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APX (A), SOD (B) and GR (C), activity in leaves of Indian mustard (Brassica juncea L.) at 30 DAG. Plants were grown with/without Cu stress and treated during pre-germination for 3 h with water, SNP, FCy (SNP analogue) and SNP + cPTIO (cPTIO as a specific NO-scavenger). Same letters above bars show that data did not differ significantly by LSD test at p < 0.05.
