不同国槐株系幼苗对SO_2的生理生化反应

Physiological and Biochemical Response of Different Cultivars of Chinese Scholartree Seedlings to Sulfur Dioxide

在自制人工熏气装置中,对8个国槐株系盆栽幼苗分别进行不同浓度SO_2胁迫,通过对叶片的相对电导率、MDA含量和SOD、POD、CAT活性及叶绿素含量等指标的测定和分析,采用隶属函数法评价其抗性。结果表明,SO_2胁迫条件下,各国槐株系所测指标表现不一致,青超1、孙19、黄A、黄B 4个株系对SO_2的抗性较强。

In self- made fumigating device,8 cultivars of Chinese scholartree（ Sophora japonica） seedlings were treated under sulfur dioxide stress. The electric conductivity,malonaldehyde（ MDA） content,superoxide dismutase（ SOD） activity,peroxidase（ POD） activity,catalase（ CAT） activity,chlorophyll content and other indicators of leaves were determined and analyzed. Their resistance were evaluated by subordinate function method. The results showed that the determined indicators of different cultivars were not consistant with each other under sulfur dioxide stress. Qingchao 1,Sun 19,Huang A and Huang B showed stronger resistance to sulfur dioxide.