Effects of polyethylene glycol on three of zea mayz genotypes

To study the effects of Drought stress on the germination of zea mayz cultivars, a test was conducted in randomized complete block design with three replications in Biotechnology Laboratory of Ardabil Islamic Azad University in 2012. In this experiment, the first factor, were Drought concentrations and the second were cultivars. Results showed that there was a significant difference in the level of one percent between the experimental conditions and studied genotypes, in terms of all parameters measured. Finally, the results indicated the superiority of the cultivar Tabas in terms of all germination indices and study on the Drought concentrations, showed that water in normal conditions had the highest average in all of index apart from the average index during germination.