镉胁迫下两个多年生黑麦草品种的生理响应  

The Physiological Response of Two Varieties of Lolium perenne Under Cadmium Stress

作　　者：黄登峰[1,2] 席嘉宾[3] 赵运林[1,4] 

机构地区：[1]湖南农业大学生物科学与技术学院,湖南长沙410128 [2]湖南高尔夫旅游职业学院工程系,湖南常德415900 [3]中山大学总务处,广东广州510275 [4]湖南城市学院化学与环境工程系,湖南益阳413000

出　　处：《北方园艺》2016年第3期66-68,共3页Northern Horticulture

基　　金：国家科技创新基金资助项目(12C26214405388);广东省科技攻关资助项目(2010B020412003)

摘　　要：以来自美国的多年生黑麦草品种‘OverseederⅡ’和来自加拿大的多年生黑麦草品种‘Aubisque’为试材,在温室盆栽条件下,研究比较了不同浓度的二价镉(Cd^(2+))对2种黑麦草品种的脂质过氧化程度、保护酶活性和渗透调节物质等生理指标的影响。结果表明:在不同浓度的Cd^(2+)胁迫下,与来自美国的多年生黑麦草品种‘OverseederⅡ’相比,来自加拿大的多年生黑麦草品种‘Aubisque’表现出了更低的脂质过氧化水平、更强的抗氧化保护酶活性和更具适应性的渗透调节水平,这些结果说明了来自加拿大的黑麦草品种‘Aubisque’对Cd^(2+)的胁迫具有更好的耐受性,从而为该品种在我国重金属污染土壤区的植被恢复提供了一定的理论依据。In order to compare the resistance of varieties of Lolium perenne‘OverseederⅡ＇from American and‘Aubisque＇from Canada to cadmium stress,several physiological indexes including the degree of lipid peroxidation,activities of antioxidant enzymes and osmotic substance were determined under different cadmium stress with potted plants in the greenhouse condition.The results showed that the variety of Lolium perenne from Canada possessed lower lipid peroxidation,much stronger activities of antioxidant enzymes and much more adaptive state.It was indicated that the variety of Lolium perenne from Canada had better resistance to cadmium stress than that from American,which could provide a theoretical basis for the vegetation regeneration of cadmium-polluted soil.

关 键 词：镉胁迫 黑麦草 生理响应 

分 类 号：S543.6[农业科学—作物学]