RPG: Evolutionary Ecophysiology of Adaptations to Low Water and Nutrient Availability in Townsendia annua

RPG：黄花菜适应低水和养分供应的进化生态生理学

• 批准号: 9306577
• 负责人: Ann Evans
• 金额: $ 1.8万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9306577&HistoricalAwards=false
• 关键词: RPG; Evolutionary; Ecophysiology; Adaptations; Low

This research Planning Grant for Women is aimed at gathering data that will direct future investigations into the role of physiological processes in plant speciation. The first objective is to explore physiological adaptations to low water and nitrogen availability in a single species, the desert annual composite, Townsendia annua by estimating correlations of water- and nitrogen- use efficiency with fitness, measuring heritabilities and trade- offs, and evaluating phenotypic plasticity and ontogenetic variation for physiological and other adaptations to low resource availability. This work will assess the genetic limitations to adaptations and will set the stage for later studies of physiological evolution. Botanists have long recognized that the distributions of plants are limited by their ability to tolerate stressful environments such as deserts. But this begs the question of why some plants can adapt and others cannot. This project explores the genetic potential for physiological adaptation in a desert plant in the sunflower family.

这项妇女规划补助金研究旨在收集数据 这将指导未来的调查， 植物物种形成的生理过程。 第一个目标 是探索对低水低氮的生理适应 沙漠一年生复合植物， 通过估算水氮相关性， 使用效率与健身，测量遗传和贸易- 关闭，并评估表型可塑性和个体发育 对低资源的生理和其他适应性变异 空房的 这项工作将评估遗传限制， 适应，并将为以后的研究奠定基础， 生理进化 植物学家早就认识到植物的分布是 受其承受压力环境的能力限制， 沙漠 但这就引出了一个问题：为什么有些植物能够适应 而其他人不能。 该项目探索了遗传潜力， 向日葵科沙漠植物的生理适应。