混合盐碱胁迫对3种类型烟草幼苗保护酶活性的影响  

Effect of Complex Alkali-Saline Stress on Activity of Protective Enzyme in Three Varieties of Tobacco Seedlings

作　　者：陈展宇[1] 崔喜艳[2] 史岩玲[1] 

机构地区：[1]吉林农业大学农学院,长春130118 [2]吉林农业大学生物技术学院,长春130118

出　　处：《吉林农业大学学报》2006年第5期486-489,共4页Journal of Jilin Agricultural University

基　　金：吉林省烟草公司资助项目(9312)

摘　　要：以吉林省常见的3种类型烟草为材料,设置5种梯度混合盐碱液对烟草幼苗进行胁迫处理,测定叶片内脯氨酸(Pro)、丙二醛(MDA)含量及超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和过氧化物酶(POD)活性的变化。结果表明:随盐碱胁迫的增加,Pro含量表现为先升后降,MDA含量逐渐升高,SOD和CAT活性表现为逐渐下降,POD活性表现为先升后降。在相同胁迫处理下,耐盐碱能力相对较强的是黄花烟,较弱的是烤烟。Three common tobacco varieties in Jilin province were stressed with five different gradients of complex alkali-saline during seedling growth stages, then malmldehyde（MDA）, proline（Pro） content and change of superoxide dismutase（SOD）, catalase（CAT） and peroxidase（POD） activity were detected. The results showed： with the stress prolonging, Pro content increased in early phase and afterwards decreased, MDA content increased actually, SOD and CAT activity gradually declined, POD activity in early phase increased and afterwards declined. In the same stress condition, alkali-saline tolerance of N. rustica was relatively higher and that of flue-cured, tobacco lower.

关 键 词：烟草 混合盐碱胁迫 脯氨酸 丙二醛 超氧化物歧化酶 过氧化氢酶 过氧化物酶 

分 类 号：S572.01[农业科学—烟草工业]