广西北部平话汉族群体遗传结构的研究

发布时间：2018-01-03 21:39

本文关键词：广西北部平话汉族群体遗传结构的研究　出处：《广西医科大学》2008年硕士论文　论文类型：学位论文

【摘要】： 目前,对汉族群体遗传结构的研究已经日趋完善和深入,除平话人外的汉族九大支系人群Y染色体和mtDNA的遗传结构都已经有了相关研究和报道,他们无一例外的都显示了汉族在遗传结构上的高度一致性。平话人作为汉族一支古老支系,杂居于侗台、苗瑶等南方少数民族人口占局部优势的广西及其周边地区,其遗传结构的归属问题越来越受到关注。本文对中国广西壮族自治区北部贺州县、富川县、罗城县、金秀县和武宣县五个地区的平话汉族人群及其周边部分壮族、侗族、仫佬族、拉伽人和瑶族共470份个体(包括195个男性),分别进行了mtDNA和Y染色体单倍群的分型,结果发现桂北平话人群的Y染色体单倍群具有高频的南方原住民族单倍型K,O~*,O2a~*,仅罗城和金秀县平话人保留了汉族常见的O3a5单倍型。在mtDNA单倍群的分型方面,平话人群高频单倍型是B4a,B5a,M~*,F1a,M7b1和N~*,与其周边原住民族和南方少数民族尤其是侗台语系高频单倍型很接近。根据平话人群以及汉族其他支系和东亚其他民族群体的Y染色体和mtDNA单倍群数据所绘制的树型聚类图、主成分分析图、以及网络结构图分析结果显示,平话人在遗传结构上更靠近南方原住民族,而与汉族距离甚远。通过计算汉族群体和南方原住居民对平话人的遗传贡献率,更加证实了这种差距。因此,我们得出结论:桂北平话人在遗传结构上并非汉族的后裔,他们来自南方少数民族,是被汉族在语言文化、自身认同感上同化了的广西原住居民。在高度一致的汉族支系遗传结构中,平话支系是唯一的例外。
[Abstract]:At present, the research on Han population genetic structure has been increasingly improved and in-depth, in addition to the genetic structure of Pinghua people outside the Han population of Y chromosome and mtDNA nine branches have been related studies and reports, they invariably show a high degree of consistency in the genetic structure of the Han people. As an ancient Han Ping Branch in Taiwan, inhabited by the Miao and Yao Dong, southern minority population accounts for the local advantages of Guangxi and its surrounding areas, belong to the genetic structure has attracted more and more attention. In this paper China north of the Guangxi Zhuang Autonomous Region Hezhou County, Fuchuan County, Luocheng County, five areas of Jinxiu Pinghua Han county and Wuxuan county and the surrounding part of Zhuang, Dong, Mulam people, a total of 470 Ragas and Yao individual (including 195 male), respectively, were divided into type mtDNA and Y chromosome haplogroups, found the North Guangxi DIALEET population The Y chromosome haplogroup has high indigenous haplotypes K, O~*, O2a~*, Rochester and only Jinxiu County retained Pinghua common O3a5 haplotype in Han. Type mtDNA haplogroup, Pinghua population high frequency haplotypes is B4a, B5a, M~*, F1a, M7b1 and N~*, and its surrounding live nation and ethnic minorities in South China especially Dong Tai languages. According to the high frequency haplotype is very close to the population of Han and other drawing Pinghua branches and other East Asian ethnic groups and the Y chromosome haplogroup mtDNA data tree clustering, principal component analysis, and analysis the network structure diagram shows that the genetic structure of Pinghua people closer to the southern natives, and Han far from. By calculating the Han population and southern indigenous residents of the genetic contribution rate of Pinghua people, confirmed this gap. Therefore, we draw the conclusion: the North Guangxi DIALEET in. Transfer structure is not descended from the Han ethnic minorities, they are from the south, is in the Han language and culture, their own sense of identity on the assimilation of Guangxi original inhabitants. In the Han lineage genetic structure is highly consistent, Pinghua branch is the only exception.

【学位授予单位】：广西医科大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：R394

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