硝酸钙和水杨酸复配处理对盐胁迫下玉米幼苗生长的影响  

Effects of complex treatment with Ca(NO_3)_2 and SA on maize seeding growth under salt stress

作　　者：刘雪琴[1] 李勇慧[1] 仝瑞建[1] 王秀芳[1] 

机构地区：[1]洛阳师范学院生命科学系,河南洛阳471022

出　　处：《广东农业科学》2011年第16期11-12,15,共3页Guangdong Agricultural Sciences

基　　金：河南省科技攻关计划项目(112102310524)

摘　　要：分别用一定浓度的Ca(NO3)2和不同浓度的SA溶液处理盐胁迫下的玉米幼苗,然后测定幼苗的生理指标和形态指标,研究外源钙离子和SA对盐胁迫下玉米生长的影响。结果表明:盐胁迫抑制了玉米的生长,使玉米幼苗中的叶绿素含量下降了25.13%,可溶性糖含量、脯氨酸含量和MDA含量分别增加了4.77%、2.18%和20.69%。当用硝酸钙和不同浓度的SA复配处理后,各处理玉米幼苗中的叶绿素含量、可溶性糖含量和脯氨酸含量均有所增加,MDA含量下降,明显缓解了盐胁迫影响。结果表明,当用20 mmol/L的Ca(NO3)2和1.5 mmol/L的SA复配处理盐胁迫下的玉米幼苗时,缓解作用达到最佳。Maize seedlings was treated with Ca（NO3）2 and different concentrations of SA,and the physiological characters and morph ological traits of seedling were analyzed to study the effects of calcium and SA on the seedling growth of maize.The results showed that NaCl stress inhibited the growth of maize,the chlorophyll content of maize seedlings was decreased by 25.13%,the content of soluble sugar,proline and MDA were increased by 4.77%、2.18% and 20.69%.The chlorophyll content,soluble sugar content and proline content of maize seedlings were increased,and MDA content was decreased when adding Ca（NO3）2 and different concentrations of SA,so salt injury was significantly alleviated.In this experiment,when the concentration of Ca（NO3）2 was 20 mmol /L and the concentration of SA was 1.5 mmol/L,the mitigation effect to achieve the best.

关 键 词：玉米 硝酸钙 水杨酸 盐胁迫 复配 

分 类 号：S513.043[农业科学—作物学]