Comparative Stem Photosynthesis between Desert and Mediterranean Legumes

沙漠豆科植物和地中海豆科植物茎光合作用的比较

• 批准号: 9119235
• 负责人: Erik Nilsen
• 金额: $ 8.5万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-15 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119235&HistoricalAwards=false
• 关键词: Comparative; Stem; Photosynthesis; between; Desert

Although stems are the second most important photosynthetic organ, very little is known about stem photosynthesis. Little is known about adaptation or acclimation of stem photosynthesis to different climatic conditions. Studies of comparative leaf photosynthesis on plants from different climates have been pivotal to understanding the mechanisms by which plants survive in a diversity of habitats. Similar studies on stem photosynthesis, particularly in mediterranean and desert taxa, are required to understand the significance of stem photosynthesis. The objective of this proposal is to measure stem photosynthesis for mediterranean and desert taxa during the winter and summer. Comparisons of these results will test for stem photosynthetic adaptation to these different habitats. Furthermore, a mathematical model of canopy stem photosynthesis will be developed. The model will be able to predict the importance of stem photosynthesis to a diversity of species in a series of different habitats. This research will greatly expand our knowledge about the significance of stem photosynthesis to plants. This information can be applied to analyses of plant success in various environments. Furthermore, the data collected in this study are crucial for understanding the importance of stem photosynthesis to growth of legume crops in agroecosystems.

尽管茎是第二重要的光合器官，但对茎光合作用知之甚少。 关于适应或适应不同气候条件的茎光合作用的知识知之甚少。 从不同气候的植物上进行比较叶片光合作用的研究对于理解植物在多种栖息地中生存的机制至关重要。 需要对STEM光合作用的类似研究，尤其是在地中海和沙漠类群中，才能了解STEM光合作用的重要性。 该提议的目的是在冬季和夏季测量地中海和沙漠分类单元的STEM光合作用。 这些结果的比较将测试对这些不同栖息地的茎光合作用。 此外，将开发一个冠层茎光合作用的数学模型。 该模型将能够预测一系列不同栖息地中STEM光合作用对各种物种的重要性。 这项研究将大大扩展我们对STEM光合作用对植物的重要性的认识。 这些信息可以应用于各种环境中植物成功的分析。 此外，这项研究中收集的数据对于理解茎光合作用对农业生态系统中豆类作物的生长的重要性至关重要。