Plot size was 3mx2m. with side-by side irrigated and drought-stressed treatments. using similar randomizations, for both treatments, with three replications per treatment, arrange as an alpha 0,1) lattice. water first plied by sprinkler im gation as required for the initial 60 days of the season. After that t date, drip irrigation was applied three times weekly the soil moisture tension below -20 kPa in the control treatment with som or 30 cm Jn the stress treat water was diso initii suppied by a mes weekh until the collar of Sdrip line source system th then applied at the the flag leaf began to appear. The stress was individual same developmental stage for each cultivar by using shut-off valves of the drippers, irrigation was stopped until and 1.1 maturity