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Preliminary Report on Breeding of Coarse Size Variety ${CU_1}{\times}{CU_2}$ of Bombyx mori L
Zhao, Yuan,Wu, Yangchun,Qian, Heying,He, Yiyuan,He, Simei Korean Society of Sericultural Science 2004 International Journal of Industrial Entomology Vol.9 No.1
A number of Chinese, Japanese and European silkworm strains with coarse size filament were used for breeding the coarse size variety. Through cross breeding combined with pedigree selection within thirteen generations, a pair of coarse size silkworm variety, named ${CU_1}{\times}{CU_2}$, was obtained after five years. Laboratory trials showed that the filament size of its 4F_1$ hybrid was over 4.3 D, and the other economic characters were also good.
Preliminary Report on Breeding of Coarse Size Variety CU1 x CU2 of Bombyx mori L
Yuan Zhao,Yangchun Wu,Heying Qian,Yiyuan He,Simei He 한국잠사학회 2004 International Journal of Industrial Entomology Vol.9 No.1
A number of Chinese, Japanese and European silkworm strains with coarse size filament were used for breeding the coarse size variety. Through cross breeding combined with pedigree selection within thirteen generations, a pair of coarse size silkworm variety, named CU1×CU2, was obtained after five years. Laboratory trials showed that the filament size of its F1 hybrid was over 4.3 D, and the other economic characters were also good.
Kun Gao,Xiang Yuan Deng,Meng Ke Shang,Heying Qian,Xijie Guo 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.3
The cDNA of a biphenyl hydrolase-like (BPHL) protein from Bombyx mori was cloned via rapid amplification of cDNA ends and submitted to GenBank under accession number JN020647. The full-length BmBPHL cDNA was 1161 bp, with four exons and three introns. It consisted of a 208 bp 5′-terminal untranslated region (UTR) and a 191 bp 3′-UTR with three polyadenylation signal sequences AATAAA and a poly(A) tail. The BmBPHL cDNA encodes a 253–amino acid polypeptide with a theoretical isoelectric point of 8.67 and a predicted molecular weight of 28.9 kDa. The deduced amino acid sequence of BmBPHL contained an abhydrolase_6 domain and the Gly-X-Ser-X-Gly motif that is characteristic of serine hydrolases. Sequence comparison showed that BmBPHL is 51% identical to Tribolium castaneum BPHL and 50% identical to Nasonia vitripennis BPHL. Phylogenetic analysis revealed that BmBPHL is grouped with insect BPHL proteins, separating from vertebrate BPHLs. The BmBPHL mRNA transcripts were mainly detected in hemolymph and fat body using fluorescent quantitative real-time PCR. In addition, infectionwith B. mori cytoplasmic polyhedrosis virus (BmCPV) upregulated the relative BmBPHL expression in the hemolymph and midgut. Therefore, BmBPHL may have an important function in the response of silkworms to BmCPV infection.