Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad-580 005, Karnataka, India
*Corresponding author's E-mail: garuda344@gmail.com
Online published on 29 November, 2011.
Bt cotton genotypes (BG-I, BG-II) under protected condition responded similarly for sucking pests with no differential susceptibility and no variation in the egg population of Helicoverpa armigera (Hubner). All second generation Bt cotton genotypes were better than BG-I genotypes to larval incidence and damage due to H. armigera, Earias vittella (Fabricius), Spodoptera litura (Fabricius) and Pectinophora gossypiella (Saunders) under unprotected condition. BG-II genotypes recorded higher content of Cry protein in all plant parts compared to corresponding BG-I genotypes.
