POWRE: The Contribution of Parental Effects to Life History Evolution in Campanula americana

POWRE：亲本效应对美洲风铃生活史进化的贡献

• 批准号: 9752947
• 负责人: Laura Galloway
• 金额: $ 7.5万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-10-15 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9752947&HistoricalAwards=false
• 关键词: POWRE; Contribution; Parental; Effects; Life

9752947 Galloway An individual's phenotype may be influenced by its parents' genes and environment, in addition to its own. In the herbaceous plant Campanula americana, timing of germination determines whether an individual will be an annual or a biennial. The proposed research will evaluate the potential for parental effects, both genetic and environmental, to influence germination time and hence life history variation in this species. In this POWRE proposal, Laura Galloway will evaluate the potential for parental environments to influence patterns of seed germination by growing seeds produced under a range of maternal and paternal environments (light and nutrient) under both controlled and natural conditions. She will also determine the potential for specific maternal characters to influence germination patterns. In particular, maternal flowering time is likely to influence fruiting phenology, and that in turn may affect patterns of offspring germination. And, she will measure the association between germination time and fitness in a natural population to evaluate the importance of parental effects for individual success. This work will help determine whether it is necessary to follow populations for more than one generation to predict patterns of response to selection. This POWRE award permits Dr. Galloway to expand her research program by exploring new questions (evolutionary consequences of maternal effects) in a new model system (Campanula americana). It will help establish her in a tenure-track position, in a discipline of field-oriented population biological research previously represented only by men at her institution.

小行星9752947 一个人的表型可能会受到父母的基因和环境的影响，除了自己的。 在草本植物美洲风铃草中，发芽的时间决定了个体是一年生还是二年生。 拟议的研究将评估潜在的父母的影响，遗传和环境，影响发芽时间，从而在这个物种的生活史变化。 在这项POWRE提案中，Laura Galloway将评估亲本环境影响种子萌发模式的潜力，方法是在受控和自然条件下，在一系列母本和父本环境（光照和营养）下种植种子。 她还将确定特定的母性特征影响发芽模式的潜力。 特别是，母亲的开花时间可能会影响结果物候，而这反过来又可能影响后代发芽的模式。 而且，她将测量自然种群中发芽时间和适应性之间的关联，以评估亲本效应对个体成功的重要性。 这项工作将有助于确定是否有必要跟踪种群超过一代，以预测对选择的反应模式。 这个POWRE奖允许加洛韦博士通过在一个新的模型系统（美洲风铃草）中探索新的问题（母体效应的进化后果）来扩展她的研究计划。 这将有助于她在一个终身职位，在一个面向领域的人口生物学研究的学科以前只代表了男性在她的机构。