外源Ca^(2+)对盐胁迫下玉米幼苗生理指标的影响  

Effects of Eexogenous Ca^(2+) on Physiological Index of Maize Seedlings under Salt Stress

作　　者：武燕[1] 解丹丹[1] 马小亭 徐熔[1] 王倩[1] 

机构地区：[1]大庆师范学院,黑龙江大庆163712

出　　处：《安徽农业科学》2014年第12期3471-3472,共2页Journal of Anhui Agricultural Sciences

基　　金：黑龙江省大学生创新创业项目(201310235007)

摘　　要：[目的]分析外源Ca2+对玉米幼苗在盐胁迫下的缓解效果。[方法]以玉米为试验材料,用100 mmol/L NaCl对玉米进行盐胁迫处理(对照组),试验组在此基础上加入20 mmol/L CaCl2溶液,待玉米幼苗长至三叶期后测定其生理生化指标。[结果]施加了外源Ca2+后玉米幼苗叶片中POD活性在0.05水平显著升高,可溶性糖和叶绿素含量在0.05水平显著增加;MDA和脯氨酸含量在0.05水平显著降低。[结论]外源Ca2+对玉米幼苗NaCl盐害有一定的缓解作用。[ Objective ] To analyze the alleviating effects of exogenous Ca2＋ on maize seedlings under salt stress. [ Methods J Taking maize as material, treating with 100 mmol/L NaCl （control group）, the experimental group on the basis of adding 20 mmol/L CaCl2 , measuring the physiological and biochemical indexes for maize seedling at 3-leaf stage. [ Results] After application of exogenous Ca2＋ , MDA content in leav- es of maize seedlings decreased significantly; the content of soluble sugar and chlorophyll increased significantly. [ Conclusion ] Exogenous Ca2＋ could alleviate action on maize seedlings under salt stress to a certain extent.

关 键 词：盐胁迫 外源CA2+ 玉米叶片 生理生化指标 

分 类 号：S513[农业科学—作物学]