Genetic differentiation between co-occurring crops and their wild relatives will be greatly modified by crop-to-weed gene flow and variation between human and natural selective pressures. In this paper, the pattern of population differentiation within and among the wild and cultivated populations of Agropyron desertorum in Iran, with respect to both total protein profiles and phenotypic traits, is measured and compared. A total of 180 A. desertorum individuals from 14 wild and four cultivated populations were included in the study. The levels of genetic diversity in cultivated populations were similar to those in wild populations (mean percentage of polymorphic loci PPL=53.26 versus PPL=51.66, and mean expected heterozygosity He=0.154 versus He=0.165). Neighbour-joining cluster analysis showed that wild populations and cultivated populations were not separated into two groups. The coefficient of genetic differentiation (Fst) between a cultivar and its wild progenitor was 0.060. For the 14 wild populations, a significant genetic differentiation among populations was found using AMOVA analysis (30 of total genetic variation resided among populations).
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机译:作物与杂草的基因流动以及人类和自然选择压力之间的变异将大大改变共生作物与其野生近缘种之间的遗传分化。本文测量并比较了伊朗沙漠农羚野生种群和栽培种群内部和种群之间的种群分化模式,包括总蛋白质谱和表型性状。该研究共纳入了来自14个野生种群和4个栽培种群的180个沙漠苔藓个体。栽培种群的遗传多样性水平与野生种群相似(多态性位点平均百分比[PPL]=53.26% vs PPL=51.66%,平均预期杂合性[He]=0.154 vs He=0.165)。邻域聚类分析表明,野生种群和栽培种群未分为两组。品种与其野生祖细胞之间的遗传分化系数(Fst)为0.060。对于14个野生种群,使用AMOVA分析发现种群之间存在显著的遗传分化(总遗传变异的30%存在于种群之间)。
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