纤毛缬草居群遗传变异研究。(草原缬草)生长在中西部的草原上

IF 0.7 4区生物学 Q4 PLANT SCIENCES

Journal of the Torrey Botanical Society Pub Date : 2002-01-01 DOI:10.2307/3088681

A. Faivre, J. L. Windus

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引用次数: 4

摘要

俄亥俄州纤毛虫的亲缘关系。这些南部边缘种群与位于该物种分布范围中间的四个密歇根州种群的遗传变异进行了比较。对该亚雌雄异株种居群中个体的等位酶电泳结果显示，遗传多样性总体水平(Hes = 0.245)高于地方性物种的预期水平。俄亥俄州两居群的遗传多样性(He = 0.224、0.254)与密歇根州居群的遗传多样性(He = 0.0540.305)相比处于中等水平。普查种群规模与有效种群规模的差异、性别比例的不平衡、种群分布范围的差异以及生境质量的差异，都是影响毛缕草种群间遗传变异水平的因素。

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Genetic variation among populations of Valeriana ciliata T.&G. (Prairie valerian) in midwestern prairie fens1

lations of V. ciliata in Ohio. These southern, edge-of-range populations were compared with genetic variation in four Michigan populations at the middle of this species' range. Allozyme electrophoresis of individuals in populations of this subdioecious species revealed overall levels of genetic diversity (Hes = 0.245) that were higher than expected for an endemic. Though small in size, the two Ohio populations of V. ciliata had intermediate levels of genetic diversity (He = 0.224, 0.254) in comparison to the Michigan populations (He = 0.0540.305). Differences between census population size and effective population size, uneven sex ratios, location within the species' range, and variation in habitat quality all contribute to the level of genetic variation recorded among these V. ciliata populations.

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来源期刊

Journal of the Torrey Botanical Society 生物-植物科学

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of the Torrey Botanical Society (until 1997 the Bulletin of the Torrey Botanical Club), the oldest botanical journal in the Americas, has as its primary goal the dissemination of scientific knowledge about plants (including thallopyhtes and fungi). It publishes basic research in all areas of plant biology, except horticulture, with an emphasis on research done in, and about plants of, the Western Hemisphere.