薏苡属(CoixL.)2种1变种的遗传多样性及亲缘关系的初步分析  

Analysis of genetic diversity and taxonomic relations among two species and one varity of \%Coix \%L.

作　　者：马建霞[1] 潘泽惠[1] 刘心恬[1] 於虹[1] 

机构地区：[1]江苏省中国科学院植物研究所,南京210014

出　　处：《植物资源与环境》1999年第4期11-16,共6页Journal of Plant Resources and Environment

基　　金：国家自然科学基金资助项目 !(编号 :3 9670 0 87)

摘　　要：利用垂直板型聚丙烯酰胺凝胶电泳技术,检测了薏苡属(CoixL.)2种1变种:薏苡(CoixlacrymajobiL.)6个居群、念珠薏苡(C.lacrymajobivar.maximaMakino)3个居群和薏米(C.chinensisTod.)2个居群共11个居群5个酶系统6个位点上9个等位基因的分布情况,结果表明:薏苡、念珠薏苡和薏米的遗传多样性水平普遍较低,每个位点等位基因平均数(A)分别为12,11和12;多态位点百分数(P)分别为167,113和167;平均期望杂合度(He)分别为006,003和007。聚类分析不能从遗传上将以上的2种1变种区分开。Allozyme variation at 6 loci encoding 5 enzymes was examined in 6, 3 and 2 populations across the ranges of \%Coix lacryma\|jobi \%L., \%C. lacryma\|Jobi \%var. \%maxima \%Makino and \%C. chinensis \%Tod., respectively, using vertical slab polyacrymide gel electrophoresis. The result indicated that all three species are genetically depauperate in their population: mean number of alleles per locus (A) is 1.2, 1.1 and 1.2; percentage of loci polymopholicJ. Plant Resour. & Environ. 1999, 8(4): 11～16 Allozyme variation at 6 loci encoding 5 enzymes was examined in 6, 3 and 2 populations across the ranges of \%Coix lacryma\|jobi \%L., \%C. lacryma\|Jobi \%var. \%maxima \%Makino and \%C. chinensis \%Tod., respectively, using vertical slab polyacrymide gel electrophoresis. The result indicated that all three species are genetically depauperate in their population: mean number of alleles per locus (A) is 1.2, 1.1 and 1.2; percentage of loci polymopholic& Environ. 1999, 8(4): 11～16 Allozyme variation at 6 loci encoding 5 enzymes was examined in 6, 3 and 2 populations across the ranges of \%Coix lacryma\|jobi \%L., \%C. lacryma\|Jobi \%var. \%maxima \%Makino and \%C. chinensis \%Tod., respectively, using vertical slab polyacrymide gel electrophoresis. The result indicated that all three species are genetically depauperate in their population: mean number of alleles per locus (A) is 1.2, 1.1 and 1.2; percentage of loci polymopholicEnviron. 1999, 8(4): 11～16 Allozyme variation at 6 loci encoding 5 enzymes was examined in 6, 3 and 2 populations across the ranges of \%Coix lacryma\|jobi \%L., \%C. lacryma\|Jobi \%var. \%maxima \%Makino and \%C. chinensis \%Tod., respectively, using vertical slab polyacrymide gel electrophoresis. The result indicated that all three species are genetically depauperate in their population: mean number of alleles per locus (A) is 1.2, 1.1 and 1.2; percentage of loci polymopholic1999, 8(4): 11～16 Allozyme variation at 6 loci encoding 5 enzymes was examined in 6, 3 and 2 populations acros

关 键 词：等位酶 薏苡属 居群 亲缘关系 遗传多样性 

分 类 号：S567.219[农业科学—中草药栽培]