FEEDING NON-PREFERENCE OF Helicoverpa armigera (HUBNER) (LEPIDOPTERA:NOCTUIDAE) BY BEAN GENOTYPES

摘要

Helicoverpa armigera (Lepidoptera: Noctuidae) is a highly polyphagous pest, and due to its feeding behavior it seriously compromises yield of several crops with agronomical importance worldwide. Helicoverpa armigera was recently introduced in Brazil (Czepak et al., 2013) and has been causing losses up to 80% of the production in bean crops where it was found.Cultivation of bean genotypes that posses any resistance category provides lower production costs, especially the reduction of pesticide use to control agricultural pests. The aim of this work was to evaluate the feeding non-preference of H. armigera larvae on bean genotypes in laboratory.