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Efficacy of Cotton Bollworm Helicoverpa armigera and Tobacco budworm Heliothis virescens against δ-endotoxin cry1ac and cry2ab expressed by genetically modified cotton plants

Nimbalkar R. K.*,. Shinde S. S1 and Giri  N.R 2

Department of Zoology, Vinayakrao Patil College, Vaijapur, Dist. Aurangabad (MS)
1Department of Zoology, Vivekanand College, Aurangabad
2M. J. M. College of Arts Commerce and Science, Karanjali, Taluka Peth Dist. Nashik (MS)

In present studies genetically modified cotton plant which express δ-endotoxin Cry1Ac and Cry2Ab were cultivated in 2012 and 2013. The efficacy was studied against cotton bollworm Helicoverpa armigera and tobacco budworm Heliothis virescens. Results of study suggest that Cry2Ab traits are effective against these species than Cry1Ac. The survival of Helicoverpa armigera was >90% on flower anthers and square anthers compared to 67% on flower bracts, flower petals, and whole squares from Cry1Ac expressing cotton plants at 72 hours.  The expression of Cry2Ab was more effective against bollworms than Cry1Ac.  On flower anthers and square anthers, expressed by Cry2Ab cotton plant survival of these worm found was 63% at 72 hours. 

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How to Cite this Article:
Nimbalkar RK, SS Shinde and NR Giri, 2015. Efficacy of Cotton Bollworm Helicoverpa armigera and Tobacco budworm Heliothis virescens against δ-endotoxin cry1ac and cry2ab expressed by genetically modified cotton plants. Science Research Reporter, 5(1):72-79.

Editor: Dr. Umesh P. Mogle, Printed, Published and Owned by Dr. Umesh P. Mogle, Published from ‘Kaushalyaaie’, P. No. 43, Priyanka Residancy, Mantha Chaufulli Jalna 431203 (M.S.) India.

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