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Njeri Henry Kariuki, 樊香绒, 李伟, 张俊杰, 李修岭, 陈媛媛. 竹叶眼子菜种群遗传多样性与群落物种多样性关系的研究[J]. 植物科学学报, 2020, 38(2): 241-248. DOI: 10.11913/PSJ.2095-0837.2020.20241
引用本文: Njeri Henry Kariuki, 樊香绒, 李伟, 张俊杰, 李修岭, 陈媛媛. 竹叶眼子菜种群遗传多样性与群落物种多样性关系的研究[J]. 植物科学学报, 2020, 38(2): 241-248. DOI: 10.11913/PSJ.2095-0837.2020.20241
Njeri Henry Kariuki, Fan Xiang-Rong, Li Wei, Zhang Jun-Jie, Li Xiu-Ling, Chen Yuan-Yuan. Study on the relationship between genetic diversity and species diversity of Potamogeton wrightii Morong between conserved and disturbed submerged plant communities[J]. Plant Science Journal, 2020, 38(2): 241-248. DOI: 10.11913/PSJ.2095-0837.2020.20241
Citation: Njeri Henry Kariuki, Fan Xiang-Rong, Li Wei, Zhang Jun-Jie, Li Xiu-Ling, Chen Yuan-Yuan. Study on the relationship between genetic diversity and species diversity of Potamogeton wrightii Morong between conserved and disturbed submerged plant communities[J]. Plant Science Journal, 2020, 38(2): 241-248. DOI: 10.11913/PSJ.2095-0837.2020.20241

竹叶眼子菜种群遗传多样性与群落物种多样性关系的研究

Study on the relationship between genetic diversity and species diversity of Potamogeton wrightii Morong between conserved and disturbed submerged plant communities

  • 摘要: 以洪湖中的沉水植物群落及其优势种竹叶眼子菜(Potamogeton wrightii Morong)为研究对象,利用AFLP分子标记结合野外调查的方法,分析保护区(干扰较小)与非保护区(干扰较大,敞水区)中沉水植物群落的物种多样性与竹叶眼子菜遗传多样性之间的相关性。结果显示:洪湖沉水植物群落物种丰富度(S)和物种多样性辛普森指数(D)在保护区和非保护区均未发现显著性差异;竹叶眼子菜的重要值(IV)在保护区(5.2%~23.2%)较非保护区(8.5%~73.3%)稳定。竹叶眼子菜的遗传多样性在两个区未发现显著差异,其遗传多样性与群落物种多样性这两个指标在保护区、非保护区及全湖水平均不相关,说明沉水植物群落的物种多样性和竹叶眼子菜的遗传多样性对不同环境干扰的响应有所差异。

     

    Abstract: Community surveys and genetic analyses (based on AFLP markers) were carried out to compare the species diversity (SD) of submerged plant communities, genetic diversity (GD) of dominant species Potamogeton wrightii Morong, and species-genetic diversity correlation (SGDC) between conserved and disturbed areas in Honghu Lake. Results showed that there were no significant differences in the Simpson index or species richness of the submerged plant communities or genetic diversity (He) of P. wrightii in the conserved and disturbed areas. The importance values (IV) of this species changed in a large range (8.5% - 73.3%) in the disturbed area but remained relatively stable in the conserved area (5.2% - 23.2%). No correlation was found between SD and GD in the conserved area, disturbed area, or entire Honghu Lake, indicating that nonparallel evolutionary factors have affected SD and GD.

     

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