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首页> 外文期刊>Biochemical Genetics >Microsatellite Polymorphisms in Cassava Landraces from the Cerrado Biome, Mato Grosso do Sul, Brazil
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Microsatellite Polymorphisms in Cassava Landraces from the Cerrado Biome, Mato Grosso do Sul, Brazil

机译：巴西南马托格罗索州Cerrado Biome地区木薯地方种中的微卫星多态性

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摘要

Using nine microsatellite loci, we investigated genetic structure and diversity in 83 Brazilian cassava accessions, including several landraces, in the Cerrado biome in Mato Grosso do Sul, Brazil. All nine loci were polymorphic, averaging 6.00 alleles per locus. Treating each of seven municipalities as a cassava group or population, they averaged 3.5 alleles per locus, with 97% polymorphic loci, high values for observed heterozygosity (0.32) and gene diversity (0.56). Total genetic variability was high (0.668), and most of this genetic variability was concentrated within municipalities (0.577). Cluster and structure analyses divided accessions into two major clusters or populations (K = 2). Also, a significant genetic versus geographic correlation was found (r = 0.4567; P < 0.0260). Migratory routes in the Cerrado are considered main contributors to the region’s high cassava diversity and spatial genetic structure, amplifying interactions between traditional farmers and the evolutionary dynamics of this crop.
机译：我们使用9个微卫星基因座，研究了巴西南马托格罗索州塞拉多生物群落中83个巴西木薯种的遗传结构和多样性，其中包括几个地方品种。所有九个基因座均为多态性，每个位点平均6.00个等位基因。将七个城市中的每一个视为木薯族或木薯，他们平均每个位点有3.5个等位基因，具有97％的多态位点，观察到的杂合度高（0.32），基因多样性高（0.56）。总遗传变异性很高（0.668），而大多数遗传变异性集中在市政当局内部（0.577）。聚类和结构分析将种质分为两个主要的聚类或种群（K = 2）。而且，发现显着的遗传与地理相关性（r = 0.4567； P <0.0260）。塞拉多的迁徙路线被认为是该地区高木薯多样性和空间遗传结构的主要贡献者，这加剧了传统农民与该作物进化动态之间的相互作用。

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