Comparative developmental compatibility of Callosobruchus maculatus on cowpea, chickpea and soybean genotypes

Comparative developmental compatibility of Callosobruchus maculatus on cowpea, chickpea and soybean genotypes

2014

E11530

Seeds of all legumes are vulnerable to be attacked by seed beetles, both in field and storage. The resistant/tolerant genotypes certainly be helpful to reduce storage losses by bruchids and other insect pests and can be exploited by the breeders for the evolution of new varieties. This vital information of varietal resistance among different genotypes of cowpea, chickpea and soybean will assist in devising the control procedures against these legendary pest species. The expansion of insect resistance and high yielding varieties having moderate to high levels of resistance is a promising approach for exploration of integrated pest management strategy. By keeping in view a comparative growth performance of C. maculatus on genotypes of different legumes has been studied. And the results revealed that all the legume genotypes of soybean (except harasoya) and cowpea with smooth seed coat texture were highly preferred by C. maculatus for egg laying than chickpea genotypes (kabuli>desi). Among all the genotypes of three legumes highest percentage of adult emergence, growth index, percentage reduction in weight and low developmental period was recorded in cowpea followed by chickpea (kabuli>desi) and least in soybean which may be due to physical and chemical factors which resist the growth and development of C. maculatus on soybean genotypes.

7(6):270-276, ASIAN JOURNAL OF BIOLOGICAL SCIENCES

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