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The work aimed to evaluate the indirect effect of sorghum genotypes resistance on biological aspects of the predator Chrysoperla externa (Hagen) using the aphid Schizaphis graminum (Rondani) as prey. The genotypes used in the study were: GR 11111 and TX 430 x GR 111 (resistant), GB 3B (moderately resistant) and BR 007B (susceptible). Newrly hatched larvae were confined individually in glass vials and fed on S. graminum reared separately in each one of the four genotypes. After emergence, adultsdoi:10.1590/s1519-566x2002000100018 fatcat:qi2dkgqdqvbjrefmfckybp3ujy