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Mating system parameters in Stylosanthes guianensis (Aubl.) Sw. based on RAPD markers

机译:Stylosanthes guianensis(Aubl。)Sw。的交配系统参数。基于RAPD标记

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This study investigated the mating systems in?Stylosanthes guianensis,?an important tropical forage legume. Twelve progenies were analyzed with 21 polymorphic random amplified polymorphic DNA (RAPD) loci. The mating parameters estimated using the mixed mating model showed that this population practices a mixture of selfing (61.4%) and out-crossing (38.6%) for reproduction. The results also indicated that the fraction of multilocus out-crossing of about 8.2% occurred among related individuals. Low values were obtained for correlation of paternity (0.212?±?0.046) and correlation of selfing among families (0.102?±?0.001). These results have important implications to establish strategies of maintenance of germplasm and genetic breeding.
机译:本研究调查了一种重要的热带饲草豆科植物圭亚兰(Stylosanthes guianensis)的交配系统。用21个多态性随机扩增多态性DNA(RAPD)基因座分析了十二个后代。使用混合交配模型估算的交配参数表明,该种群进行自交(61.4%)和异交(38.6%)混合繁殖。结果还表明,在相关个体之间发生了多基因座异位杂交的比例约为8.2%。亲子关系的相关性较低(0.212≤±0.046),家庭间自交的相关性较低(0.102≤±0.001)。这些结果对建立维持种质和遗传育种的策略具有重要意义。

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