ABSTRACT Drought stress is one of the major abiotic stresses in agriculture worldwide. This study was carried out to investigate the effect of moisture stress on antioxidative response in rabi sorghum, in ten genotypes of rabi sorghum. A field experiment with three irrigation regimes viz; moisture stress condition with irrigation applied at the time of sowing, terminal stress condition with irrigation applied at the time of sowing and panicle initiation stage and non stress condition with irrigation applied at various critical growth stages was carried out in a split plot design with three replications. Seeds were grown separately under three moisture regimes Antioxidant enzymes such as superoxide dismutase, guiacol peroxidase and catalase were significantly increased under moisture stress condition at 50% flowering as well as at dough stage. Among the genotypes, RSV 1572 and variety Phule Anuradha recorded highest SOD, CAT and GPX activity under moisture stress condition at both stages. Increased activity of antioxidant enzymes will be helpful to detoxify reactive oxygen species generated due to moisture stress. Therefore, RSV 1572 and Phule Anuradha may be used for boosting up further breeding programme.
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