Experimental Manipulation of Ecological Factors Influencing Mating Patterns in Mimulus ringens

影响拟酸浆交配模式的生态因素的实验操作

• 批准号: 9119311
• 负责人: Jeffrey Karron
• 金额: $ 16.09万
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-15 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119311&HistoricalAwards=false
• 关键词: Experimental; Manipulation; Ecological; Factors; Influencing

In many species of flowering plants, rates of outcrossing and gen dispersal vary markedly across a range of spatial scales. Researchers have often attributed this variation to ecological factors that influence pollinator movements. However, very little is known about the ways in which these variables affect the mating system of individual plants. The proposed research investigates the influence of population density on patterns of paternity in Mimulus ringens. This native perennial is readily cloned, facilitating the establishment of replicate populations of genetically distinct individuals. All plants in each experimental population will have unique enzyme phenotypes, permitting assignment of paternity to all sampled offspring. Studies of pollinator movements, flowering phenology, and seed yield will be combined with detailed paternity data to test a series of predictions derived from ecological and evolutionary theory. In addition, this study will provide an exceptionally detailed description of individual variation in outcrossing rates, gene dispersal, and male fertility and will document the influence of ecological factors on the patterns observed.

在许多开花植物物种中，异型杂交和基因扩散的速率在一系列空间尺度上存在显着差异。 研究人员经常将这种变化归因于影响传粉媒介运动的生态因素。 然而，人们对这些变量如何影响单个植物的交配系统知之甚少。 本研究旨在调查人口密度对 Mimulusringens 亲子关系模式的影响。 这种本土多年生植物很容易被克隆，有助于建立遗传上不同的个体的复制群体。 每个实验群体中的所有植物都将具有独特的酶表型，从而可以将父子关系分配给所有采样的后代。 对传粉媒介运动、开花物候和种子产量的研究将与详细的亲子关系数据相结合，以检验源自生态和进化理论的一系列预测。 此外，这项研究将对异交率、基因传播和雄性生育力的个体差异进行极其详细的描述，并将记录生态因素对观察到的模式的影响。