NaCl胁迫下促生菌对黄瓜幼苗生长的促生效应  

The Promoted Effect of PGPR on the Cucumber Seedling's Growth under The Stress of NaCl

作　　者：辛树权[1] 郭菊卉[1] 赵骥民[1] 

机构地区：[1]长春师范学院生命科学学院,吉林长春130032

出　　处：《北方园艺》2009年第12期46-49,共4页Northern Horticulture

基　　金：吉林省教育厅科研计划资助项目(吉教科合字(2006)第自84号)

摘　　要：用植物促生菌CS-2的菌体悬浮液和蒸馏水对黄瓜种子浸泡处理后,种植于普通土和草碳土均匀混合的基质中,以4个NaCl浓度的溶液作为幼苗的浇灌液,待幼苗真叶长至第4片时,测定各处理黄瓜幼苗的过氧化物酶活性、可溶性蛋白含量和脯氨酸含量。结果表明:NaCl胁迫存在时,过氧化物酶活性和可溶性蛋白含量与各组对照相比增长;在NaCl浓度不大于0.4%时,脯氨酸含量与对照相比则下降;株高则与过氧化物酶活力呈负相关性。Cucumber seeds which were treated by soaking with （28-2 cell suspension, a kind of plant growth-promoting bacteria, and distilled water, planted in the matrix uniformly mixed by common soils and grass carbon ones. Then, irritation was done with four concentrations of NaCl solution, measure the peroxidase activity, the soluble protein content and proline content when the true leaf number of seedling to be four. The results indicated thai iperoxidase activity and soluble protein content had a better growth compared with the control respectively at the presence ：of NaCl stress; Whereas, proline content declined when the proportion less than 0. 4% compared with the control; meanwhile, there was a negative correlation between height and the peroxidase activity.

关 键 词：ACC脱氨酶细菌 株高 可溶性蛋白 过氧化物酶 脯氨酸 

分 类 号：S642.204.1[农业科学—蔬菜学]