مشخصات پژوهش

To evaluate the effect of seed priming with potassium nitrate on germination and emergence traitsof two soybean cultivars under salinity stress, two laboratorial and greenhouse experiments were carried outas a factorial experiment based on a completely randomized design with 4 replications in the Seed PhysiologyResearch Department of Agricultural Faculty of Bu-Ali Sina University, Iran. Treatments were included of twosoybean cultivars (Sahar and Gorgan-3), two levels of non-priming and priming with potassium nitrate at 6gl concentration and three levels of salinity (0, 4 and 8 dS m induced by sodium chloride). The results11showed that Sahar cv. was superior to Gorgan-3 cv. in all traits and in both experiments. Seed primingwith KNO significantly increased germination and emergence percentages, radicle and plumule length, seedling3dry weight, plant height, plant leaf area and plant dry weight. Also at the salinity stress, mean germination andemergence time of primed seeds were less than non-primed seeds, significantly. At the salinity stress, specifichighest salinity level, final germination percentage, radicle and plumule length, plant height, plant leaf area andplant dry weight of primed seeds were more than non-primed seeds, significantly. Positive effects of primingwith potassium nitrate on seeds of Gorgan-3 cv. were greater than those of Sahar cv.