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作 者 ：张青青;徐海量;叶茂;李吉玫;杨红梅;牛俊勇

期 刊 ：植物研究 2009年 29卷 4期 页码：453-459

关键词：地下水埋深；生理指标；胡杨；塔里木河下游；

Keywords:groundwater depth, physiological indexes, Populus euphraticn, the lower reaches of Tarim River,

摘 要 ：根据2001年至2007年以来对胡杨叶片生理指标的测定结果和同时期地下水埋深监测的分析，可以初步得出如下的一些结论：输水后随着地下水埋深变浅，水分胁迫程度减轻，胡杨叶片的多个生理指标发生明显的变化，并且这种变化与地下水埋深变化的趋势表现出一定的相关性。从所测的胡杨叶片的10个生理指标的变化看，叶绿素、可溶性糖和ABA等指标与地下水埋深的变化的相关关系较好、显著性较高，可以在今后的研究中作为胡杨所受干旱胁迫程度的主要衡量指标；MDA和CTK等指标可以作为参考指标来判断胡杨所受的水分胁迫程度；而Pro、SOD、POD、GA₃和IAA等指标对地下水埋深的变化表现不敏感。

Abstract:According to the results of physiological indexes of the Populus euphraticn’ leaves and the data of groundwater depth from 2001 to 2007, some conclusions could be drawn primarily: After water conveyance, some physiological indexes of the P. euphraticn’ leaves obviously changed with the groundwater depth and the relieve of water-stress intensity, and these changes presented certain correlations with the varying of groundwater depth. In the 10 parameters, chlorophyll content, soluble sugar and abscisic acid (ABA) had high correlations with the groundwater depth of the growth sites, showing that these parameters could be used as indicators for manifesting the extent of water stress of P. euphraticn. The indexes of malondialdehyde (MDA) and cytokinin (CTK) could be regarded as reference indexes of the extent of water stress which P. euphraticn suffering from. While, the physiological indexes of proline (Pro), superoxide dismutase (SOD), peroxidase (POD), gibberellin (GA₃) and indoleacetic acid (IAA) were not sensitive to the change of the groundwater depth.

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