Antioxidant responses of barley (Hordeum vulgare L.) genotypes to lead toxicity

The effects of lead toxicity were studied in the leaves of two barley cultivars. Plants were grown for 32 days in perlite and then exposed to 10- and 15-mM Pb(NO3)2 for additional 6 days. Lead toxicity decreased the photosynthetic pigment contents in the leaves of Tokak 157/37. The phenolic content of the leaves was reduced in Tarm-92 and increased in Tokak 157/37. The malondialdehyde content in leaves showed that lipid peroxidation in Tokak...