Clonal and spatial genetic structure within populations of a coastal plant, Carex kobomugi (Cyperaceae).
Clonal and spatial genetic structure within populations of a coastal plant, Carex kobomugi (Cyperaceae).
复制标题
沿海植物苔草（莎草科）种群内的克隆和空间遗传结构。
DOI：
10.3732/ajb.0900262
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发表时间：
2010
影响因子：
3
通讯作者：
T. Ohsako
中科院分区：
文献类型：
--
作者：
T. Ohsako
阐明克隆生长格局对于了解克隆植物种群动态和生殖系统进化具有重要意义。克隆性对种群内空间遗传结构（SGS）的贡献也是一个重要问题。我研究了遗传变异的空间分布在两个人口的沿海植物苔草kobomugi使用7个微卫星位点。在14 × 40 m和14 × 34 m样地内对两个居群的226个和140个分株进行基因分型，分别得到36个和33个多位点基因型。为了量化的程度，无性系之间的混合，为每个基因，我计算了属于一个特定的基因的空间范围内的基因的分株的优势。此外，我还利用二阶空间统计分析了2 × 2 m和1 × 2 m样方内基因型的空间分布。这些分析表明，无性系高度混杂，表明无性系之间的空间相互作用水平低。包括所有对分株的亲缘系数的空间自相关分析表明，显着更强的SGS比分析只考虑对不同基因组之间的亲缘系数。我的结论是，克隆繁殖在很大程度上有助于SGS在一个很好的规模。
Clarification of clonal growth pattern is critical for understanding the population dynamics and reproductive system evolution of clonal plant species. The contribution of clonality to the spatial genetic structure (SGS) within populations is also an important issue. I examined the spatial distribution of genetic variability within two populations of the coastal plant Carex kobomugi using seven microsatellite loci. Genotyping of 226 and 140 ramets within 14 × 40 m and 14 × 34 m plots on two populations revealed 36 and 33 multilocus genotypes, respectively. To quantify the extent of intermingling among clones, for each genet, I calculated the dominance of ramets belonging to a particular genet within a spatial range of the genet. Furthermore, I analyzed spatial distribution of genotypes within 2 × 2 m and 1 × 2 m quadrats using second-order spatial statistics. These analyses indicated that clones are highly intermingled, suggesting a low level of spatial interaction among clones. Spatial autocorrelation analysis of kinship coefficient including all pairs of ramets showed significantly stronger SGS than analysis considering only pairs between different genets. I conclude that clonal propagation largely contributes to SGS at a fine scale.
影响因子：
4.9
作者：
F. Van Rossum;I. Bonnin;Stéphane Fénart;M. Pauwels;D. Petit;P. Saumitou-Laprade
通讯作者：
F. Van Rossum;I. Bonnin;Stéphane Fénart;M. Pauwels;D. Petit;P. Saumitou-Laprade
影响因子：
4.9
作者：
Isagi, Y;Shimada, K;Watanabe, S
通讯作者：
Watanabe, S
影响因子：
1.7
作者：
Araki, Kiwako;Shimatani, Kenichiro;Ohara, Masashi
通讯作者：
Ohara, Masashi