
%0 Journal Article
%A Winter, E 
%T Salt Tolerance of <I>Trifolium alexandrinum</I> L. II. Ion Balance in Relation to Its Salt Tolerance
%J Functional Plant Biology
%D 1982/04/01
%V 9
%N 2
%P 227-237
%K 
%R https://doi.org/10.1071/PP9820227
%U https://www.publish.csiro.au/paper/PP9820227 
%X Detailed analysis of K+, Na+ and Cl- contents and the distribution of leaf-applied 22NaCl and Na36Cl in roots, stems, petioles and leaves of T. alexandrinum grown under a moderate salinity regime showed that this plant uses several mechanisms to cope with moderate salinity: (1) retranslocation of Na+ (and Cl-) out of young leaves, maintaining salt concentrations which are low compared to stems and petioles; (2) predominant basipetal movement of leaf-exported Na+ and its extrusion into the medium; (3) establishment of a gradient of K+ :Na+ ratios along the plant axis providing highest K+ :Na+ in youngest stem parts and leaves; and (4) restricted transfer of Cl- from roots to shoots leading to moderate Cl- contents distributed equally in stem tissues of different ages. The results are discussed with respect to the dynamic aspects of salt tolerance and the terminology of 'salt-includers' and 'salt-excluders', 
