Estudo da maturação de sementes de carvalho vermelho (Miconia cinnamomifolia (Dc.) Naud.)

Abstract

Miconia cinnamomifolia it is na arboreal plant of the Melastomataceae family. This work aims to evaluate the physiological maturity and germination capacity of Miconia cinnamomifolia seed. The maturation study were conducted in the Serra do Caparaó, Ibitirama–ES, during 2000/2001 and 2001/2002. Each inflorescence was identified at anthesis. The treatments were constituted by six intervals of seed harvest, which were 35, 50, 65, 80, 95 and 110 days after anthesis. The following parameters were evaluated: fruit color, seed moisture content, dry matter accumulation, germination test. The rehearsals were accomplished in Peter dish, in a fully randomized design with four replicates of 25 seeds. The results showed that the physiological maturity in miconia seeds occurs between 100 a 120 days after anthesis. Higher value of loss of water of the seed coincides with higher accumulation of dry mass, that increases until about 80 days after anthesis. The collection of the seeds in the serrana region of the Caparaó, must be made next to the 110 days to anthesis, when the coloration of the fruits is black and the seed water level is approximately 22,92%. The seeds, under natural conditions of the region, germinated after 66 days the sowing.