中文摘要
开展宁夏道地中药材胡卢巴和苦豆子种质资源遗传多样性研究,有助于了解其遗传基础,对发展宁夏中药产业具有重要意义。通过对这两种种质资源生物学性状、染色体核型、主要等位酶和RAPD分子标记的研究,得到以下结果:1、胡卢巴, 2n=16,42份种质资源的12个主要生物学性状差异显著。5个等位酶共检测到24个位点41个等位基因。基因分化系数(GST)为0.024。 RAPD标记结果表明各种质资源间的遗传距离在0.02-0.70之间。等位酶和RAPD聚类分析显示国外胡卢巴和国内胡卢巴亲缘关系较远,国内其它省份的胡卢巴与宁夏胡卢巴的亲缘关系较近,遗传多样性主要维持在各种质资源内的不同单株间。2、苦豆子, 2n=32,23份苦豆子种子形态特征和发芽特性各异。5个等位酶共检测到26个位点67个等位基因。杂合基因多样度比率(FST)为0. 427,表明42.7%的遗传变异来源于不同居群间基因的差异,居群间基因交流不够频繁,因此要保留较多的苦豆子居群才能维持其遗传多样性水平。RAPD标记结果显示22份苦豆子遗传距离在0.07-0.49之间。聚类分析未能分辨出不同地域苦豆子居群间的亲缘关系。
英文摘要
Trigonella foenum-graecum L. and Sophora alopecuroides L. are Ningxia’s two kinds of important Chinese traditional medicine resources having region features, which are two major resources to be developed in the project of constructing Ningxia’s Chinese traditional medicines base in Ningxia’s “Eleventh Five-year” plan. Researching the genetic diversity of germplasm resources will be helpful to discover their hereditary background and can prevent the resources losing, which is valuable to develop Ningxia’s Chinese traditional medicine industry. The botanical and biological characters, karyotype, basal allozyme and RAPD molecular markers of two germplasm resources were surveyed. The results as follows: 1. Fenugreek(T. foenum-graecum L.), 2n=16, There were significant differences in 12 major biological characters of 42 Fenugreek germplasm resources. Of the 12 enzyme systems prescreened, 5 coding for 24 loci and 41 alleles were resolved, and the coefficient of gene differentiation (GST) was 0.024, that is about 97.6% of genetic variation was attributed within Fenugreek germplasm resources, and only 2.4% were contributed between different Fenugreek germplasm resources. Mean Eucliden distance of single tested Fenugreek in RAPD was ranged from 0.02 to 0.70. Cluster analysis of allozyme and RAPD indicated that the rel
结题摘要
开展宁夏道地中药材胡卢巴和苦豆子种质资源遗传多样性研究,有助于了解其遗传基础,对发展宁夏中药产业具有重要意义。通过对这两种种质资源生物学性状、染色体核型、主要等位酶和RAPD分子标记的研究,得到以下结果:1、胡卢巴, 2n=16,42份种质资源的12个主要生物学性状差异显著。5个等位酶共检测到24个位点41个等位基因。基因分化系数(GST)为0.024。 RAPD标记结果表明各种质资源间的遗传距离在0.02-0.70之间。等位酶和RAPD聚类分析显示国外胡卢巴和国内胡卢巴亲缘关系较远,国内其它省份的胡卢巴与宁夏胡卢巴的亲缘关系较近,遗传多样性主要维持在各种质资源内的不同单株间。2、苦豆子, 2n=32,23份苦豆子种子形态特征和发芽特性各异。5个等位酶共检测到26个位点67个等位基因。杂合基因多样度比率(FST)为0. 427,表明42.7%的遗传变异来源于不同居群间基因的差异,居群间基因交流不够频繁,因此要保留较多的苦豆子居群才能维持其遗传多样性水平。RAPD标记结果显示22份苦豆子遗传距离在0.07-0.49之间。聚类分析未能分辨出不同地域苦豆子居群间的亲缘关系。
