Utilização do extrato da casca da jurema preta para controle da Glomerella Cingulata

Abstract

The present work aimed to verify the antifungal effect of the hydroalcoholic extract of the stem bark of Jurema Preta on the mycelial growth of the fungus Glomerella cingulata. In the in vitro tests, 5 treatments were used, T1 (0:0), T2 (1:1), T3 (1:2), T4 (1:4) and T5 (1:6), with different concentrations of extract, with 4 repetitions per treatment and 2 plates per repetition. In a Petri dish, with PDA culture medium, 30 µl aliquots of the extract were added superficially and spread with a drigalski handle, a mycelium of 3 mm in diameter from the fungus was then inserted centrally in the plate. The plates were measured until they reached 9 cm in diameter, on one of their sides, in the control plates, and the measurements were taken at a 24-hour interval. For data analysis, analysis of variance was performed and means were compared using Tukey's test. The results obtained showed that T2 was the most effective in the test, managing to delay growth up to 96 hours after inoculation. Despite the results, the extract did not show satisfactory antifungal activity, requiring further tests and studies on the subject.