Abstarct: This research was carried out to evaluate the resistance of several varieties of corn under the influence of drought stress in split-plot baxsed on randomized complete block design with three replications in a field located in Jajarm city. The irrigation factor was applied to 2 levels (common irrigation interval of the area as control and twice the normal irrigation intervals in the area for low-irrigation) in the main plots and 6 varieties (lines) of corn (SC 704, Maxima, BC678, AS71, Simon, KSC703) in sub plots. The results showed that drought stress duo to reduce the traits of chlorophyll contents, 100 seed weight, stem wet weight, relative water content, and leaf area index, seed number per row, number of rows per ear, grain yield, wet forage yield and biological yield and in conventional irrigation, leaf temperature significantly decreased at a 5% probability level. The effect of cultivars on stem wet weight, membrane stability index, leaf temperature, leaf area index, chlorophyll content and number of seeds per row were significantly increased at 1% probability level. The results of cross effects showed that in drought stress, KSC703, SC 704, Maxima and Simon cultivars had better results in chlorophyll content, leaf fresh weight and leaf area index, respectively, and AS71 had lower leaf temperatures and index The stability of the membrane was higher. In conventional irrigation, AS71 showed better performance in leaf area index, leaf temperature and leaf wet weight. In general, in common irrigation, the best result was AS71 and the weakest result was Simon, and in drought stress, the better result in AS71 and weaker result in BC678.