title: [Genetic diversity of different geographical populations of Oxya chinensis based on AFLP analysis].
abstract: In order to study the genetic diversity and genetic structure of populations, 7 populations of Oxya chinensis from 7 provinces (or cities) of China were analyzed using AFLP technique. A total of 336 reproducible bands were amplified with 7 primer combinations from 128 individuals. Two hundred and ninety-two bands (86.90%) were polymorphic. High genetic diversity was found among O. chinensis populations and Wanning population had higher genetic diversity than other populations. Mantel test (r=0.27, P=0.89) suggested that there was no significant association between genetic distance and geographic distance. Remarkable genetic differentiation was found among populations. Unweighted pair group method average (UPGMA) tree showed that the 7 O. chinensis populations were divided into 3 groups: Changping of Beijing, Tai-yuan of Shanxi and Jining of Shandong populations in the north; Hanzhong of Shaanxi, Changsha of Hunan and Laibin of Guangxi populations in the south; and Wanning of Hainan population. Principal component analysis indicated significant genetic differentiation of the north and the south populations and island and continent populations existed in the 7 O. chinensis populations because of geographic isolation.
authors.affiliation: School of Life Science and Technology, Shanxi University, Taiyuan 030006, China. mjoyxx@sina.com
authors.forename: Jin
authors.initials: J
authors.lastname: Ma
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Wen-Min
authors.initials: WM
authors.lastname: Long
authors.forename: Wei-Wei
authors.initials: WW
authors.lastname: An
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Guo
authors.forename: En-Bo
authors.initials: EB
authors.lastname: Ma
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis; D000818:Animals; D002681:China; D014644:Genetic Variation; D006110:Grasshoppers / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D011110:Polymorphism, Genetic