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首页> 外文期刊>Plant Biosystems >Genetic structure of Linaria capraria Mill. (Plantaginaceae) and endemic species of the Tuscan Archipelago (central Mediterranean)
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Genetic structure of Linaria capraria Mill. (Plantaginaceae) and endemic species of the Tuscan Archipelago (central Mediterranean)

机译：Linaria capraria Mill的遗传结构。托斯卡纳群岛（地中海中部）的（车前草科）和特有种

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摘要

This study, based on inter-simple sequence repeats in 14 populations of Linaria capraria, shows that genetic diversity at the species level is 0.21 and represents 58% of total variance, whereas the level of intrapopulational genetic diversity is 0.07 and represents 42% of total variance. Gene flow is absent between populations from the same island. On the basis of analysis of molecular variance, three centers of genetic diversity were found: Elba and Pianosa, Montecristo, and Capraia; these correspond to the group of islands that remained isolated during the Wurm marine regression. A mean proportion of species-level diversity resides among populations, so we hypothesize that the species has a mixed reproductive system that lies somewhere between obligate outcrossing and obligate selfing. The most genetically diverse populations live in natural and well-isolated rocky habitats that seem to have no particular intervention requirements for conservation but the entire system of populations of this endemic species should be preserved.
机译：这项研究基于14个毛of鱼的简单序列间重复，表明该物种水平的遗传多样性为0.21，占总变异的58％，而种群内遗传多样性的水平为0.07，占总变异的42％方差。来自同一岛屿的种群之间没有基因流。在分子变异分析的基础上，发现了三个遗传多样性中心：厄尔巴岛和皮亚诺萨岛，蒙特克里斯托和卡普拉亚。这些对应于在Wurm海洋回归期间仍然孤立的岛屿群。物种水平多样性的平均比例存在于种群之间，因此我们假设该物种具有混合生殖系统，介于专性异交和专性自交之间。遗传上最多样化的种群生活在自然且隔离良好的岩石生境中，似乎对保护没有特别的干预要求，但应保留该特有物种的整个种群系统。

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