外源脱落酸对苗期野生大豆抗盐能力的影响  

Exogenous Abscisic Acid Strengthen Salt Tolerance of Glycine soja at Seedling Stage

作　　者：张辉[1] 张文会[1] 苗秀莲[1] 刘丽丽[1] 

机构地区：[1]山东省聊城大学生命科学学院,山东聊城252059

出　　处：《大豆科学》2009年第5期828-832,共5页Soybean Science

摘　　要：以山东阳谷县境内野生大豆为材料,通过外施10μmol.L-1的脱落酸研究其对苗期野生大豆抗盐能力的影响。不同浓度的NaC l盐处理都抑制了野生大豆株高的生长,降低叶色值,并且严重降低光合系统Ⅱ(PSⅡ)的光能转换效率,Rub isco含量减少,SOD活性增加,MDA含量上升,喷施脱落酸后可以在不同程度上缓解上述情况,脱落酸处理可以在叶色值、PSⅡ的光能转换效率和Rub isco含量方面明显减轻盐胁迫对野生大豆的损害,差异显著(P<0.05)。ABA喷施对不同浓度的盐处理缓解程度也不尽相同,除株高及SOD活性指标外,ABA喷施对0.9%的盐胁迫缓解能力最强。In this paper, the influence of abscisic acid （ABA） on salt tolerance of wild soybean was researched during the seedling stage. The morphological parameter of plant height, photosynthetic apparatus parameter leaf color value, conversion efficiency of PS Ⅱ light energy, content of Rubisco and MDA, and SOD activity were measured in order to evaluate the effect of exogenous ABA on the tolerance of salt stress comprehensively. Result showed that the plant height was inhibited ;the leaf color value and the conversion efficiency of PS Ⅱ light energy were reduced while the activity of SOD and the content of MDA were increased under the treatments of different NaCl salt concentration. After treated with ABA, the symptoms of salt stress can be relieved at different degree. The indexes such as the leaf color value, the conversion efficiency of PS Ⅱ light energy and the content of Rubisco can be restored obviously after treated with ABA especially under the 0. 9% NaCl treatment.

关 键 词：野生大豆 盐胁迫 脱落酸 

分 类 号：S565.1[农业科学—作物学]