Water deficit-induced regulation of growth, gas exchange, chlorophyll fluorescence, inorganic nutrient accumulation and antioxidative defense mechanism in mungbean [Vigna radiata (L.) Wilczek]

• Main Authors: Aneela Afzal, Iqra Gulzar, Muhammad Shahbaz, Muhammad Ashraf
• Format: Article
• Language: English
• Published: Julius Kühn-Institut 2014-07-01
• Series: Journal of Applied Botany and Food Quality
• Subjects: mungbean; drought stress; antioxidants; gas exchange; yield
• Online Access: https://ojs.openagrar.de/index.php/JABFQ/article/view/2781

The study was conducted to appraise the influence of water deficit conditions on growth, yield, gas exchange characteristics, and antioxidative defense system in two mungbean [Vigna radiata (L.) Wilczek) lines, 97001 and 97012. The plants of both lines were grown for 30 days under normal natural conditions, after which time two drought regimes [control (well-watering and 60% field capacity)] were applied. Data for various attributes were recorded after 30 days of drought application while at maturity, yield attributes were recorded. Water deficit conditions caused a considerable reduction in growth attributes, net CO2 assimilation rate, stomatal conductance, electron transport ratio, total phenolics, leaf Ca2+ and yield attributes. Imposition of water deficit conditions significantly increased leaf tocopherol contents and activity of catalase in both mungbean lines. Both lines showed a considerable variation in growth attributes, the line 97001 being better in performance compared with 97012 under water deficit conditions.