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首页> 外文期刊>Biochemical Genetics >Microsatellite analysis of genetic variation and population genetic differentiation in autotetraploid and diploid rice.
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Microsatellite analysis of genetic variation and population genetic differentiation in autotetraploid and diploid rice.

机译：自身传感液和二倍体稻遗传变异与群体遗传分化的微卫星分析。

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Genetic diversity and population genetic structure of autotetraploid and diploid populations of rice collected from Chengdu Institute of Biology, Chinese Academy of Sciences, were studied based on 36 microsatellite loci. Among 50 varieties, a moderate to high level of genetic diversity was observed at the population level, with the number of alleles per locus (Ae) ranging from 2 to 6 (mean 3.028) and polymorphism information content ranging from 0.04 to 0.76 (mean 0.366). The expected heterozygosity (He) varied from 0.04 to 0.76 (mean 0.370) and Shannon's index (I) from 0.098 to 1.613 (mean 0.649). The autotetraploid populations showed slightly higher levels of Ae, He, and I than the diploid populations. Rare alleles were observed at most of the simple sequence repeat loci in one or more of the 50 accessions, and a core fingerprint database of the autotetraploid and diploid rice was constructed. The F-statistics showed genetic variability mainly among autotetraploid populations rather than diploid populations (Fst = 0.066). Cluster analysis of the 50 accessions showed four major groups. Group I contained all of the autotetraploid and diploid indica maintainer lines and an autotetraploid and its original diploid indica male sterile lines. Group II contained only the original IR accessions. Group III was more diverse than either Group II or Group IV, comprising both autotetraploid and diploid indica restoring lines. Group IV included a japonica cluster of the autotetraploid and diploid rices. Furthermore, genetic differences at the single-locus and two-locus levels, as well as components due to allelic and gametic differentiation, were revealed between autotetraploid and diploid varieties. This analysis indicated that the gene pools of diploid and autotetraploid rice were somewhat dissimilar, as variation exists that distinguishes autotetraploid from diploid rices. Using this variation, we can breed new autotetraploid varieties with some important agricultural characters that were not found in the original diploid rice varieties.
机译：研究了中国科学院成都生物学研究所的自身传递物和分子种群的遗传多样性和群体遗传结构，基于36微卫星基因座。在50个品种中，在人口水平中观察到中度至高水平的遗传多样性，每个基因座（AE）的等位基因数量为2至6（平均3.028）和多态性信息含量范围为0.04至0.76（平均0.366 ）。预期的杂合性（HE）从0.04至0.76（平均0.370）和Shannon的指数（i）不同的（平均值0.649）。自身传递体积群显示出略高的AE水平，他和我比二倍体群体。在50种载体中的一个或多个中的大多数简单序列重复基因座中观察到罕见的等位基因，并且构建了自身传递物和二倍体水稻的核心指纹数据库。 F统计显示主要在自身传递体积群而不是二倍体群体中的遗传变异性（FST = 0.066）。 50种附加的集群分析显示了四个主要群体。 I族含有所有的自动传递一次性和二倍体籼稻维护系和自身传递物，其原始二倍体籼型雄性无菌线。第II集团仅包含原始IR类。 III组比II族或IV组更多样化，包括自身传递自动四倍体和二倍体籼稻恢复线。第四族包括粳稻的自动进样品和二倍体卷。此外，在自身传离的一种倍增物和二倍体品种之间揭示了单轨道和两基因座水平的遗传差异，以及由等位基因分化引起的组件。该分析表明，二倍体和自身四倍体稻米的基因池有些不同，因为变异是与二倍体rics区分自动四倍体的变化。使用这种变异，我们可以培育新的自身四倍体品种，并在原始二倍体稻米品种中没有发现一些重要的农业人物。

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