اثر تنش شوری بر پاره‌ای از ویژگی‌های فیزیولوژیک و رشد دو رقم ذرت شیرین

In order to evaluate the response of two cultivars of sweet corn to salinity stress a factorial experiment based on completely randomized design with four replications was arranged in the greenhouse of College of Agriculture, Shiraz University, Shiraz, Iran during 2013. Treatment included two cultivars of sweet corn (KSC403 and Passion) and four salinity levels (0, 25, 50 and 100 m M). The pots were irrigated with tap water to 4-5 leaf stage and then salinity treatments were applied. The results showed that with increasing salinity dry weight of both cultivars decreased but this reduction in Passion was higher than cultivar KSC403. There was no significant difference between two cultivars in stem height. KSC403 had less shoot Na+ concentration and more shoot K+ concentration, compared with Passion. Priority of KSC403 in the most of traits can indicate a greater ability of this cultivar to tolerate salinity stress.