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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

基本信息

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

项目摘要

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.

虽然茎是第二重要的光合作用器官，但对茎的光合作用知之甚少。关于茎的光合作用对不同气候条件的适应或驯化知之甚少。对不同气候植物叶片光合作用的比较研究对于了解植物在不同生境中生存的机制至关重要。需要对茎的光合作用进行类似的研究，特别是在地中海和沙漠分类群中，才能了解茎的光合作用的重要性。这项建议的目的是测量地中海和沙漠类群在冬季和夏季的树干光合作用。这些结果的比较将测试树干对这些不同生境的光合作用适应性。此外，还将建立冠层茎叶光合作用的数学模型。该模型将能够预测茎的光合作用对一系列不同生境中的物种多样性的重要性。这项研究将极大地扩展我们对茎的光合作用对植物意义的认识。这些信息可用于分析植物在各种环境中的成功情况。此外，本研究收集的数据对于理解茎的光合作用在农业生态系统中对豆科作物生长的重要性至关重要。