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RISS 인기검색어
- 검색키워드
- 저자 : ( H. U. Dar ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Note : Estimation of Gene Effects in Four Bivoltine Silkworm (Bombyx mori L.) Crosses
( G. N. Malik ),( T. P. Singh ),( S. Z. Haque Rufaie ),( M. Aijaz ),( H. U. Dar ) 한국잠사학회 2007 International Journal of Industrial Entomology Vol.8 No.1
Six generations (P1, P2, F1, BC1, BC2 and F2) of four bivoltine silkworm crosses (SKAU-R-1×Yakwei, SKAU-R-6×Yakwei, CSR2×CSR4 and SH6×NB4D2) were evaluated in a completely randomized block design with 5 replications for each treatment. The generation mean 2 in respect of 3 metric traits (single cocoon weight, single shell weight, and shell ratio %), were subjected to Cavallis joint scaling test. Additive dominance model was found to be adequate in CSR2×CSR4 and SH6×NB4D2 for single cocoon weight and shell weight and SKAU-R-6×Yakwei for shell ratio(%). Whereas, in rest of the crosses epistasis was evident in the traits under investigation. Magnitude of additive gene effect (d) was greater than dominance (h) in SH6×NB4D2 and SKUA-R-6×Yakwei for shell ratio (%) and in CSR2×CSR4 for shell weight. Thus selection for these traits in early segregating generations of these crosses would be effective for obtaining considerable genetic gain.
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Estimation of Gene Effects in Four Bivoltine Silkworm (Bombyx mori L.) Crosses
G. N. Malik,T. P. Singh,S. Z. Haque. Rufaie,M. Aijaz,H. U. Dar 한국잠사학회 2004 International Journal of Industrial Entomology Vol.8 No.1
Six generations (P1, P2, F1, BC1, BC2 and F2) of four bivoltine silkworm crosses (SKAU-R-1 ´ Yakwei, SKAU-R-6 ´ Yakwei, CSR2 ´ CSR4 and SH6 ´ NB4D2) were evaluated in a completely randomized block design with 5 replications for each treatment. The generation mean 2 in respect of 3 metric traits (single cocoon weight, single shell weight, and shell ratio %), were subjected to Cavallis joint scaling test. Additive dominance model was found to be adequate in CSR2 ´ CSR4 and SH6 ´ NB4D2 for single cocoon weight and shell weight and SKAU-R-6 ´ Yakwei for shell ratio (%). Whereas, in rest of the crosses epistasis was evident in the traits under investigation. Magnitude of additive gene effect (d) was greater than dominance (h) in SH6 ´ NB4D2 and SKUA-R-6 ´ Yakwei for shell ratio (%) and in CSR2 ´ CSR4 for shell weight. Thus selection for these traits in early segregating generations of these crosses would be effective for obtaining considerable genetic gain.
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Estimation of Gene Effects in Four Bivoltine Silkworm (Bombyx mori L.) Crosses
Malik, G.N.,Singh, T.P.,Rufaie, S.Z.Haque,Aijaz, M.,Dar, H.U. Korean Society of Sericultural Science 2004 International Journal of Industrial Entomology Vol.8 No.1
Six generations (P$_1$, P$_2$, F$_1$, BC$_1$, BC$_2$ and F$_2$) of four bivoltine silkworm crosses (SKAU-R-1 ${\times}$ Yakwei, SKAU-R-6 ${\times}$ Yakwei, CSR$_2$ ${\times}$ CSR$_4$ and SH$_{6}$${\times}$ NB$_4$D$_2$) were evaluated in a completely randomized block design with 5 replications for each treatment. The generation mean 2 in respect of 3 metric traits (single cocoon weight, single shell weight, and shell ratio %), were subjected to Cavallis joint scaling test. Additive dominance model was found to be adequate in CSR$_2$${\times}$CSR$_4$ and SH$_{6}$${\times}$ NB$_4$D$_2$ for single cocoon weight and shell weight and SKAU-R-6 ${\times}$ Yakwei for shell ratio(%). Whereas, in rest of the crosses epistasis was evident in the traits under investigation. Magnitude of additive gene effect (d) was greater than dominance(h) in SH$_{6}$${\times}$NB$_4$D$_2$ and SKUA-R-6${\times}$Yakwei for shell ratio (%) and in CSR$_2$${\times}$ CSR$_4$ for shell weight. Thus selection for these traits in early segregating generations of these crosses would be effective for obtaining considerable genetic gain. gain.
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