Biochemical &Morfological Responses Of Zea Mays To Drought Stress In Green House

Drought is considered as one of the most important limiting factors for oil seed plant zea mays 732;growth and productivity in Iran. On the basis of root and air organ dry weight as affected by drought stress exerted by polyethylene glygohle 6000 (PEG 6000), out of cultivars of 732 seeds corn. Their reponses to low water potential with respect to changes in activity of the antioxidant enzyme ascorbate peroxides, guagohtl peroxides, and its translocations . To the shoots and production of osmoprotection proline and soluble sugars were analyzed and compared . In low water potential increase ascorbate peroxidase activity, constitutively the enzyme activity was significantly higher in the corn732 A significant increase in root proline content ; Although the total soluble sugars in both cultivars tended to increase under low water potential The amounts accumulated were mostly comparable in both constitutively higher ascorbate peroxidase activity along with the higher rates of proline accumulation and total soluble sugars are taken as part of the mechanisms which confer drought tolerance to the zea mays cultivars.