Grant Olga M, Incoll Lynton D
School of Biology, University of Leeds, Leeds LS2 9JT, UK.
Funct Plant Biol. 2005 Apr;32(2):107-115. doi: 10.1071/FP04172.
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.
在西班牙东南部的各种栖息地中，对白岩蔷薇（Cistus albidus L.）植物的生态生理学进行了为期一年的实地测量，以确定生长在不同温度和降水环境中的种群之间是否存在生理差异。并非所有观察到的差异都可以用当代不同的气象条件来解释。特别是，在最干旱地点的植物在整个夏季和秋季保持着比其他地点的植物更高的光化学效率，并且在秋雨过后气孔导度也更高。主成分分析确定光化学效率是种群间差异的最大来源。这种差异可能代表了长期暴露于不同平均温度、降水或大气湿度等主要条件下的种群中不同选择的结果。
