Antixenosis mechanism of resistance in pigeonpea to the pod borer, Helicoverpa armigera.

    Kumari, D A and Reddy, D J and Sharma, H C (2006) Antixenosis mechanism of resistance in pigeonpea to the pod borer, Helicoverpa armigera. Journal of Applied Entomology, 130 (1). pp. 10-14. ISSN 0931-2048

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    Abstract

    The noctuid pod borer, Helicoverpa armigera, is one of the most important pests of pigeonpea, and plant resistance is an important component for minimizing the extent of losses caused by this pest. To develop insect-resistant cultivars, it is important to understand the contributions of different components of resistance, and therefore, we studied the antixenosis mechanism of resistance to H. armigera in a diverse array of pigeonpea genotypes under no-choice, dual-choice, and multi-choice conditions. Antixenosis for oviposition was observed in case of ICPL 187-1, ICP 7203-1, ICPL 88039, T 21, ICPL 84060, and ICPL 332 under no-choice, dual-choice and multi-choice conditions. However, the number of eggs laid on ICPL 88039, T 21 and ICP 7203-1 did not differ significantly from those on ICPL 87 under dual-choice conditions. The susceptible check, ICPL 87 was highly preferred for oviposition. The genotypes ICP 7203-1, ICPL 187-1, T 21, ICPL 332, and ICPL 84060 can be used as sources of non-preference mechanism of resistance in pigeonpea improvement programs to breed for resistance to H. armigera.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Helicoverpa armigera, antixenosis, pigeonpea, resistance mechanisms
    Subjects: Mandate crops > Pigeonpea
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 07 Oct 2011 10:57
    Last Modified: 07 Oct 2011 10:57
    URI: http://oar.icrisat.org/id/eprint/2072
    Official URL: http://dx.doi.org/10.1111/j.1439-0418.2005.01024.x
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: The authors are thankful to the staff of entomology of their help in the experiments and to Dr. M.K. Dhillon for reviewin the manuscript
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