he novel salt tolerant cereal, Tritipyrum, was suggested as a potential species for cultivation in saline soils to improve salt tolerance in wheat via breeding programs. Hence, investigation of its reaction to salinity stress, especially at different growth stages, seems to be necessary. For this purpose, an experiment was conducted using hydroponic technique in controlled as well as field conditions. Nine tritipyrum lines were tested under three levels of salinity (50, 100 and 200 mM NaCl) in hydroponic culture. Then, based on the results, three tritipyrum lines along with one wheat cultivar were cultivated in the field under three levels of salinity of irrigation water (control, 7dS/m and 14dS/m). In the hydroponic test, according to the statistical analysis of the genotypes based on their vegetative, reproductive and seed maturity traits, tritipyrum lines were more salt tolerant than salt tolerant wheat cultivar. Also cluster analysis showed that (St/b)×(Cr/b), F4 and Az/b were the most salt tolerant tritipyrum lines. Furthermore, based on the field trial, tritipyrum lines showed better performance and produced higher grain yield as well as higher grain protein content than wheat cultivar in saline condition. Based on our results, it is conceivable to improve the salt tolerance of wheat through breeding programs. Tritipyrum lines can also be cultivated in saline soils as fodder or forage crop.

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