NaCl、Na_2SO_4胁迫下盐蒿种子萌发过程中的生理变化  

Physiological Characteristic Changes During the Process of Seed Germination of Artemisia halodendron under NaCl,Na2SO4 Stress

作　　者：史宝胜[1] 刘冬云[1] 孟祥书[1] 聂庆娟[1] 吴京民[1] 杜绍华[1] 张彦广[1] 

机构地区：[1]河北农业大学,河北保定071000

出　　处：《西北林学院学报》2007年第5期45-48,共4页Journal of Northwest Forestry University

基　　金：河北省林业局项目(0209218)

摘　　要：为了明确盐蒿种子萌发过程中对NaCl、Na2SO4的抗盐能力,本研究采用培养皿滤纸发芽法研究了不同浓度的盐胁迫对种子萌发时的生理变化。结果表明,在NaCl、Na2SO4胁迫可显著抑制种子发芽,且发芽指数、发芽势显著降低。2种盐胁迫均可增加可溶性糖和蛋白质的含量,降低氨基酸含量。NaCl处理前期可降低SOD的酶活性,后期增加SOD的酶活性;而MDA的含量随盐处理的浓度增加而升高。研究认为盐蒿种子萌发时能忍受的2种盐的极限浓度在1.0%～2.0%,且NaCl的毒害作用大于Na2SO4。In order to understand the salt-resistant ability,the germination of Artemisia halodendron seeds in different salts were studied.The method of germination on the paper was used in this study.The results showed that the high-content salt could restrain seed germination,decreased the germination index and germination energy under salt stress.Two kinds salt may all increase the contents of solubility candy and protein and reduce amino acid contents.The study showed that the SOD enzymatic activity reduced in the earlier stage and increased in later stages;But the MDA content increased with the increase of salt content.The utmost of the salt content were between 1.0%~2.0% during seed germination.The pernicious effect of NaCl was greater than that of Na2SO4.

关 键 词：盐蒿 种子 盐 可溶性糖 可溶性蛋白质 

分 类 号：S722.36[农业科学—林木遗传育种]