Two hundred and eight pigeonpea accessions were screened for their resistance to Callasobruchus maculatus (F) by free choice test. The mumber of eggs laid ranged from 4 to 64 and the number adults emerged varied frotn 0 to 35. Hundred per cent survial of Caniculatus was observed in six accessions (PR 5326 UQ-50, PR-5492, PR-530), PR-5576 and PR-6035) where as it failed to develop on PRN-270. Oviposition was not influenced by the level of resistance in the seed and the rate of development was faster in susceptible accessions. Based on the suitability inde... seven accessions were classified as resistant, 26 as moderately resistant, S4 as susceptible and 91 as highly susceptible to C.maculatus.
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Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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