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首页> 外文期刊>Russian journal of genetics >Microsatellite analysis of clonality and individual heterozygosity in natural populations of aspen Populus tremula L.: Identification of highly heterozygous clone
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Microsatellite analysis of clonality and individual heterozygosity in natural populations of aspen Populus tremula L.: Identification of highly heterozygous clone

机译：白杨自然种群克隆性和个体杂合性的微卫星分析：高度杂合克隆的鉴定

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摘要

Aspen Populus tremula L. (Salicaceae) is the fast-growing tree species of environmental and economic value. Aspen is capable of reproduction by both seeds and vegetative means, forming root sprouts. In an adult stand, identification of ramets of one clone among the trees of seed origin based on their morphology is difficult. A panel of 14 microsatellite loci developed for individual identification of aspen was applied for the clonal structure analysis in four natural aspen stands of the European part of Russia: Moscow and Voronezh oblasts, the Mari-El Republic, and the Republic of Tatarstan. In 52 trees from the Moscow sample, 41 multilocus genotypes were identified; in the Voronezh sample, among 30 individuals, 25 different genotypes were detected; and in the sample from Mari-El, 32 trees were represented by 13 genotypes. In the stand from Sabinsky Forestry, Tatarstan, all of the examined 29 trees were represented by a single genotype. The ancestral tree carrier of this genotype which was the most heterozygous (0.929) among all studied aspen individuals (sample mean, 0.598) obviously has spread over a large territory during several cutting and reproduction cycles, currently occupying the area of 2.2 ha. For aspen, usually suffering from Aspen trunk rot, such high viability is evidence of resistance to the main pathogens. The revealed superclone deserves further study with karyological methods and flow cytometry to determine ploidy level and analysis of the growth rate and the quality of wood for possible use in plantation forest production.
机译：白杨（Salicaceae）是具有环境和经济价值的快速生长的树种。白杨能够通过种子和营养方式繁殖，形成根芽。在成年看台上，难以根据种子的形态在种子起源的树木中鉴定出一个克隆的分株。开发了一个由14个微卫星基因座组成的面板，用于对白杨进行个体鉴定，在俄罗斯欧洲部分的四个天然白杨林分站中用于克隆结构分析：莫斯科和沃罗涅日州，马里埃尔共和国和and斯坦共和国。在莫斯科样本中的52棵树中，鉴定出41种多基因座基因型。在沃罗涅日的样本中，在30个人中，检测到25种不同的基因型。在Mari-El的样本中，有13种基因型代表了32棵树。在Ta斯坦萨宾斯基林业公司的林分中，所有接受检查的29棵树均由单一基因型代表。该基因型的祖先树载体在所有研究过的白杨个体中最杂合（0.929）（样本平均值为0.598），显然在几个采伐和繁殖周期中已散布在大片土地上，目前占地2.2公顷。对于通常患有白杨树干腐烂的白杨，如此高的生存能力证明了其对主要病原体的抵抗力。所揭示的超级克隆值得用核动力学方法和流式细胞术进行进一步研究，以确定倍性水平，并分析生长速率和木材质量，以用于人工林生产。

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