National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Studies on different tree mulberry genotypes on rearing performance of silkworm (Bombyx mori L.) was carried out to identify the best performing genotypes based on the bioassay performance of silkworm cross breed PM x CSR2 during rainy, winter and summer seasons of 2018-19at the Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore. The present study comprised of six mulberry genotypes viz., MI-012, MI-79, MI-21, MI-139, MI-516, ME-05 and two check varieties V1 and M5. These mulberry genotypes as tree were allowed to grow crown height of 5 feet from the ground level and maintained as tree. The performance of tree mulberry genotypes varied significantly for different larval and cocoon characters in different seasons. Among the genotypesMI-012 performed better by recording highest mean cocoon parameters viz., cocoon weight (1.67g), pupal weight (1.39g), silk filament length (769.70m), silk filament weight (0.24g) and silk productivity (3.24cg/day). On the other hand ME-05 recorded maximum cocoon shell weight (0.38g), cocoon shell ratio (17.57%) and effective rate of rearing 93.11%. Whereas, the genotype MI-516 recorded significantly maximum fifth instar larval weight 26.58g followed by MI-012 (26.41g).The genotype ME-79 recorded significantly maximum denier (2.79), followed by MI-012 (2.76) when compared to other genotypes. Based on the bioassay study of silkworm, MI-012 has found to be best performing genotype as tree mulberry with respect to different larval and cocoon parameters.
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