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.

杂交活力是农业和遗传学许多问题的核心。杂合子适应度的提高（杂种优势或杂种优势现象）有助于许多作物物种的高产，并可能保持野生种群的遗传变异。尽管它们很重要，但在遗传和分子水平上对影响杂种活力和其他形式遗传变异的因素了解甚少。本研究采用还原论的遗传方法，研究重要生理性状的数量遗传变异的原因。染色体位置和DNA序列变异可能控制代谢的基因将被检查，以努力了解影响遗传变异水平的因素，活力，适应性或产量在植物群体。这项工作可能对农业、林业和对自然种群的理解有重要的好处。