RESISTÊNCIA EM GENÓTIPOS DE ARROZ A BROCA DO COLO Elasmopalpus lignosellus (ZEILER 1848) (LEPIDOPTERA: PYRALIDAE)

Abstract

Rice (Oryza sativa L.) is an important crop that is widely used to feed the world's population. Insects are the main limiting factors of productivity in rice crop. The lesser cornstalk borer Elasmopalpus lignosellus (Zeiler 1848) (Lepidoptera: Pyralidae) is a pest that damages the newly emerged rice plant, reduce the “stand” and often requires replanting. The objective of this work was to identify source of resistance in rice genotypes to E. lignoseilus. Thirty-day-old rice plants were infested with newly emerged larvae and evaluated to determine the intensity of damage and biological parameters of the insect. The genotypes Canela de Ferro, Confiança, Esmeralda, Lajeado Ligeiro and Primavera are considered resistant to E. lignosellus and can be used by rice producers as a component of IPM or used in rice breeding programs as a source of resistance to the lesser cornstalk borer.