Avaliação do extrato de cravo-da-índia na germinação e na sanidade de sementes de jurema preta e faveleira.

Abstract

Mimosa tenuiflora and Cnidoscolus quercifolius are frequent species in the caatinga biome and are useful for the production of fodder, energy, recovery of degraded areas among others. For to the necessity of studies on the health of forest seeds and take into account that in the literature biography, few reports of the pathogens associated to the seeds studied were analyzed, the objective of this study was to evaluate the effect of the hydroalcoholic extract of clove in the germination and sanity of Mimosa tenuiflora and Cnidoscolus quercifolius seeds. The experiment was carried out at the Laboratory of Forest Pathology of the Federal University of Campina Grande, Patos- PB. The germination test was conducted using opaque white plastic containers, with the sand substrate washed and sterilized, and seed dormancy breaking was performed; In this experiment the evaluated parameters were: percentage of germination and rate of germination. In the sanity test, the "Blotter Test" filter paper method was used to develop the microorganisms. 550 seeds of Cnidoscolus quercifolius and 550 of Mimosa tenuiflora were used for each test. The tests were distributed in 5 treatments for each species (T1, T2, T3, T4, and T5, being, respectively, 0%, 25%, 50%, 75% and 100% of clove extract), with 4 replicates of 25 seeds per container. The results were submitted to analysis of variance and the averages were compared by the Tukey test at 5% of significance. Clove extract, in higher concentrations, favored the germination of the species and reduced its microflora.