Mini-estaquia aplicada a cinco espécies florestais nativas de interesse para recuperação de áreas degradadas

Abstract

The development of techniques that aim to facilitate the process of production of native forest seedlings is critical to the implementation of projects in areas that have undergone degradation processes that resulted in the plant in order to favour the suppression re-establishment of ecological function of the environment. The aim of this work was to evaluate the minicutting technique, associated with the use of IBA, in vegetative propagation of five native forest species of interest for recovery of degraded areas. The seedlings were used (Schinus terebenthifolius Raddi), (Anadenanthera peregrina (L.) Speng), (Croton floribundus Spreng), (Mimosa bimucronata (DC.) Kuntze) and (Bauhinia forficata Link) from seeds collected from different arrays. IBA tasted concentrations were 0, 1000, 2000, 3000 and 4000 mg L-1. The experimental design was completely randomized with factorial 5 x 4 (forest species x IBA concentrations), with four repetitions of 10 mini-stake per experimental unit. The 120 days of deployment of experiment were evaluated the rooting (%), three larger roots, total and seedling air; number of roots by mini-stake, fresh and dry matter mass of the aerial part ans roots of each treatment. The minicutting technique proved to be feasible to obtain seedlings with five native forest species, especially (Mimosa bimucronata (DC.) Kuntze) and (Schinus terebenthifolius Raddi). The concentrations of IBA influenced for the rooting of the species under study, however, positively peculiar to each one.