اثر کمبود آب بر محتوای کلروفیل برگ و عملکرد ماش

Water deficit is one of the most important limiting factors for crop production in arid and semi-arid regions. Thus, a field experiment was carried out as RCB design with three replications in 2013 to assess the effect of different irrigation treatments (I1, I2, I3 and I4: irrigation after 70, 100, 130 and 160 mm evaporation from class A pan, respectively) on chlorophyll content and yield of mung-bean. Results showed that chlorophyll content index was not changed with increasing water limitation up to irrigation after 100 mm evaporation, but thereafter considerably decreased as water deficit severed. In comparison, biological and grain yields linearly decreased with increasing water deficit, reduction of biological yield was greater than grain yield.