As seed Enterolobium schomburgkii not have requirements for the light regime during the germination process.