Abstract We studied the genetic composition of 200 pedunculate oak (Quercus robur) trees at nine nuclear microsatellite gene loci. We sampled nine locations in an area of 1100 km by 400 km in the South-Ural. The question was to analyse the genetic differentiation of the oaks at the south-east edge of the species distribution area. We observed relatively high values of genetic differentiation and fixation (delta=0.387, FST=0.0652, FST(Hedrick)=0.407) compared to values from the centre of the species distribution range. Bayesian clustering analysis revealed three genetic groups. Presence of all genetic groups was detected at all locations, but oak trees in the extreme east of the Ural Mountains were genetically most different. We hypothesise that genetic drift influenced the observed pattern.

中文翻译：

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南乌拉尔地区红栎的遗传分化

摘要 我们在九个核微卫星基因位点研究了 200 棵有花序橡树 (Quercus robur) 树的遗传组成。我们在南乌拉尔 1100 公里乘 400 公里的区域内对 9 个地点进行了采样。问题是分析物种分布区东南边缘橡树的遗传分化。与物种分布范围中心的值相比，我们观察到相对较高的遗传分化和固定值（delta=0.387，FST=0.0652，FST（Hedrick）=0.407）。贝叶斯聚类分析揭示了三个遗传组。在所有地点都检测到所有基因组的存在，但乌拉尔山脉最东端的橡树在基因上差异最大。我们假设遗传漂变影响了观察到的模式。