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International Journal of Zoology and Applied Biosciences Research Article
Field evaluation of multi-viral diseases tolerant bivoltine silkworm hybrid of Bombyx mori l. (Lepidoptera: Bombycidae)
Kusuma L, Satish L, Raveendranath H R, Madhusudan K N, Mary Josepha Shery A V, Moorthy S M, Manjunatha G R, Sivaprasad V
Year : 2024 | Volume: 9 | Issue: 2 | Pages: 37-39
Received on: 12/01/2024
Revised on: 19/01/2024
Accepted on: 18/02/2024
Published on: 03/03/2024
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Kusuma L, Satish L, Raveendranath H R, Madhusudan K N, Mary Josepha Shery A V, Moorthy S M, Manjunatha G R, Sivaprasad V( 2024).
Field evaluation of multi-viral diseases tolerant bivoltine silkworm hybrid of Bombyx mori l. (Lepidoptera: Bombycidae)
. International Journal of Zoology and Applied Biosciences, 9( 2), 37-39.
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Abstract
Bombyx mori Densonucleosis virus (BmDV), Bombyx mori Infectious flacherie virus (BmIFV) and Bombyx mori nuclear polyhedrosis virus (BmNPV) infection to silkworms causes major sericulture crop loss. The multi-viral diseases tolerant bivoltine silkworm double hybrid, RDIN1, developed through marker-assisted selection was field evaluated by rearing 20,000 dfls at different location and season. RDIN1, had better pupation (94.8%) compared to control, FC1 X FC2 (91.5%) at farmers’ level with 4 % significant improvement. Average Cocoon yield of RDIN1 (71.2%) was better compared to FC1 X FC2 (69.3%) in unfavourable conditions. Other parameters such as cocoon weight, shell weight, shell percentage, reelability, filament length, raw silk, denier, neatness had also significant difference between RDIN1 and FC1 x FC2. The RDIN1 is expected to reduce cocoon crop losses invariably due to viral infection and fetch more profit to sericulture farmers.
Keywords
Bombyx mori, Densonucleosis virus, Infectious flacherie virus, SSR marker, Nuclear polyhedrosis virus.
