Quantitative Character Evolution under Complicated Sexual Systems, Illustrated in Gynodioecious Fragaria virginiana
Quantitative Character Evolution under Complicated Sexual Systems, Illustrated in Gynodioecious Fragaria virginiana
复制标题
复杂性系统下数量性状的进化，以雌雄异株草莓为例
DOI：
10.1086/376581
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Ashman
中科院分区：
文献类型：
--
作者：
M. Morgan;T. Ashman
许多分类群，特别是植物，以其多样化和复杂的有性系统而闻名。这种多样性给进化分析中应用其他标准方法带来了障碍。一个例子涉及表型进化的数量遗传学(Lande 1976,1979；Lande和Arnold 1983)。标准的数量遗传分析方法已经扩展并应用于不同的性别(Lande 1980；Meagher 1992,1994；Ferguson and Fairbairn 2000)和两性(Morgan 1992,1994；Morgan and Schoen 1997)物种，但还没有开发出数量遗传方法来处理其他交配系统，如雄蕊和雌雄异株；雄蕊、雌蕊和雌雄同株；或异株。在这篇笔记中，我们发展了高斯数量遗传近似来描述在雌雄异株物种中，性别是在简单的核基因控制下表达的雌性和两性的选择形状特征。然后，我们通过对花瓣大小的选择分析来说明这一方法。实证分析的结果表明，性别系统影响数量性状进化的方式多种多样。最后，我们举例说明在这里使用的概念(即性别决定的遗传、生育力加权的性别变形率和
Many taxa, especially plants, are famous for their diverse and complicated sexual systems. This diversity presents an obstacle to application of otherwise standard methods in evolutionary analysis. One example involves the quantitative genetics (Lande 1976, 1979; Lande and Arnold 1983) of phenotypic evolution. Standard methods of quantitative genetic analysis have been extended to and applied in separate sexed (Lande 1980; Meagher 1992, 1994; Ferguson and Fairbairn 2000) and hermaphroditic (Morgan 1992, 1994; Morgan and Schoen 1997) species, but quantitative genetic methods have not been developed to address other mating systems such as androand gynodioecy; andro-, gyno-, and monoecy; or heterostyly. In this note, we develop Gaussian quantitative genetic approximations to describe how selection shapes traits expressed in females and hermaphrodites of a gynodioecious species where sex is under simple nuclear gene control. We then illustrate the approach through analysis of selection acting on petal size in Fragaria virginiana. Results of the empirical analysis suggest diverse ways in which sexual systems influence the evolution of quantitative characters. Finally, we give examples of how concepts used here (i.e., the inheritance of sex determination, fertility-weighted sex morph ratio, and