International Journal of Multidisciplinary Research and Development

International Journal of Multidisciplinary Research and Development


International Journal of Multidisciplinary Research and Development
International Journal of Multidisciplinary Research and Development
Vol. 7, Issue 8 (2020)

Synthesis of improved crossbreeds (ICB) of mulberry silkworm (Poly x Bivoltine) of Bombyx mori L. for commercial exploitation in tropical regions


SV Seshagiri, PJ Raju

Indian Sericulture Industry is crossbreed oriented which amounts to be more than 80% of mulberry raw silk production. Due to certain field constraints like economic, social compulsions and agro-climatic conditions; still there is a prominence for crossbreeds which would continue to hold a place of significance. Hence, to meet the local requirement i.e. the tropical stress of Andhra Pradesh and marginal farmers, twenty new hybrid combinations were tested in Line x Tester method involving five promising polyvoltine oval lines viz., MF4, APMV2, APMV3, APMV4, and APMV5 and four bivoltine silkworm breeds viz., BV105, BV115, BVFC1 and BVS8 as testers. These hybrids were reared under standard rearing conditions to evaluate their performance. Data for eight economically important economic traits viz., fecundity, hatching %, cocoon yield per 10,000 larvae by number, cocoon yield per 10,000 larvae by weight, survival rate, cocoon weight, cocoon shell weight and cocoon shell ratio was recorded. The relative merit of the hybrids under study was assessed based on Evaluation Index and Subordinate Function methods. Based on the both evaluation index methods, two hybrid combinations such as MF4 x BVFC1 and APMV2 x BVFC1 were selected for further laboratory trials.
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How to cite this article:
SV Seshagiri, PJ Raju. Synthesis of improved crossbreeds (ICB) of mulberry silkworm (Poly x Bivoltine) of Bombyx mori L. for commercial exploitation in tropical regions. International Journal of Multidisciplinary Research and Development, Volume 7, Issue 8, 2020, Pages 141-146
International Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research and Development