نهمین کنفرانس ملی و اولین کنفرانس بین المللی فیزیولوژی گیاهی

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کد مقاله 1277

عنوان Physiological Responses of Crops to Water Deficit Induced by Partial Root-Zone Irrigation

نویسندگان Ashraf Alizadeh Amraie - Hamdollah Eskandari

چکیده Water scarcity is a major limitation to agricultural production in arid and semi-arid regions. Partial root-zone irrigation (PRD) has emerged as an effective water-saving irrigation strategy that allows plants to maintain physiological activity under reduced water supply. This review synthesizes current knowledge on crop physiological responses to water deficit induced by PRD, with particular emphasis on photosynthesis, antioxidative defense mechanisms, yield formation, and water productivity (WUE). Special attention is given to experimental evidence reported in cereal, legume, and intercropping systems, drawing extensively on studies conducted by Eskandari and colleagues. Results indicate that PRD induces moderate water stress that alters photosynthetic processes and stimulates antioxidant defense systems, including superoxide dismutase, catalase, and peroxidases. Although PRD may slightly reduce yield or seed quality when imposed during sensitive growth stages, it generally improves WUE and system-level productivity, particularly in diversified cropping systems. Overall, PRD represents a promising irrigation strategy for sustainable crop production when appropriately managed.

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