Selection of polyvoltine breeds and polyvoltine × bivoltine hybrids of the Silkworm, Bombyx mori L.

Abstract : Selection of polyvoltine breeds and polyvoltine × bivoltine hybrids of the silkworm, Bombyx mori L. was carried out utilizing subordinate function indices method of Gower (1971). Out of six polyvoltine breeds, AGL5 ranked first exhibiting maximum cumulative subordinate function indices value of 10.95 for eleven characters followed by AGL3 which exhibited higher cumulative subordinate function indices value of 7.45 whereas among thirty polyvoltine × bivoltine hybrids, AGL5 × CSR2 ranked first exhibiting maximum cumulative subordinate function indices values of 10.40 followed by AGL3 × CSR2 exhibiting cumulative subordinate function indices values of 9.70. Seven polyvoltine × bivoltine hybrids viz., AGL2 × CSR12, AGL4 × CSR2, AGL2 × CSR4, AGL3 × CSR3, AGL2 × CSR2, AGL5 × CSR12 and AGL1 × CSR2 were also found promising which exhibited cumulative subordinate function indices values of 7.47, 7.44, 7.43, 7.30, 7.29, 7.27 and 7.15, respectively. Importance of application of subordinate function indices method for the identification of silkworm breeds and hybrids has been discussed
Keyword : Bombyx mori, performance, polyvoltine × bivoltine hybrids, silkworm breed, subordinate function indices
Author(s) : , R. Singh, R. Nirupama
Downloads : 1071


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