Maturação fisiológica de Amburana cearensis (Fr. All.) A. C. Smith. espécie da caatinga em extinção.

Abstract

Amburana cearensis it is a arboreal plant of the family Leguminosae Papilionoidea, indicated it stops use of wood, medicine caretaker, ornamental plant, forest restoration, system agroflorestais, melífera, fodder plants among others. This work objectified to determine pointers of the physiological maturation of Amburana cearensis. In August of 2008 they had initiated the collections of the fruits in the city of Malta - PB and lead to the Laboratory of Seeds of the Federal University of Campina Grande. In each harvest they had been evaluated: coloration of the fruit, humidity, cool mass, dry mass, spoiled seeds, germination of the seeds e percentage of plântulas normal and abnormal. The experimental delineation was entirely casualizado with four repetitions of 25 seeds. The gotten results had allowed to evidence that, in the fifth week, before the dehiscence (22/09), the fruits presented themselves with dark and wrinkled brown apex, and the black seeds with coloration. They had been registered in this point, texts of water of 49% for fruits and seeds, respectively. Seeds submitted to the germination test on sand, 250C, under constant light, had presented taxes of germination (emission of hipocotyle) of 94%; abnormal 3% of plantlets and 1% of seeds deceased. The beginning of the dehiscence and the accented change more of coloration of the fruits had revealed as good pointers of the harvest point.