化性是家蚕的重要生理特性,受第6染色体上的化性主基因V及Z染色体上的伴性成熟基因Lm的影响,伴性早熟基因Lme促进家蚕化性趋向多化性。采用多化性家蚕品种nistari和二化性家蚕品种p50配制BC1M群体[p50×(nistari×p50)],选择其...化性是家蚕的重要生理特性,受第6染色体上的化性主基因V及Z染色体上的伴性成熟基因Lm的影响,伴性早熟基因Lme促进家蚕化性趋向多化性。采用多化性家蚕品种nistari和二化性家蚕品种p50配制BC1M群体[p50×(nistari×p50)],选择其中734头产非滞育卵的雌蛾个体作为定位群体,以其基因组DNA为模板进行SSR标记的PCR扩增,应用高分辨率熔解曲线分析(HRM)技术进行各个标记位点的基因型分析,绘制出遗传总距离为12.91 c M的分子遗传连锁图,Lme基因位于标记s2734-299和s2734-525之间,与2个标记的遗传距离均为0.41 c M。s2734-299和s2734-525间的物理距离为226 kb,其间有18个预测基因,有2个属于DNA序列特异性结合转录因子基因,但尚不能判定这2个基因是否与Lme有明确的关联。展开更多
Beyond the commonly known proteins built silk fibres--fibroin and sericin, there are almost 300 bioactive proteins in the silkworm haemolymph. The aim of this work was to present bioactive compounds obtained from the ...Beyond the commonly known proteins built silk fibres--fibroin and sericin, there are almost 300 bioactive proteins in the silkworm haemolymph. The aim of this work was to present bioactive compounds obtained from the silk fibre and isolated from the body of this insect, which may be used in medical and pharmacological applications. The most important are bioactive proteins. However, the juvenile stages of mulberry silkworm possess other very valuable active substances.展开更多
The recognition of biodiversity in different races and lines of silkworm (Bombyx mori) is very useful for breeding programs and production of high efficiency hybrids. In this study eight groups of silkworm were select...The recognition of biodiversity in different races and lines of silkworm (Bombyx mori) is very useful for breeding programs and production of high efficiency hybrids. In this study eight groups of silkworm were selected including 103, 107, Xihang 1 and 2 of Japanese origin and 104, 110, Koming 1 and 2 of Chinese origin. The activity levels of three enzymes including alkaline phosphatase, alanine aminotransferase and aspartate aminotransferase in haemolymph of fifth instar larva were measured. Moreover, the quantitative amount of total protein, cholesterol and glucose of haemolymph was evaluated.The data reveal that the activity level of measured macromolecules except for alkaline phosphatase were significantly different in all the groups. Hierarchical agglomerative clustering under UPGMA model separated line 104 from other groups. Two groups of Koming 1 and Xihang 1 had the most intergroup similarities.展开更多
文摘化性是家蚕的重要生理特性,受第6染色体上的化性主基因V及Z染色体上的伴性成熟基因Lm的影响,伴性早熟基因Lme促进家蚕化性趋向多化性。采用多化性家蚕品种nistari和二化性家蚕品种p50配制BC1M群体[p50×(nistari×p50)],选择其中734头产非滞育卵的雌蛾个体作为定位群体,以其基因组DNA为模板进行SSR标记的PCR扩增,应用高分辨率熔解曲线分析(HRM)技术进行各个标记位点的基因型分析,绘制出遗传总距离为12.91 c M的分子遗传连锁图,Lme基因位于标记s2734-299和s2734-525之间,与2个标记的遗传距离均为0.41 c M。s2734-299和s2734-525间的物理距离为226 kb,其间有18个预测基因,有2个属于DNA序列特异性结合转录因子基因,但尚不能判定这2个基因是否与Lme有明确的关联。
文摘Beyond the commonly known proteins built silk fibres--fibroin and sericin, there are almost 300 bioactive proteins in the silkworm haemolymph. The aim of this work was to present bioactive compounds obtained from the silk fibre and isolated from the body of this insect, which may be used in medical and pharmacological applications. The most important are bioactive proteins. However, the juvenile stages of mulberry silkworm possess other very valuable active substances.
文摘The recognition of biodiversity in different races and lines of silkworm (Bombyx mori) is very useful for breeding programs and production of high efficiency hybrids. In this study eight groups of silkworm were selected including 103, 107, Xihang 1 and 2 of Japanese origin and 104, 110, Koming 1 and 2 of Chinese origin. The activity levels of three enzymes including alkaline phosphatase, alanine aminotransferase and aspartate aminotransferase in haemolymph of fifth instar larva were measured. Moreover, the quantitative amount of total protein, cholesterol and glucose of haemolymph was evaluated.The data reveal that the activity level of measured macromolecules except for alkaline phosphatase were significantly different in all the groups. Hierarchical agglomerative clustering under UPGMA model separated line 104 from other groups. Two groups of Koming 1 and Xihang 1 had the most intergroup similarities.
