Management of chickpea pod borer, Helicoverpa armigera (Hubner) through Nuclear Polyhedral Virus isolates

Management of chickpea pod borer, Helicoverpa armigera (Hubner) through Nuclear Polyhedral Virus... Investigations were carried out on Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) isolates collected from different parts of India to study their genetic diversity through molecular characterization and their assessment in the IPM of Helicoverpa armigera on chickpea under field conditions. Variations were found in the DNA profiling of different HaNPV isolates. The similarity matrix relating the different isolates showed similarity co-efficients ranging from 0.38 to 0.82. The highest genetic similarity index of 0.82 was seen between the isolates from Raichur and Guntur followed by 0.77 between the isolates from Coimbatore and Raichur. Field evaluation of different HaNPV isolates against H. armigera in the chickpea ecosystem at the Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka for 2 years revealed that the performance of the Gulbarga and Coimbatore isolates was better than that of others in terms of their ability to cause greater larval mortality of H. armigera with a greater yield of chickpea. The Incremental Benefit Cost Ratio was highest with the Gulbarga (2.88) and Coimbatore (2.83) isolates, followed by the Dharwad isolate (2.39). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Management of chickpea pod borer, Helicoverpa armigera (Hubner) through Nuclear Polyhedral Virus isolates

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Publisher
Springer US
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1007/s11119-009-9115-3
Publisher site
See Article on Publisher Site

Abstract

Investigations were carried out on Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) isolates collected from different parts of India to study their genetic diversity through molecular characterization and their assessment in the IPM of Helicoverpa armigera on chickpea under field conditions. Variations were found in the DNA profiling of different HaNPV isolates. The similarity matrix relating the different isolates showed similarity co-efficients ranging from 0.38 to 0.82. The highest genetic similarity index of 0.82 was seen between the isolates from Raichur and Guntur followed by 0.77 between the isolates from Coimbatore and Raichur. Field evaluation of different HaNPV isolates against H. armigera in the chickpea ecosystem at the Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka for 2 years revealed that the performance of the Gulbarga and Coimbatore isolates was better than that of others in terms of their ability to cause greater larval mortality of H. armigera with a greater yield of chickpea. The Incremental Benefit Cost Ratio was highest with the Gulbarga (2.88) and Coimbatore (2.83) isolates, followed by the Dharwad isolate (2.39).

Journal

Precision AgricultureSpringer Journals

Published: Mar 28, 2009

References

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