Stress of Cl- is Stronger than That of Na+ on Glycine max Seedlings Under NaCl Stress |
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Authors: | LUO Qing-yun YU Bing-jun LIU You-liang |
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Affiliation: | 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 |
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Abstract: | Seedlings of six Glycine max cultivars were used to compare Cl- with Na+ in stress effects onsoybean seedlings under NaCl stress. Results showed that stress of NaCl on G. max seedlings was mainlycaused by Cl- and not by Na+. After treatment with isoosmotic solutions of Cl- (without Na+ ) and Na+ (with-out Cl-) respectively, fresh weight and height of G. max seedlings growing in solution of Cl- were much morestressed than those in solution of Na+. And the roots and leaves electrolyte leakage were much more increasedunder stress of Cl- than those under stress of Na+. Salt tolerance of G. max seedlings was mainly contributedto Cl- withheld in roots of seedlings to decrease its content in leaves. |
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Keywords: | Soybean (Glycine max) Salt tolerance NaCl stress Cl- Na+ |
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