Germinação de sementes de flamboyant (Delonix Regia (Bojer ex Hook.) Raf.

Abstract

D. regia is a species belonging to the Fabaceae family. The objective of this work was to evaluate seven methods of overcoming seed dormancy of this species. The design used was completely randomized with four replications of twenty-five plants in the plot. Methods used to overcome foral dormancy: non-scarified seeds (M1); seeds scarified on the side of the embryonic axis (M2); seeds scarified on the side opposite the embryonic axis (M3); seeds immersed in water at 90ºC for 2 minutes (M4); seeds immersed in water at 80ºC for 2 minutes (M5); seeds immersed in water at 90ºC for 1 minute (M6) and seeds immersed in water at 100ºC for 1 minute (M7). The characteristics evaluated were: percentage of emergence (E%) and average time of emergence (TM). The seeds that were immersed in water at 80ºC for 2 minutes; at 90ºC and 100ºC for 1 minute provided the highest means of emergence. The mean emergence time ranged from 22.4 to 27.3 days.