镉胁迫对银条开花期生理生态的影响  

Effects of Cd on the Physiological and Biochemical Properties of Stachys floridana Schuttl.ex Benth.in Flowering Stage

作　　者：刘孟刚[1] 刘会超[1] 姚连芳[1] 贾文庆[1] 

机构地区：[1]河南科技学院园林学院,河南新乡453003

出　　处：《北方园艺》2010年第4期8-11,共4页Northern Horticulture

基　　金：河南省创新人才工程资助项目(2005126-49);河南科技学院博士基金资助项目(HK05-1226)

摘　　要：为了探讨镉胁迫对银条开花期生理生态的影响,采用盆栽试验方法,研究了镉胁迫对银条叶片生理特性的影响。结果表明:随着Cd浓度的提高,银条叶片叶绿素含量显著降低,Cd浓度与叶片叶绿素含量呈极显著负相关,相关系数r=-0.9852**(P<0.01);细胞质膜透性、SOD活性均随镉处理浓度的增加显著升高、相关系数分别为r=0.9850**(P<0.01)r、=0.9923*(P<0.05);MDA含量、POD活性则先升高再降低,与镉浓度呈显著正相关,相关系数r分别为0.9845**(P<0.01)0、.9018*(P<0.05)。Effects of different cadmium concentrations on growth of physiological index in leaves of Stachys floridana Schuttl. ex Benth. were studied with the pot experiment. The results showed that the chlorophyll content of Stachys floridana supplemented with Cd was significantly decreased with increase of cadmium concentration, and the chlorophyll content showed a negative relationship with the cadmium concentration, and the coefficient of correlation was -0. 9852 （P〈0. 01）. The cell membrane permeability and the activitie of Superoxide Dismutase（SOD） were significantly enhanced with the increase of cadmium concentration. The coefficient of correlation were 0. 9850 （P〈0. 01） ,0. 9923（P〈0. 05） respectively. Malondialdehyde （MDA） and the activitie of Peroxidase （POD）in leaves,firstly increased ,and then decreased,showed a significantly positive relationship with the cadmium concentration. The coefficient of correlation were 0. 9845 （P〈0. 01） ,0. 9018 （P〈0. 05）respectively.

关 键 词：银条 镉胁迫 开花期 生理生态 

分 类 号：S632.9[农业科学—蔬菜学]