Variation in antioxidant metabolism of faba bean (Vicia faba) under drought stress induced by polyethylene glycol reveals biochemical markers associated with antioxidant defense

Antioxidative responses in faba bean plants subjected to different osmotic potentials induced by PEG-6000 were investigated. Drought stress significantly decreased photosynthetic gas exchange parameters (net CO2 assimilation rate, transpiration rate, internal concentration of CO2 and stomatal conductance) and leaf RWC in Bachar and Giza 3, while the magnitude of reduction in Bachar was relatively low. This could be due to its better antioxidant...