The mechanisms determining salt tol

The mechanisms determining salt tolerance for eachof the two wheat genotypes were different. In durumwheat, the ratio of Kþ/Naþ was not an indicator of salttolerance and the Kþ content of leaf and xylem tissueswere the important traits. The authors accordingly suggestedthat the capacity of durum wheat for Naþ exclusionis less than bread wheat, and hence higher Naþ islocalized in durum aerial parts and tissues, making theplant less tolerant under salinity stress conditions.