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不同地下水埋深柽柳、芦苇的生理响应
Authors
李卫红
陈亚宁
陈亚鹏
陈敏
Publication date
1 January 2009
Publisher
Abstract
结合塔里木河中游沙吉力克断面、阿其河断面地下水位的动态监测,对柽柳、芦苇叶片的叶绿素、可溶性糖、丙二醛(MDA)、超氧化物歧化酶(SOD)、过氧化物酶(POD)等生理指标进行分析测试。研究表明,随着干旱胁迫加强,柽柳、芦苇的可溶性糖含量,MDA含量,SOD活性呈显著增加,叶绿素含量和POD活性显著减少,显示出植物受到了不同程度的干旱胁迫,并通过调节自身生理代谢过程,以增强抗旱性;柽柳、芦苇叶片各生理指标和地下水埋深存在着密切的相关关系,与可溶性糖含量、MDA含量、SOD活性呈正相关,与叶绿素含量、POD活性呈负相关;地下水位是影响塔里木河流域植物生理特征的的主要环境因子;在相同水分胁迫下,芦苇的生理过程比柽柳强烈,对地下水埋深变化更为敏感
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016