Artículos de revistas
On the germination and dormancy of dispersal units of Brachiaria decumbens staff
Fecha
1996-12-01Registro en:
Arquivos de Biologia e Technologia, v. 39, n. 3, p. 595-606, 1996.
0365-0979
2-s2.0-33748818519
6960838311041673
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The effect of light and temperature on germination of Brachiaria decumbens as well as the action of some dormancy breaking chemicals were tested. Two seed batches stored different times were used. The results show that seeds failed to respond to alternating temperature regimes and different light qualities. Seeds were indifferent to white light at 25°C. KNO3, ethanol and H2SO4 failed to break seed dormancy, whereas KCN and H2O2 partially reduced dormancy of two month stored seeds. The results suggest a metabolic character of dormancy in new (freshly collected) seeds and confirm the occurence of two types of dormancy in B. decumbens seeds.