澳洲滨藜的抗寒性研究  

Study on Cold Resistance of Atriplex nummularia

作　　者：刘洁[1] 李华[1] 石元豹[1] 曹兵[1] 

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《北方园艺》2013年第16期89-91,共3页Northern Horticulture

基　　金：宁夏科技支撑计划重点资助项目

摘　　要：采用人工模拟降温处理方法,测定了澳洲滨藜枝、叶在不同低温处理下的电导率与主要渗透调节物质含量变化。结果表明:随着温度的降低,澳洲滨藜枝、叶组织的相对电导率增大,原生质膜的透性增加,枝条萌芽率降低;组织中脯氨酸、可溶性糖含量增加,以通过渗透调节适应低温胁迫。电导法配合Logistic方程求得澳洲滨藜的半致死温度为-11.2℃,其抗寒性差于四翅滨藜。Using artificial simulation of cold temperature treatment,the variations of relative conductivity,proline content,and soluble sugar content in branches and leaves of Atriplex nummularia were tested and studied to determine its cold resistance characteristics.The results showed that the relative conductivity,plasma membrane permeability,proline content,and soluble sugar content increased with the decreasing of temperature,but its sprouting percentage decreased.The LT50 of A.nummularia was-11.2℃ calculated with Logistic equation.So the cold resistance of A.nummularia was worse than that of A.canescens.

关 键 词：澳洲滨藜 抗寒性 相对电导率 半致死温度 

分 类 号：S688[农业科学—观赏园艺]