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首页> 外文期刊>Belgian Journal of Botany >CLONAL DIVERSITY AND GENETIC STRUCTURE IN VACCINIUM MYRTILLUS POPULATIONS FROM DIFFERENT HABITATS
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CLONAL DIVERSITY AND GENETIC STRUCTURE IN VACCINIUM MYRTILLUS POPULATIONS FROM DIFFERENT HABITATS

机译：不同生境的桃金娘花种群的克隆多样性和遗传结构

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摘要

The life history traits of a clonal plant species, such as growth form and seedling recruitment pattern, influence the clonal diversity and structure within populations. Using Random Amplified Polymorphic DNA markers, we investigated the variation inclonal diversity and in spatial structure of clones in Vaccinium myrtillus populations from different habitats (mineral heath, peaty heath and beech grove). The partitioning of the genetic variability within and between populations was also studied. A total of 95 clones were identified among the 586 samples analysed. Despite an intra-population variability in the clonal diversity and in spatial structure of clones, no difference was detected between the different studied habitats. Although there was some variation in growth strategy, V. myrtillus exhibited a more typical phalanx growth form. Our results supported the hypothesis that the "recruitment at windows of opportunity" (RWO) is the most appropriate description of seedling recruitment in this species. In accordance with the life history traits of V. myrtillus (long-lived species with a mixed breeding system and potentially high seed dispersal), a high proportion of the genetic variation was observed within populations (86%) and only a low proportion of the genetic variation was distributed between populations (14%).
机译：克隆植物物种的生活史特征，例如生长形式和幼苗募集模式，会影响种群内的克隆多样性和结构。使用随机扩增的多态性DNA标记，我们调查了来自不同生境（矿物荒地，豌豆荒地和山毛榉林）的黑桃越桔种群的克隆多样性和克隆的空间结构变化。还研究了种群内部和种群之间遗传变异的划分。在所分析的586个样本中，总共鉴定出95个克隆。尽管种群内部克隆多样性和克隆的空间结构存在差异，但在不同的研究栖息地之间未发现差异。尽管生长策略存在一些差异，但黑桃菌却表现出更典型的指骨生长形式。我们的结果支持以下假设：“在机会之窗招聘”（RWO）是该物种中幼苗募集的最恰当描述。根据黑斑病菌的生活史特征（长寿物种，具有混合育种系统和潜在的高种子扩散性），在种群中观察到很高比例的遗传变异（86％），而在种群中观察到的比例很小。遗传变异分布在人群之间（14％）。

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