International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:10, October, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(10): 2170-2177

Effect of BG-II Cotton Hybrids and Non Bt Cotton on Weight of Different Instars of Spodoptera litura (FAB.)
T. Ramanjali1*, T.V.K. Singh2* and C. Narendra Reddy1
1Department of Entomology, College of agriculture, Rajendranagar,Hyderabad-500030, Telangana, India
2Department of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500030, Telangana, India
*Corresponding author

Laboratory assays showed that dual toxin Bacillus thuringiensis (Bt) cotton cultivars expressing both Cry 1 Ac and Cry 2 Ab endotoxins (BG-II) were more toxic to Spodoptera litura (Fab.) larvae compared to non Bt cotton. The weight of first, second, third and fourth instar larvae were recorded, which were fed with leaves, squares and bolls of eleven dual toxin Bt cotton cultivars at 60, 75, 90 and 125 days after sowing of the crop. The final weight of each instar was reduced at seven days after release when compared to non Bt cotton cultivars. Reduction in the weight was more in case of first, second and third instars than the fourth instar larvae of S. litura. Hence the BG-II cotton was more toxic to first, second, third instar larvae than fourth instar.

Keywords: Dual toxin Bt cotton, S. litura, weight.

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How to cite this article:

Ramanjali, T., T.V.K. Singh and Narendra Reddy, C. 2017. Effect of BG-II Cotton Hybrids and Non Bt Cotton on Weight of Different Instars of Spodoptera litura (FAB.).Int.J.Curr.Microbiol.App.Sci. 6(10): 2170-2177. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.