Study the physiological responses of mung bean (Vigna radiata L.) as affected by irrigation with magnetized water under drought stress
Subject Areas : Journal of Plant Ecophysiology
1 - عضو هیات علمی گروه زراعت دانشگاه آزاد اسلامی واحد یادگار امام خمینی (ره) شهرری
Keywords: photosynthesis, Chlorophyll, Relative water content, Leaf area, Magnetic irrigation,
Abstract :
In order to investigate the effect of magnetized water on drought tolerance of mung bean (Vigna radiata L.) Partow cultivar, a pot experiment was done in Yadegar-e-Imam Khomeini (RAH) Branch, Islamic Azad University at 2013. This experiment was conducted in factorial at the basis of completely randomized design with four replications. The first factor consisted of two irrigation levels including irrigation after 50 and 100 mm evaporation from class A evaporation pan as control and drought stress conditions, respectively. The second factor consisted of two types of water including tap water and magnetized water. Results showed that drought decreased chlorophyll content, stomatal conductance, relative water content, leaf area and net photosynthetic rate; nevertheless irrigation with magnetized water reduced drought damages via improving all of these traits. In irrigation with tap water, the higher and lower net photosynthetic rat were 8.70 and 5.60 µmol CO2 m-2 s-1 under normal and drought conditions, respectively. Nonetheless, in irrigation with magnetized water, the higher and lower net photosynthetic rat were 10 and 6.29 µmol CO2 m-2 s-1 under normal and drought conditions, respectively. Therefore, after supplementary field studies and observing magnetized water effect on yield and yield components and economical computing, this treatment, as simple, safe and practical method can use for improvement drought tolerance of mung bean.