Potential for adaptation, and its realization, in natural plant populations

自然植物种群的适应潜力及其实现

• 批准号: 1257462
• 负责人: Ruth Shaw
• 金额: $ 70万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1257462&HistoricalAwards=false
• 关键词: Potential; adaptation; its; realization; natural

The principles underlying the process of adaptive evolution are well established, and have been well tested in the laboratory and over short time periods in the field. However, we also know that the long-term rate of adaptation can be subject to additional processes. The primary objective of this research is to examine how a population's genetic variability affects the rate of adaptation over many generations, in the face of variation in environmental conditions and the depletion of that genetic variation by natural selection. Quantitative genetic experiments will be conducted in nature to assess potential and realized adaptation for three populations of the annual plant species, Chamaecrista fasciculata (partridge pea).This research will establish an empirical basis for predicting rates of ongoing adaptation. Beyond their fundamental importance, rates of adaptation are now of urgent societal importance in the context of rapidly changing climate. This research will inform policy and efforts directed toward conservation of natural populations. Moreover, the project will contribute to development of scientific capability by involving undergraduate, graduate and postdoctoral scholars, including members of groups underrepresented in STEM fields.

自适应进化过程基础的原则已经确定，并且在实验室和野外的短时间内进行了很好的测试。但是，我们还知道，长期适应性速度可能会受到其他过程。这项研究的主要目的是研究人群的遗传变异性如何影响许多世代的适应率，面对环境条件的变化以及自然选择对遗传变异的耗尽。定量遗传实验将在本质上进行，以评估三个年度植物物种Chamaecrista fasciculata（Partridge Pea）的潜在和实现适应性。这项研究将建立预测持续适应率的经验基础。 除了基本的重要性之外，在迅速变化的气候下，适应率现在是紧迫的社会重要性。这项研究将为旨在保护自然人群的政策和努力提供依据。此外，该项目将通过涉及本科，研究生和博士后学者，包括在STEM领域中人数不足的团体成员，从而有助于发展科学能力。