Susceptibility of Crude and Semi-Purified Extracts of Nucleopolyhedrovirus Isolates of Helicoverpa armigera (Hubner) to Simulated Sunlight

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Authors

  • Department of Plant Protection, M. H. E. C, University of Tabriz, Tabriz, 516661647 ,IR
  • Project Directorate of Biological Control, P.B.No. 2491, H. A. Farm Post, Bellary Road, Hebbal, Bangalore 560024, Karnataka ,IN
  • Project Directorate of Biological Control, P.B.No. 2491, H. A. Farm Post, Bellary Road, Hebbal, Bangalore 560024, Karnataka ,IN
  • Pest Control (India) Pvt. Ltd. Division: Bio-Control Research Laboratories, Bangalore-560064 ,IN

DOI:

https://doi.org/10.18311/jbc/2007/3895

Keywords:

Geographic Isolates, Helicoverpa armigera, Nucleopolyhedrovirus, Persistence, Simulated Sunlight.

Abstract

The stability of both crude and semi-purified extracts of different HaNPV isolates under simulated sunlight was studied. It was realized that the persistence of both crude and semi-purified suspensions of Negamum isolate collected from Tamil Nadu was most tolerant to simulated sunlight among all the isolates tested in this study. The highest larval mortality (70.12%) was obtained from crude extract of the Negamum isolate as compared with that of semi-purified suspension (54.44%). The order of inhibition of crude viral extracts of HaNPV isolates under simulated sunlight irradiation at 500 W/m2 for 90 minutes was Negamum < Ooty < Coimbatore < Mumbai < Hyderabad < Parbhani < Rahuri, which was similar with that of the semi-purified suspensions with the exception of Parbhani < Hyderabad.

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Published

2007-06-15

How to Cite

Mehrvar, A., Rabindra, R. J., Veenakumari, K., & Narabenchi, G. B. (2007). Susceptibility of Crude and Semi-Purified Extracts of Nucleopolyhedrovirus Isolates of <I>Helicoverpa armigera</I> (Hubner) to Simulated Sunlight. Journal of Biological Control, 21(1), 91–96. https://doi.org/10.18311/jbc/2007/3895

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