Effect of Hydropriming and Seed Size on Germination Characteristics and Seedling Growth of Vigna radiata Seeds under Salinity Stress

In order to evaluate the effect of hydro priming on seed germination of Vigna radiata under salinity stress an experiment was arranged in a factorial based on a completely randomized design with three replications in laboratory of the Agricultural College of the University of Ramin Khuzestan. Treatments were salinity stress at 4 levels (0, 3, 6 and 9 Mmhos) and hydro priming at 3 levels (1, 1.5 and 3 h) and two sizes of seed (small and large seeds) that was carried out by NaCl. Results showed that all of germination characteristics decreased with increased salinity, but this decrement for seeds that primed at long time, was less. Also at all characteristics, small seeds, showed better reactions than large seeds. Generaly hydropriming was improved germination characteristics of Vigna radiata under saline conditions. According to this experiment, hydropriming improved germination and establishment.