Dissertation Research: Evolution of Inbreeding in Tomato: A Development and Genetic Study

论文研究：番茄近亲繁殖的进化：发育和遗传研究

• 批准号: 9801157
• 负责人: Elizabeth Lord
• 金额: $ 0.67万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9801157&HistoricalAwards=false
• 关键词: Dissertation; Research; Evolution; Inbreeding; Tomato

Lord 9801157 The change from cross- to self-pollination is a common trend in flowering plant evolution and domestication. A common syndrome of characters is associated with this change, including specific changes in flower form. Relatively little is known about the developmental and genetic basis of these changes in flower form. The proposed study will examine the developmental basis for differences in mature flowers, in closely related lines of wild tomatoes. Quantitative trait locus (QTL) mapping will then be used to estimate the minimal number of loci responsible for the morphological changes, and to find their general location within the genome. This study will be significant in several respects. It will utilize relatively new molecular and statistical techniques to address the long-standing question of quantitative trait evolution, using both developmental and genetic approaches. It will examine what is considered to be the single most common trend in the evolution of angiosperm reproduction: the shift from outcrossing to inbreeding. It will utilize a subject plant, tomato, which is economically important, and which is becoming a major focus of both pure and applied research. It will also advance our knowledge of the genetic control of flower form and development.

洛德9801157从异花授粉向自花授粉的转变是开花植物进化和驯化的共同趋势。一种常见的特征综合症与这种变化有关，包括花形的特定变化。关于这些花形变化的发育和遗传基础，人们知之甚少。这项拟议的研究将研究野生番茄近缘品系中成熟花差异的发育基础。然后将使用数量性状基因座(QTL)作图来估计导致形态变化的最小数量的基因座，并找出它们在基因组中的大致位置。这项研究将在几个方面具有重要意义。它将利用相对较新的分子和统计技术，利用发育和遗传方法来解决长期存在的数量性状进化问题。它将研究被子植物繁殖进化中被认为是最常见的单一趋势：从异交到近亲交配的转变。它将利用一种主题植物--番茄，这是一种重要的经济植物，正成为理论和应用研究的主要焦点。这也将增进我们对花形成和发育的遗传控制的知识。