Regulation of Dormancy in Wild Oat Seed

野燕麦种子休眠的调控

• 批准号: 9728007
• 负责人: Michael Foley
• 金额: $ 6万
• 依托单位: Purdue Research Foundation
• 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: 1998-03-15 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9728007&HistoricalAwards=false
• 关键词: Regulation; Dormancy; Wild; Oat; Seed

9728007 Foley Seed dormancy represents a distinct physiological stage of arrested development in the life cycle of almost all plants. Dormant seeds will not grow when germinated under optimum conditions unless they have been exposed for a period of time to certain environmental conditions. Seed dormancy is a profound adaptation of nondomesticated plants to their environment and plant survival in natural and agroecosystems depends heavily upon this trait. This research is aimed at identifying genetic factors that influence dormancy and germination of cereal grain seeds such as wild oat and rice. In the course of this research, rice germplasm with varying degrees of dormancy will be identified and cross-pollinated to produced populations for genetic analyses. A genetic model for dormancy will be developed and molecular markers for genes regulating dormancy identified. The genetic model will serve as a framework to ask more in-depth questions about how genes and environmental factors influence seed germination. Our initial molecular markers will be important tools in cloning genes that control germination and dormancy in greases. Cloning genes will be necessary to understand the fundamentals of seed dormancy and germination.

9728007 Foley种子休眠代表了几乎所有植物生命周期中发育停滞的一个独特生理阶段。 休眠种子在最佳条件下发芽时不会生长，除非它们已经暴露在某些环境条件下一段时间。 种子休眠是非驯化植物对环境的一种深刻的适应，植物在自然和农业生态系统中的生存在很大程度上取决于这一特性。 本研究旨在确定影响燕麦和水稻等谷物种子休眠和萌发的遗传因素。 在这项研究过程中，将鉴定具有不同休眠程度的水稻种质，并将其异花授粉到生产群体中进行遗传分析。 休眠的遗传模型将被开发和分子标记的基因调节休眠确定。 遗传模型将作为一个框架，来询问有关基因和环境因素如何影响种子萌发的更深入问题。 我们最初的分子标记将是克隆油脂中控制萌发和休眠的基因的重要工具。 克隆基因对于了解种子休眠和萌发的基本原理是必要的。