PHYSIOLOGICAL-BASIS OF THE SYNERGISTIC EFFECTS OF IBA AND TRIADIMEFONON ROOTING OF MUNG BEAN HYPOCOTYLS

Mixtures of 1-3 x 20.32 mg L-1 IBA and 1-3 x 289.5 mu g L-1 triadimefo n (TRI) significantly increased the formation of adventitious roots in mung bean hypocotyl cuttings compared to application of either IBA or TRI alone. The physiological basis of the synergistic effects of the mixture is likely to be due to a combination of increased endogenous I AA content and peroxidase activity. It is suggested that a mixture of IBA with TRI at appropriate concentrations is an effective and simple method for promoting adventitious root formation.