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Studies on growth and distribution of Na + , K + and Cl − in soybean varieties differing in salt tolerance
Author(s) -
Läuchli A.,
Wieneke J.
Publication year - 1979
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19791420103
Subject(s) - salt (chemistry) , chemistry , salinity , sodium , biology , organic chemistry , ecology
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.