华北农学报Issue(1)：170-174,5.DOI:10.7668/hbnxb.2016.01.027
新疆野苹果幼苗对盐胁迫的生理响应
Physiological Responses of Malus sieversii Seedling Under Salinity Stress
摘要
Abstract
To explore the physiological response of Malus sieversii to salinity stress,Malus sieversii seedlings were cheared with six salinity levels (0,0.2%,0.4%,0.6%,0.8% and 1.0% NaCl) for 4 hours and seven time levels (0,4,8,12,16,20 and 24 hours) in 0.4% NaCl.Contents of proline,MDA,chlorophyll,and soluble sugar in leaves and activity of SOD and POD were mensurated.The results showed that proline content got the peak when NaCl concentration was 0.6% or 12 h in 0.4% NaCl,increasing 63.1% and 27.0% compared to control respec-tively.Increasing salt concentration and time resulted in higher levels for malondialdehyde content.Chlorophyll con-tent was decreased first,subseguently increased and decreased once more.Among all treatment they were lower than control.Soluble sugar content and the activity of SOD and POD were increased first,then decreased.The results in-dicated that Malus sieversii could reduce the damage to the plant by accumulating more proline and soluble sugar and increasing the activity of SOD and POD.It was adapted to salinity stress to some extent.关键词
新疆野苹果/盐胁迫/抗氧化酶/生理响应Key words
Malus sieversii/Salinity stress/Antioxidant enzymes/Physiological responses分类
农业科技引用本文复制引用
于玮玮,曹波,龙鸿,李慧,李爱,阎国荣..新疆野苹果幼苗对盐胁迫的生理响应[J].华北农学报,2016,(1):170-174,5.基金项目
国家自然科学基金青年项目（31300564）；新疆维吾尔自治区财政林业科技专项（400173）；天津市科技特派员项目 （）
