Caracterização morfológica de frutos, sementes, plântulas e germinação de Oreopanax fulvus Marchal

Abstract

This study aimed to characterize the morphology of fruits, seeds and seedlings and evaluate the germination of Oreopanax fulvus Marchal. After collection, it was carried out the biometrical and morphological characterization of infructescences, fruits and seeds. Seedlings were also characterized, after germination procedures. Two germination experiments were realised: the first one to evaluate the performance of germination on different substrates and the second to test the effects of the fruit maturation on the germination parameters. The fruits are globose, indehiscent and purple when mature. There is no significant difference in fruit size regarding to maturation. The seeds are small and elliptical, with ruminated endosperm and spatulated embryo. Germination is phanero-epigeal. The cotyledons remain in the seedlings for 150 days after germination. There was no significant difference on seed germination rates over different substrates, the overall average was 42.2%. In the maturation experiment only seeds from mature fruits germinated (68.3%), demonstrating that this is an essential requirement for adequate germination of O. fulvus.