Studies on growth and distribution of Na+, K+ and Cl− in soybean varieties differing in salt tolerance |
| |
Authors: | A Luchli J Wieneke |
| |
Institution: | A. Läuchli,J. Wieneke |
| |
Abstract: | Soybean plants, varieties “Lee”, “Jackson” and “Bragg” were grown in solution culture at various salinity levels. A NaCl concentration of 10 mM was already inhibitory to growth of “Jackson”; growth of “Lee”, however, was only reduced at a salt concentration of 50 mM or higher. The moderately salt tolerant variety “Lee” efficiently excluded Cl? from the leaves up to about 50 mM NaCl in the medium, but showed high Cl? contents in the root; exclusion of Na+ from the leaves was also apparent in this variety. On the other hand, the salt sensitive variety “Jackson” did not have the capacity for exclusion of Cl? and Na+. The physiological behaviour of the variety “Bragg” resembled that of “Jackson”. It is suggested that the exclusion of Cl? and Na+ from the leaves in the soybean variety “Lee” is regulated by the root. |
| |
Keywords: | |
|
|