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Articles by Saruchi Sharma
Total Records ( 3 ) for Saruchi Sharma
  Saruchi Sharma and D.R. Thakur
  Legume seeds are rich and varied source of secondary plant metabolites which are toxic or anti metabolic towards insect pests, possibly by virtue of these toxic substances they show resistance and susceptibility against stored grain pest species. Despite the potential nutritional and health promoting value the presence of antinutritional factors limit biological value and usage of legumes as food. Antinutritional factors interfere with digestion and also make the seeds unpalatable when consumed in raw form. Based on these possibilities the biochemical basis of bruchid resistance has been studied in different legume genotypes and the results recorded revealed that highly resistant soybean genotypes possesed high amount of fats, proteins and antinutritional factors (phenols and 4-5 times more trypsin inhibitors) than cowpea and chickpea (kabuli>desi) genotypes which contain high amount of carbohydrates and low amount of antinutritional factors and were susceptible towards Callosobruchus species.
  Saruchi Sharma and D.R. Thakur
  A comparative study on the varietal preference and developmental behaviour of C. maculatus on thirteen different soybean varieties has been done and results revealed that all the genotypes were highly preferred by C. maculatus for egg laying except harasoya which was with intermediate surface texture. On the basis of developmental behaviour among all the genotypes, bragg was totally resistant, Pb-1, shivalik, JS-9305, JS-9560 and harasoya were found relatively resistant while other varieties, JS-335, Him soya, P9-2-2, P2-2, Pk-472, P13-4 and Palam soya were found susceptible to C. maculatus.
  Saruchi Sharma and D.R. Thakur
  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.
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