Abstract
Three transgenic maize hybrids, viz. Prabal YG, Hishell YG and Double YG, producing Bacillus thuringiensis (Bt) CrylAb protein (event Mon 810), were evaluated under field and laboratory conditions for their resistance to spotted stemborer Chilo partellus (Swinhoe). The Bt maize hybrids suffered less damage than their non-Bt iso-hybrids with respect to per cent plant infestation (0.0-0.6), leaf injury rating (1.0-1.1) and per cent stem tunnelling. These hybrids also resulted in significantly higher larval mortality (79.4-100.0%) in laboratory bioassays. The toxin protein produced in leaves was equally effective against neonates and 15-day-old larvae. Neonate larvae consumed less leaf area (5.0-13.8%) in case of Bt hybrids than their non-Bt iso-hybrids.
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Hari, N.S., Jindal, J. & Malhi, N.S. Resistance of Cry1Ab maize to spotted stemborer Chilo partellus (Lepidoptera: Crambidae) in India. Int J Trop Insect Sci 27, 223–228 (2008). https://doi.org/10.1017/S1742758407850983
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DOI: https://doi.org/10.1017/S1742758407850983