International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Effect of High Temperature and High Humidity on the Quantitative Traits of Parents, Foundation Crosses, Single and Double Hybrids of Bivoltine Silkworm, Bombyx mori L.

  • Kumar, N.Suresh (Central Sericultural Research and Training Institute, Mysore-570 008, India.) ;
  • Basavaraja, H.K. (Central Sericultural Research and Training Institute, Mysore-570 008, India.) ;
  • Reddy, N.Mal (Central Sericultural Research and Training Institute, Mysore-570 008, India.) ;
  • Dandin, S.B. (Central Sericultural Research and Training Institute, Mysore-570 008, India.)
  • Published : 2003.06.01
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Abstract

The hot climatic conditions prevailing particularly in summer are not conducive to rear these high yielding bivoltine hybrids throughout the year, In order to select efficiently the breeds with high temperature tolerance, it is very important to analyze critically the impact of high temperature on many silk yielding attributes of silkworm races. Keeping the above in view, the present study was undertaken to determine the effect of high temperature $(36 {\pm} 1^{\circ}C)$ and high humidity $(80 {\pm} 5% Relative Humidity)$ on the rearing performance of pure races, foundation crosses, single hybrids and double hybrids of bivoltine silkworm, Bombyx mori L. The robust bivoltine breeds, CSR18, CSR19, 8HT and 5HT, eight foundation crosses, eight single hybrids and eight double hybrids involving these breeds were chosen as materials in this study.

Keywords

References

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