Photochemical effciency is an important component of ecophysiological variation of Cistus albidus between habitats in south-east Spain
Photochemical effciency is an important component of ecophysiological variation of Cistus albidus between habitats in south-east Spain
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DOI：
10.1071/fp04172
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发表时间：
2005-01-01
影响因子：
3
通讯作者：
Incoll, LD
中科院分区：
文献类型：
--
作者：
Grant, OM;Incoll, LD
白岩蔷薇的生理生态研究。在一年的时间里，对西班牙东南部各种栖息地的植物进行了原位测量，以确定在暴露于不同温度和降水的地点生长的种群之间是否发生生理变化。并非所有观测到的变化都可以用不同的当代气象条件来解释。特别是，植物在最干燥的网站保持更高的光化学效率，通过夏季和秋季比植物在其他网站，也表现出较高的气孔导度后的秋雨。主成分分析确定的光化学效率的最大来源的种群之间的变化。这种变异可能是由于长期暴露于平均温度、降水量或大气湿度等不同主要条件下的种群进行了不同选择的结果。
The ecophysiology of Cistus albidus L. plants in a variety of habitats in south-east Spain was measured in situ over the course of a year, to determine whether physiological variation occurs between populations growing in sites exposed to differing temperature and precipitation. Not all the observed variation could be explained by differing contemporary meteorological conditions. In particular, plants at the driest site maintained much higher photochemical efficiency through the summer and autumn than plants at the other sites, and also showed higher stomatal conductance after the autumn rains. Principal component analysis identified photochemical efficiency as the greatest source of variation between populations. Such variation may represent the result of differing selection in populations that have been exposed to different prevailing conditions of mean temperature, precipitation or atmospheric humidity, for long periods of time.