Características Da Germinação De Sementes De 64 Espécies De Leguminosas Florestais Nativas Da Amazônia, Em Condições De Viveiro

Abstract

Several aspects of seed germination of 64 legume species native from the Amazon forest were studied under nursery conditions. From the total, 52 are trees, 10 are lianes, 1 is a shrub and J is a herbaceous plant, all with natural occurence on non-flooded or seasonally flooded sites. Fifty-eight percent of the studied species presented, without pre-treatment, germination above 70% in periods less than 91 days. Seven species with hard tegument exhibited germination lower than 40%. Fifty nine percent of the species from seasonally flooded sites presented hypogeal germination, while fifty four percent of the species from non-flooded sites presented epigeal germination. Poiyembriony occurred in 22% of the studied species. Seeds with lenght greater than 3.1 cm presented hipogeal germination only, while seeds with lenght less than or equal 1.0 cm presented epigeal germination only.