International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Studies on the Utilization of Bivoltine Foundation Cross Males in the Preparation of Cross Breed Eggs of the Silkworm, Bombyx mori L.

  • Rajanna, K.L. (Egg Production Technology Division, Silkworm Seed Technology Laboratory) ;
  • Reddy, G. Vemananda (Reproductive Physiology Division, Silkworm Seed Technology Laboratory)
  • Received : 2012.02.25
  • Accepted : 2012.12.26
  • Published : 2012.12.31
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Abstract

In order to study the feasibility of utilizing bivoltine foundation cross (FC2) males of the silkworm as male components with Pure Mysore (PM), six foundation crosses viz,CSR2 x CSR27, CSR27 x CSR2, CSR27 x CSR50, CSR50 x CSR27, CSR2 x CSR50 and CSR50 x CSR2 along with CSR2 pure breed were assessed for performance of parental crop,grainage, rearing and reeling performance. The foundation crosses exhibited better performance than CSR2 as a parental crop and male component which resulted in higher egg recovery. Though there was not much difference between PM crossed with FC2 and CSR2 males pertaining to important bioassay parameters, PM x CSR2 exhibited superiority in reeling traits particularly with reelability and raw silk %. This study reveals that FC2 seed cocoons can be utilized during exigency when there is a dearth for CSR2 seed cocoons but not regularly.

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References

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