Nitrogen Use Efficiency As A Strategy For Drought AdaptationIn Beans

氮利用效率作为豆类干旱适应策略

• 批准号: 9019605
• 负责人: Eunice Foster
• 金额: $ 1.2万
• 依托单位: Michigan State University
• 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: 1991-02-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019605&HistoricalAwards=false
• 关键词: Nitrogen; Use; Efficiency; Strategy; Drought

This planning grant proposal is designed to evaluate the accuracy and precision of a non-destructive sampling technique that would enable researchers to acquire data on N partitioning and remobilization by periodically excising leaf discs from the same leaves of individual plants. This could substantially reduce the cost of time-course 15N experiments in terms of space and labor, while greatly facilitating the acquisition of information to help assess the role of N in plant strategies which result in increased productivity and resistance to stressful environments. The proposed method would promote research in this area and could be used simultaneously with 14C to enable study of C and N partitioning and remobilization in diverse environments, genotypes and species. The technique would be usable in field and controlled environments and could prove to be a valuable screening tool useful with plant breeding if N partitioning and remobilization are found to be one of the strategies which provide adaptation to moisture stress either universally or in environments that experience a specific type of drought.

该规划拨款提案旨在评估无损采样技术的准确性和精确度，该技术将使研究人员能够通过定期从单个植物的同一叶子上切除叶盘来获取有关氮分配和再动员的数据。 这可以大大降低 15N 时程实验在空间和劳动力方面的成本，同时极大地促进信息获取，以帮助评估氮在植物策略中的作用，从而提高生产力和对压力环境的抵抗力。 所提出的方法将促进该领域的研究，并且可以与 14C 同时使用，以便研究不同环境、基因型和物种中的 C 和 N 分配和再动员。 该技术可用于田间和受控环境，如果发现氮分配和再动员是普遍或在经历特定类型干旱的环境中适应水分胁迫的策略之一，则该技术可能被证明是一种对植物育种有用的有价值的筛选工具。