Germinação e crescimento inicial de duas espécies florestais em diferentes substratos

Abstract

The objective of this work was to evaluate the effect of different substrates on germination and initial seed development of Adenathera pavonina and Tabebuia serratifolia. The two species are widely distributed in Brazil and of high ornamental and economic value. The statistical design used was completely randomized, with two treatments (substrates) and one replicate of 15 seeds / species. The experiment was carried out inside the seed laboratory located at the CESIT - Itacoatiara - UEA Higher Studies Center Campus. The following substrates were tested: commercial substrate and expanded vermiculite. It was evaluated the effect of the substrates by the percentage of germination (PG), germination speed index (IVG), leaf numbers (NF), neck diameter (DC), leaf area , root length (CR) and total dry mass (MST) of the seedlings. The data were submitted to analysis of variance and the means were compared by the Tukey test, at 5% probability. For this study it can be concluded that both substrates can be used for the germination of the two species studied.