Evolutionary Causes & Consequences of Metabolic Variation in Arabidopsis & Arabis

进化原因

• 批准号: 9527725
• 负责人: Thomas Mitchell-Olds
• 金额: $ 37.7万
• 依托单位: University of Montana
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527725&HistoricalAwards=false
• 关键词: Evolutionary; Causes; & Consequences; Metabolic

9527725 Mitchell-Olds Hybrid vigor is central to many questions in agriculture and genetics. Increased fitness of heterozygotes (the phenomenon of hybrid vigor or heterosis) contributes to high yield in many crop species, and may maintain genetic variation in wild populations. Despite their importance, the factors influencing hybrid vigor and other forms of genetic variation are poorly understood at the genetic and molecular level. The research proposed takes a reductionist genetic approach to this problem by studying causes of quantitative genetic variation in important physiological traits. Chromosomal locations and DNA sequence variation of genes that may control metabolism will be examined in an effort to understand the factors influencing levels of genetic variation, vigor, and fitness or yield in plant populations. This work may have important benefits in agriculture, forestry, and understanding of natural populations.

9527725 Mitchell-Olds 杂交活力是农业和遗传学中许多问题的核心。 杂合子适应性的增加（杂种优势或杂种优势现象）有助于许多作物物种的高产，并可能维持野生种群的遗传变异。 尽管影响杂种活力和其他形式遗传变异的因素很重要，但在遗传和分子水平上人们对它们知之甚少。 该研究提出通过研究重要生理性状的数量遗传变异的原因，采用还原论遗传学方法来解决这个问题。 将检查可能控制新陈代谢的基因的染色体位置和 DNA 序列变异，以努力了解影响植物群体遗传变异、活力、适应性或产量水平的因素。 这项工作可能对农业、林业和了解自然种群有重要的好处。