Morphological aspects of fruits, seeds, germination and seedlings of two Amazonian timber species. I. Dinizia excelsa Ducke (angelim-pedra). II. Cedrelinga catenaeformis Ducke (cedrorana) - Leguminosae: Mimosoideae

Abstract

The two timber species in this study are native to the Amazonian non-flooded forest. Although they are of great economic interest there is little information regarding the morphological aspects of their seed germination. The present study addresses the morphological characteristics of fruits, seeds and seedlings of Cedrelinga catenaeformis Ducke and Dinizia excelsa Ducke. Furthermore, it reports on their type of germination showing aspects of the morphology at various stages of the plant's development, from radicle protrusion to normal seedling, development with the emergence of the first foliage leaves. The studies on both species were carried out in the seed laboratory at INPA/CPST. Germination tests were performed at 25°C, in 30x20x5cm plastic trays with 50 seeds of each species using vermiculite as substrate. The data obtained in the present study aim to facilitate the recognition of these species in the field, contributing to the morphological aspects of seeds, germination and seedlings.