Stress of Cl- is Stronger than That of Na+ on Glycine max Seedlings Under NaCl Stress  

作　　者：LUO Qing-yun, YU Bing-jun and LIU You-liang( College of Life Science , Nanjing Agricultural University , Key Laboratory of Crop Growth Regulation /National Center of Soybean Improvement, Ministry of Agriculture , Nanjing 210095 , P. R. China ) 

出　　处：《Agricultural Sciences in China》2002年第12期1404-1409,共7页中国农业科学（英文版）

基　　金：the Scientific Foundation Special for Ph D Programs in Chinese Universities (1999002005); National Natural Science Foundation of China (39870069); the International Foundation for Science (C/3143-1), China.

摘　　要：Seedlings of six Glycine max cultivars were used to compare Cl- with Na+ in stress effects on soybean seedlings under NaCl stress. Results showed that stress of NaCl on G. max seedlings was mainly caused by Cl- and not by Na+. After treatment with isoosmotic solutions of Cl- (without Na+) and Na+ (without Cl-) respectively, fresh weight and height of G. max seedlings growing in solution of Cl- were much more stressed than those in solution of Na+. And the roots and leaves electrolyte leakage were much more increased under stress of Cl- than those under stress of Na+. Salt tolerance of G. max seedlings was mainly contributed to Cl- withheld in roots of seedlings to decrease its content in leaves.Seedlings of six Glycine max cultivars were used to compare Cl- with Na+ in stress effects on soybean seedlings under NaCl stress. Results showed that stress of NaCl on G. max seedlings was mainly caused by Cl- and not by Na+. After treatment with isoosmotic solutions of Cl- (without Na+) and Na+ (without Cl-) respectively, fresh weight and height of G. max seedlings growing in solution of Cl- were much more stressed than those in solution of Na+. And the roots and leaves electrolyte leakage were much more increased under stress of Cl- than those under stress of Na+. Salt tolerance of G. max seedlings was mainly contributed to Cl- withheld in roots of seedlings to decrease its content in leaves.

关 键 词：Soybean (Glycinemax) Salt tolerance NaCl stress Cl^- NA^+ 

分 类 号：S311[农业科学—作物栽培与耕作技术]