Effect of 17 Elite Mulberry (Morus spp.) Genotypes on Rearing Performance of Silkworm and its Cocoon Quality

摘要

Mulberry silkworm (Bombyx mori L.) responds to nutritional parameters, which are provided through mulberry varieties. The nutritional status and quality of the leaf consumption forms the basis for selection of suitable mulberry germplasm. The Department of Sericulture, University of Agricultural Sciences, Gandhi Krishi Vignana Kendra, Bangalore is maintaining total of 100 genotypes, out of these, we are selecting 17 genotypes for the present study. All the genotypes noticed significant difference in all the rearing parameters. Among these, MR-2 recorded minimum total larval duration (27.49 days), maximum mature larval weight (29.62 g/10 larvae), single cocoon weight (1.781 g), shell weight (0.347 g), shell ratio (19.48%), silk productivity (3.319 cg/day) and ERR (91.65%). The next best one were MI-79, Surat local and MI-0142. But none of the genotypes recorded maximum rearing parameters than the comparison check variety V-1. Hence, among all the selected genotypes, MR-2, MI-79, Surat local and MI-0142 genotypes out gone as superior with respect to rearing performance. On other hand silk parameters viz, single filament length (812.39 m), filament weight (0.265 g) and denier (2.936) shows maximum in MR-2 followed by MI-79 and MI-0142. But, here also none of the genotype shows maximum silk parameters than the check variety V-1. It means that, MR-2, MI-79 and MI-0142 are superior with respect to silk parameters by comparing other genotypes except V-1.