Antioxidant capacity and pigment synthesis of marigold (Calendula officinalis L.) as influenced by benzyladenine and epibrassinolide

The impact of various rates of benzyladenine (BA) and epibrassinolide (EPL) was explored on antioxidant capacity and pigment biosynthesis of marigold in a factorial experiment on the basis of a Randomized Complete Block Design with two factors including benzyladenine (BA) and epibrassinolide (EPL), both at four rates of 0, 1, 5 and 10 mg/L with three replications. Means comparison revealed that the highest antioxidant capacity was devoted to the treatment of "0 mg/L BA x 5 mg/L EPL", the highest flavonoid concentration at three wavelengths of 270, 300 and 330 nm was observed in the treatment of "10 mg/L BA x 10 mg/L EPL", and the highest anthocyanin was obtained from the treatment of "1 mg/L BA x 0 mg/L EPL". According to results, it can be said that the application of BA and EPL significantly influenced catalase, peroxidase, phenol, chlorophyll a, anthocyanin, and carotenoid in marigold plants.