Effect of 24-Epibrassinolide on Activity of Antioxidant Enzymes in Brassica Juncea L. Under H₂O₂ Stress

Field experiment was conducted to find out the effectiveness of H₂O₂ on dynamics of growth, total proteins and antioxidant defense system of Brassica juncea L. growing with 24-epiBL. 15 mM H₂O₂ concentration was sub-lethal for B. juncea L. reducing germination rate. Shoot length was increased to significant level under 24-epiBL in H₂O₂ treated and untreated plants. H₂O₂ degraded protein content while 24-epiBL alone makes significant upgradation of total proteins. H₂O₂ played vital role in induction of abiotic stress tolerance by upregulation of antioxidant defense system. 24-epiBL further ameliorates this upgradation and makes the plants more hardy to tolerate abiotic stress.