Identifying sources of corn cultivar resistance to Spodoptera frugiperda (J.E. Smith, 1797) in a greenhouse

Two experiments were conducted in a greenhouse, with the objective of ident ifying sources of resistance in 15 corn cultivars to Spodoptera frugiperda The following cultivars were utilized CMS-35, CMS-36, Dina-70, Cargill-525, Pioneer-3210, Pioneer-6875, BR-201, BR-451, AG-106, AG-510, CMS-22, Contim ax-322, BR-201, Jatina C-3 Anao, Cargill-511 e BR-106. When the plants had 8 to 10 leaves they were infested with 30 newly ecloded larvae per plant. D amage evaluation was made 10 to 14 days after infestation, in both experime nts, using a visual note scale from 0 to 9. There were no statistical diffe rences among cultivars for the parameters evaluated damage, weight, length and survival larvae. Nevertheless a significant linear correlation was foun d between: weigth x larvae length (n = 0,7776, P = 0,01), demonstrating tha t these parameters can be utilized in the study of corn resistence to S. fr ugiperda.