Larval Survival of Spodoptera Litura (F.) First and Second in star on Dual Toxin Bt Cotton (Cry 1 AC +2 AB) Hybrids and Non-Bt Cotton | Zendy

Ramanjali. T et al. Ramanjali. T et al. | Zendy

Open Access

Larval Survival of Spodoptera Litura (F.) First and Second in star on Dual Toxin Bt Cotton (Cry 1 AC +2 AB) Hybrids and Non-Bt Cotton

Author(s) -

Ramanjali. T et al. Ramanjali. T et al.

Publication year - 2017

Publication title -

international journal of zoology and research

Language(s) - English

Resource type - Journals

eISSN - 2278-8824

pISSN - 2278-8816

DOI - 10.24247/ijzroct20172

Subject(s) - spodoptera litura , bt cotton , larva , spodoptera , hybrid , biology , toxin , horticulture , botany , agronomy , microbiology and biotechnology , gene , genetics , recombinant dna

Laboratory assays showed that, dual toxin B. thuringiensis (Bt) cotton cultivars expressing both Cry 1 Ac and Cry 2 Ab endo toxins were more toxic to S. litura, as compared to non-Bt. To observe the survival of first and second in star larvae of S. litura, larvae were reared on leaves, squares and bolls of eleven Bollgard-II cotton hybrids, and non Bt cotton at 60, 75, 90 and 125 DAS of the crop. The mortality of first in star larvae was 100 percent on leaves, where as, it is only 75 per cent on squares of Bollgard-II cotton.

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