The effect of saline stress on activity of some antioxidative enzymes during wheat seed germination

Salinity is one of major environmental factors limiting agricultural production and has a considerable effect on world agriculture. Wheat is one of the main crops occupying a large area in the world. For these reasons, we studied the effect of the saline stress on the activity of some antioxidative enzymes at this graminaceous plant. As biological material, we used seeds of three wheat cultivars (Faur, Fundulea and Ia i 2) which were treated with different NaCl concentrations. Simultaneously, three controls not exposed at treatment were prepared. The dynamics of catalase and peroxidase activities was determined at 96h, 168h and 240h, namely in early stages of ontogeny. The results evidenced that the saline stress determined modifications of seedlings enzyme activities, at the three moments of analysis, depending on wheat variety and tested concentration of NaCl solutions.