Shortlisting of promising silkworm breeds and hybrids of the silkworm, Bombyx mori L.

Abstract : Identification of promising silkworm breeds and hybrids was carried out utilizing various statistical tools viz, multiple traits evaluation indices, subordinate function indices, combining ability and hybrid vigour. Out of six multivoltine silkworm breeds, AGL5 was found promising exhibiting maximum values based on its performance, multiple traits evaluation indices, subordinate function indices and general combining ability exhibiting maximum values for seven characters viz., cocoon yield/10,000 larvae by weight, cocoon weight, cocoon shell weight, filament length, reelability, raw silk percentage and neatness followed by AGL3 which exhibited higher values for three characters viz., fecundity, cocoon shell percentage and raw silk percentage. Data revealed distinct superiority of two multivoltine × bivoltine hybrids viz., AGL3 × CSR2 and AGL5 × CSR2. AGL5 × CSR2 recorded maximum values for cocoon yield/10,000 larvae by weight and cocoon weight analyzed through all the statistical tools whereas maximum values were obtained for cocoon shell percentage, reelability and neatness. AGL3 × CSR2 exhibited comparatively higher values for cocoon yield/10,000 larvae by weight, cocoon weight and cocoon shell weight analyzed through all the methods except special combining ability (SCA)
Keyword : Bombyx mori, Hybrid vigour, Combining ability, Multiple traits evaluation indices, Performance, Silkworm breed and hybrids, Subordinate function indices
Author(s) : , R. Singh, R. Nirupama
Downloads : 968


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