【目的】分析24份金花茶组植物种质资源的遗传多样性和亲缘关系,为金花茶组植物种质资源的鉴定和杂交育种提供参考依据。【方法】以毛瓣金花茶和夏石金花茶DNA样品进行引物筛选,从50条iPBS(Inter primer binding site)引物中筛选出稳定...【目的】分析24份金花茶组植物种质资源的遗传多样性和亲缘关系,为金花茶组植物种质资源的鉴定和杂交育种提供参考依据。【方法】以毛瓣金花茶和夏石金花茶DNA样品进行引物筛选,从50条iPBS(Inter primer binding site)引物中筛选出稳定、清晰的引物对所有供试材料进行PCR扩增,利用非加权平均距离法(UPGMA)构建系统发育进化树,采用iPBS分子标记技术分析其遗传多样性。【结果】从50条iPBS引物中筛选出10条多态性高、重复性好的引物,在24份金花茶组植物种质资源中共扩增出280条条带,平均每条引物扩增条带数为28条,多态性条带268条,多态性比率为92.68%,平均等位基因数(Na)、有效等位基因数(Ne)、Nei's基因多样性指数(H)和Shannon多样性信息指数(I)分别为1.9571、1.3544、0.2332和0.3767,表明金花茶组植物种质资源具有丰富的遗传多样性;24份金花茶组植物种质资源的遗传相似系数为0.543~0.836,在遗传相似系数0.680处,可将24份金花茶组植物种质资源聚为3组。【结论】iPBS分子标记多态性高,重复性好,便于操作,能有效进行金花茶组植物种质资源的遗传多样性分析,可供金花茶种质资源的品种鉴定、亲缘关系分析和分子辅助育种参考应用。展开更多
试验建立并优化了柿属植物的iPBS（inter Primer Band Site）标记PCR反应体系。最佳反应体系为1xEs Taq MasterMix,60ng DNA模板,10μmol/L终引物浓度,总体积12μL。共筛选出18个多态性较好的引物。基于iPBS标记的UPGMA分析结果与前人一...试验建立并优化了柿属植物的iPBS（inter Primer Band Site）标记PCR反应体系。最佳反应体系为1xEs Taq MasterMix,60ng DNA模板,10μmol/L终引物浓度,总体积12μL。共筛选出18个多态性较好的引物。基于iPBS标记的UPGMA分析结果与前人一致,iPBS标记更简单、经济,可用于柿属植物种质资源的多样性评价和种质鉴定。展开更多
"Wu zhu yu", which is obtained from the dried unripe fruits of Tetradium ruticarpum(A. Jussieu) T. G. Hartley, has been used as a traditional Chinese medicine for treatment of headaches, abdominal colic, and..."Wu zhu yu", which is obtained from the dried unripe fruits of Tetradium ruticarpum(A. Jussieu) T. G. Hartley, has been used as a traditional Chinese medicine for treatment of headaches, abdominal colic, and hypertension for thousands of years. The present study was designed to assess the molecular genetic diversity among 25 collected accessions of T. ruticarpum(Wu zhu yu in Chinese) from different areas of China, based on inter-primer binding site(i PBS) markers and inter-simple sequence repeat(ISSR) markers. Thirteen ISSR primers generated 151 amplification bands, of which 130 were polymorphic. Out of 165 bands that were amplified using 10 iPBS primers, 152 were polymorphic. The iPBS markers displayed a higher proportion of polymorphic loci(PPL = 92.5%) than the ISSR markers(PPL = 84.9%). The results showed that T. ruticarpum possessed high loci polymorphism and genetic differentiation occurred in this plant. The combined data of iPBS and ISSR markers scored on 25 accessions produced five clusters that approximately matched the geographic distribution of the species. The results indicated that both iPBS and ISSR markers were reliable and effective tools for analyzing the genetic diversity in T. ruticarpum.展开更多
Walking into the Institute of Plateau Biology(IPB in short)in Lhasa,Xizang,vice director Yang Le exchanged pleasantries with the guard in fluent Tibetan.Originally from Hunan Province,he has worked and lived here in X...Walking into the Institute of Plateau Biology(IPB in short)in Lhasa,Xizang,vice director Yang Le exchanged pleasantries with the guard in fluent Tibetan.Originally from Hunan Province,he has worked and lived here in Xizang for over 20 years."Now I see Xizang as my home,"he said with a smile.展开更多
文摘【目的】分析24份金花茶组植物种质资源的遗传多样性和亲缘关系,为金花茶组植物种质资源的鉴定和杂交育种提供参考依据。【方法】以毛瓣金花茶和夏石金花茶DNA样品进行引物筛选,从50条iPBS(Inter primer binding site)引物中筛选出稳定、清晰的引物对所有供试材料进行PCR扩增,利用非加权平均距离法(UPGMA)构建系统发育进化树,采用iPBS分子标记技术分析其遗传多样性。【结果】从50条iPBS引物中筛选出10条多态性高、重复性好的引物,在24份金花茶组植物种质资源中共扩增出280条条带,平均每条引物扩增条带数为28条,多态性条带268条,多态性比率为92.68%,平均等位基因数(Na)、有效等位基因数(Ne)、Nei's基因多样性指数(H)和Shannon多样性信息指数(I)分别为1.9571、1.3544、0.2332和0.3767,表明金花茶组植物种质资源具有丰富的遗传多样性;24份金花茶组植物种质资源的遗传相似系数为0.543~0.836,在遗传相似系数0.680处,可将24份金花茶组植物种质资源聚为3组。【结论】iPBS分子标记多态性高,重复性好,便于操作,能有效进行金花茶组植物种质资源的遗传多样性分析,可供金花茶种质资源的品种鉴定、亲缘关系分析和分子辅助育种参考应用。
文摘试验建立并优化了柿属植物的iPBS（inter Primer Band Site）标记PCR反应体系。最佳反应体系为1xEs Taq MasterMix,60ng DNA模板,10μmol/L终引物浓度,总体积12μL。共筛选出18个多态性较好的引物。基于iPBS标记的UPGMA分析结果与前人一致,iPBS标记更简单、经济,可用于柿属植物种质资源的多样性评价和种质鉴定。
基金supported by the National Science and Technology Major Projects for"Major New Drugs Innovation and Development" and the"Chinese Herbal Medicine Seeds and Seedlings Planting(breeding)Standard Platform Topics"(No.2012ZX09304006)
文摘"Wu zhu yu", which is obtained from the dried unripe fruits of Tetradium ruticarpum(A. Jussieu) T. G. Hartley, has been used as a traditional Chinese medicine for treatment of headaches, abdominal colic, and hypertension for thousands of years. The present study was designed to assess the molecular genetic diversity among 25 collected accessions of T. ruticarpum(Wu zhu yu in Chinese) from different areas of China, based on inter-primer binding site(i PBS) markers and inter-simple sequence repeat(ISSR) markers. Thirteen ISSR primers generated 151 amplification bands, of which 130 were polymorphic. Out of 165 bands that were amplified using 10 iPBS primers, 152 were polymorphic. The iPBS markers displayed a higher proportion of polymorphic loci(PPL = 92.5%) than the ISSR markers(PPL = 84.9%). The results showed that T. ruticarpum possessed high loci polymorphism and genetic differentiation occurred in this plant. The combined data of iPBS and ISSR markers scored on 25 accessions produced five clusters that approximately matched the geographic distribution of the species. The results indicated that both iPBS and ISSR markers were reliable and effective tools for analyzing the genetic diversity in T. ruticarpum.
文摘Walking into the Institute of Plateau Biology(IPB in short)in Lhasa,Xizang,vice director Yang Le exchanged pleasantries with the guard in fluent Tibetan.Originally from Hunan Province,he has worked and lived here in Xizang for over 20 years."Now I see Xizang as my home,"he said with a smile.
