The Effect of Brassinosteroids on Rootting of Stem Cuttings in Two Barberry (Berberis thunbergii L.) Cultivars

Brassinosteroids are a group of over seventy steroid compounds whose discovery in lower and higher plant organisms created new possibilities growth control. The aim the work was to evaluate effect two brassinosteroids: brassinolide (BL) 24-epibrassinolide (24epiBL) as compared auxin rooting enhancer indole-3-butyric acid (IBA), on stem cuttings Thunberg’s barberry cultivars ‘Maria’ ‘Red Rocket’. were sprayed with water solutions regulators: IBA (200 mg·L−1), 0.05% BL or 24epiBL, well combination each brassinosteroids while control water. In both positively affected degree root length. Their application resulted elevated contents chlorophyll, total soluble sugars, free amino acids, hydrogen peroxide catalase activity. more effective when combined than used singly.