缺镁胁迫对草莓苗生理特性的影响  

Effect of Magnesium Deficiency on Physiological Characteristics of Strawberry

作　　者：王纪忠[1] 潘国庆[1] 周青[1] 蒋婷婷[1] 吴娟[1] 

机构地区：[1]淮阴工学院生命科学与化学工程学院,江苏淮安223003

出　　处：《北方园艺》2013年第1期8-10,共3页Northern Horticulture

基　　金：淮安市农业科技支撑计划资助项目(SN1119)

摘　　要：以‘红颜’草莓为试材,采用水培法,研究了缺镁对草莓苗形态及生理特性的影响。结果表明:随着缺镁症状加重,草莓苗的株高、根长、叶面积和单株重量降低;相对电导率和MDA含量增加,叶绿素含量、SOD和POD活性减低;还原糖含量增加,而蔗糖的含量降低,但可溶性总糖含量增加。说明缺镁导致生物量降低,酶活性减弱,引起细胞膜伤害,降低活性氧清除能力。Seedlings of the‘Hongyan’cultivar of strawberry were used as materials,the effects of magnesium deficiency on physiological characteristics were studied by hydroponically test.The results showed that magnesium deficiency reduced the height of seedling,the length of root,the area of leaf and weight of strawberry;the relative conductance and the contents of MDA were increased,the content of chlorophyll,the activity of SOD and POD were decreased.The contents of reducing sugar was increased while the sucrose was decreased,but the total soluble sugar was increased.Magnesium deficiency stress could therefore declined the quantum of life-form of strawberry,and declined the activity of enzyme,induced the damage of cell membrane,as well as lowered the capacity of ROS scavenging system.

关 键 词：草莓 缺镁 胁迫 生理特性 

分 类 号：S668.4[农业科学—果树学]