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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic variability in wild populations of Prunus divaricata Ledeb. in northern Iran evaluated by EST-SSR and genomic SSR marker analysis
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Genetic variability in wild populations of Prunus divaricata Ledeb. in northern Iran evaluated by EST-SSR and genomic SSR marker analysis

机译：李属野生李野生种群的遗传变异。 EST-SSR和基因组SSR标记分析评估伊朗北部

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摘要

A population genetic analysis based on eight genomic SSR markers and three EST-SSR (expressed sequence tags) markers developed in peach (Prunus persica (L.) Batsch) and Japanese plum (Prunus salicina Lindl.) was carried out in 12 wild populations of cherry plum (Prunus divaricata Ledeb.) sampled along the Iranian coast of the Caspian Sea. A total of 184 alleles (3–31 per locus) were detected with a mean value of 16.7 alleles per locus. None of the loci or populations showed deviation from Hardy–Weinberg equilibrium, and all markers proved to be unlinked. The mean values for the observed and the expected heterozygosity were 0.66 and 0.73, respectively. There was very little genetic differentiation among populations, as was indicated by low overall values of Wright’s FST (0.03) and Nei’s GST (0.08). An analysis of molecular variance (AMOVA) showed that 96.8% of the total variance was attributable to differences between individuals within populations. Genetic and geographic distances were nevertheless positively correlated, as evidenced by a Mantel test. The high level of genetic diversity and the apparent lack of genetic structure in wild P. divaricata may be attributed to frequent long distance gene flow through frugivorous birds and possibly humans, as has been documented for other Prunus species.
机译：基于八个基因组SSR标记和三个EST-SSR（表达序列标签）标记在桃（Prunus persica（L.）Batsch）和日本李子（Prunus salicina Lindl。）中发育的种群遗传分析在12个野生种群中进行。沿里海伊朗海岸采样的樱桃李（Prunus divaricata Ledeb。）。总共检测到184个等位基因（每个基因座3–31个），平均每个基因座16.7个等位基因。没有一个基因座或种群显示出偏离Hardy-Weinberg平衡，并且所有标记都被证明是无关联的。观察到的杂合度和预期杂合度的平均值分别为0.66和0.73。赖特的F ST （0.03）和Nei的G ST （0.08）的总值较低，表明种群之间的遗传分化很小。分子方差分析（AMOVA）显示，总方差的96.8％可归因于群体内个体之间的差异。然而，Mantel检验证明，遗传距离和地理距离呈正相关。野生P. divaricata中高水平的遗传多样性和明显的遗传结构缺乏，可能是由于频繁的长距离基因流过食肉类鸟类和可能的人类而引起的，正如其他李属物种所证明的那样。

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