Growth and development of plants depend on environmental conditions. Water stress is one of the major factors that affect
crop production. Up to 45% of the world agricultural lands are subject to continuous or frequent drought stress [1]. To
survive under water stress, plants have evolved morphological,physiological, and biochemical responses. Photosynthesis
and cell growth are the primary processes affected by stress [2]. Water stress in higher plants affects PSII and antioxidant activities.