Analysis of the relationship between allozyme heterozygosity and fitness in the rare Gentiana pneumonanthe L.
Analysis of the relationship between allozyme heterozygosity and fitness in the rare Gentiana pneumonanthe L.
复制标题
珍稀肺炎龙胆同种异位酶杂合度与适合度的关系分析。
DOI：
10.1046/j.1420-9101.1995.8060739.x
复制
发表时间：
1995
影响因子：
2.1
通讯作者：
J. Den Nijs
中科院分区：
文献类型：
--
作者：
J. Oostermeijer;M. W. Van Eijck;N. C. Van Leeuwen;J. Den Nijs
特别是对于在小种群中出现的稀有物种，它们容易发生遗传变异的丢失和近亲繁殖，通常缺乏对杂合性和适合度之间关系的详细了解。等位酶变异和健身在稀有植物龙胆种群规模的报告后，我们提出了一个更详细的分析杂合性和个人健身之间的关联。本研究的目的是测试是否增加健身更多的杂合子个体是最好的解释“近亲繁殖”假说或“超显性”假说。在温室中生长8个月期间测量个体适合度，作为六个生活史参数的表现。PCA将这些参数减少到四个主要的健身组件。对7个多态等位酶位点的个体杂合性进行了评分。
Especially for rare species occurring in small populations, which are prone to loss of genetic variation and inbreeding, detailed knowledge of the relationship between heterozygosity and fitness is generally lacking. After reporting on allozyme variation and fitness in relation to population size in the rare plant Gentiana pneumonanthe, we present a more detailed analysis of the association between heterozygosity and individual fitness. The aim of this study was to test whether increased fitness of more heterozygous individuals is explained best by the ‘inbreeding’ hypothesis or by the ‘overdominance’ hypothesis. Individual fitness was measured during 8 months of growth in the greenhouse as the performance for six life‐history parameters. PCA reduced these parameters to four main Fitness Components. Individual heterozygosity was scored for seven polymorphic allozyme loci.