Dissertation Research: Environment-dependence of Selection and Heritability in Impatiens pallida

论文研究：凤仙花选择和遗传力的环境依赖性

• 批准号: 9107304
• 负责人: James McGraw
• 金额: $ 0.62万
• 依托单位: West Virginia University Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-11-01 至 1994-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9107304&HistoricalAwards=false
• 关键词: Dissertation; Research; Environment; dependence; Selection

The amount of variability which is expressed and available for selection to act upon may depend on the environment. This study will use a common annual plant, pals jewelweed (>Impatiens> >pallida>), to test the effect of the environment on the expression of genetic variance and the intensity of natural selection. Populations of jewelweed from hillside and floodplain environments will be reciprocally transplanted, allowing quantification of effect of the environment on selection and genetic variability. Populations exposed to 'alien' (vis.a.vis, 'home') environments may express larger amount of genetic variability as well as greater selection, thus allowing more rapid evolution. On the other hand, if populations are unable to adapt to a new environment, they are more likely to become extinct. Being able to predict the evolutionary response of populations is particularly crucial now as species are facing rapid environmental changes at the global and regional level.

所表达和可用的可变性的量 选择的作用可能取决于环境。 这 研究将使用一种常见的一年生植物，帕尔斯（>凤仙花> >苍白球>），以测试环境对表达的影响。 遗传变异和自然选择的强度。 来自希尔赛德和洪泛平原的金珠草种群 环境将被重新移植， 量化环境对选择的影响， 遗传变异性 接触“外来”物质的人口（维斯.a.维斯， “家”）环境可能表达更大量的遗传物质， 可变性以及更大的选择，从而允许更多 快速进化 另一方面，如果人口无法 适应新的环境，他们更有可能成为 灭绝 能够预测人类的进化反应 种群数量的变化尤其重要，因为物种正面临 全球和区域一级的快速环境变化。