Selection of promising bivoltine breeds and hybrids of the mulberry silkworm, Bombyx mori L.

Abstract :

Selection of promising bivoltine breeds and hybrids of the mulberry silkworm, Bombyx mori L. was carried out utilizing subordinate function indices method of Gower (1971). Out of six bivoltine breeds, DNB1 ranked first exhibiting maximum cumulative subordinate function indices value of 8.94 for eleven characters followed by DNB6 which exhibited higher cumulative subordinate function indices value of 7.14. Among twenty five bivoltine hybrids, DNB6 × CSRranked first exhibiting maximum cumulative subordinate function indices values of 8.66 followed by DNB1 × CSR2 exhibiting cumulative subordinate function indices values of 8.53. Four bivoltine hybrids viz., DNB1 × CSR4, DNB7 × CSR2,  CSR2 × CSR4 and DNB4 × CSRwere found promising which exhibited cumulative subordinate function indices values of 8.40, 7.94, 7.34 and7.24, respectively. Application of subordinate function indices method for the selection of silkworm breeds and hybrids has been discussed.


Keyword :

Bivoltine hybrids, Bombyx mori, performance, silkworm breed, subordinate function indices


Author(s) : Singh, R., Gangopadhyay, D., Nirupama, R.
Downloads : 1333
Published Issue : 2015 Vol. 10 Number 1


2015 Vol. 10 Number 1