Caracterização e avaliação de acilaçúcar sintético no comportamento da mosca-branca Bemisia tabaci (Gennadius, 1886) biótipo B (Hemíptera: Aleyrodidae) em tomateiro

Abstract

Tomato plant growing is an important activity in Brazil both in production and in consumption. The states of Goiás, São Paulo and Minas Gerais are the main producing states. In order to develop new products with insecticide activity, this work was developed envisaging synthesizing acylsugar, alelochemical present in the leaves that gives natural resistance to the tomato plant L. pennellii and its effects on the behavior of the whitefly. The synthesis process was accomplished in the Organic Chemistry Laboratory and the biological tests in the Integrated Pest Management Laboratory, both belonging to the Federal University of Lavras-Minas Gerais State-Brazil. The used layout was a completely randomized design, with five treatments and five repetitions. The trial consisted of the following treatments: tomato plants Santa Clara cultivar sprayed with pure water (control); tomato plants Santa Clara cultivar sprayed with acylsugar 01 (synthesized starting from sucrose); plants of tomato Santa Clara cultivar sprayed with acylsugar 02 (synthesized starting from the glucose with chloride of zinc as catalyst); tomato plants Santa Clara cultivar sprayed with acylsugar 03 (synthesized starting from the glucose with acetate of sodium as catalyst) and tomato plants L. pennellii splayed with pure water. The concentration of the composition used was of 0.05%. The results showed that the acylsugar 03 affected the behavior of the whitefly in the tomato plant, reducing the egg laying activity. However, it seems necessary to deepen studies to evaluate the extension of the action of this product on the whitefly behavior.