Genetic Variation in Rare and Common Plants

Author:

Cole Christopher T.1

Affiliation:

1. Division of Science and Mathematics, University of Minnesota-Morris, Morris, Minnesota 56267;

Abstract

▪ Abstract  Isozyme variation in 247 plant species is summarized as 57 generic-level comparisons of rare and common species. All species-level measures of variation (Ps, As, APs, Hes) and mean population-level measures (Pp, Ap, APp, Hep, and Ho) show reductions significant at the p < 0.001 level, but FIS and FST did not differ significantly, reflecting the similarity of breeding system in congeneric species and disparate ranges often sampled for rare and common species. The reduction in gene flow (Nm) among populations of rare species was significant when estimated from FST, but not when estimated from private alleles. Species monomorphic for isozymes are predominantly endemic and self-fertile. Although census populations of virtually all rare species are higher than levels at which theory would predict genetic erosion, and higher than levels protected by the U.S. Endangered Species Act (ESA), rare plants evidently have more significant reductions in genetic variation and gene flow than have been recognized previously.

Publisher

Annual Reviews

Subject

Ecology,Ecology, Evolution, Behavior and Systematics

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3