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- W2343626305 abstract "Genetic diversity of six populations of Dioscorea collettii Hook.f.and five populations of D.collettii var.hypoglauca(Palibin) C.T.Ting et al.was studied by RAPD molecular marker,and cluster analysis of eleven populations was carried out by UPGMA method based on genetic similarity coefficient.The results show that 170 bands are amplified with fourteen oligonucleotide primers,in which there are 161 polymorphic bands with a percentage as high as 94.71%.The change range of polymorphic band percentage of five populations of D.collettii var.hypoglauca(81.25%-89.29%) is slightly higher than that of six populations of D.collettii(82.00%-84.21%).The effective allele number(Ne),Nei' s gene diversity index(h) and Shannon's diversity index(I) among D.collettii var.hypoglauca populations are 1.368 5,0.238 4 and 0.376 3,respectively,and those of D.collettii are 1.331 1,0.197 2 and 0.298 3,respectively.The gene differentiation coefficient(Gst) is 0.122 8 and gene flow(Nm) is 3.570 7 between D.collettii and D.collettii var.hypoglauca.The genetic similarity coefficient is 0.922 3 and the genetic distance is 0.080 9 between them,in which,the genetic distance between D.collettii var.hypolglauca population from Lushan of Jiangxi and D.collettii population from Lijiang of Yunnan is the farthest with a value of 0.693 1,while that between D.collettii populations from Mengzi and Jinghong of Yunnan is the nearest with a value of 0.219 4.According to cluster analysis result,the eleven populations can be divided into four groups.In which,all D.collettii populations and D.collettii var.hypoglauca population from Lin'an of Zhejiang are clustered to the first group,D.collettii var.hypoglauca populations from Nanchuan of Chongqing and Hengshan of Hu'nan are clustered to the second group,and D.collettii var.hypoglauca populations from Yongshun of Hu'nan and Lushan of Jiangxi are respectively clustered to independently single groups.The results prove that the relationship of the two taxa is proto-variety and variety,but the incomplete differentiation in variant level still exists." @default.
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- W2343626305 date "2010-01-01" @default.
- W2343626305 modified "2023-09-23" @default.
- W2343626305 title "Study on genetic diversity of different populations of Dioscorea collettii and D. collettii var. hypoglauca based on RAPD marker" @default.
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