The work aimed study the effects of plant growth regulators on the rooting of 'Flying Dragon' stem cuttings [Poncirus trifoliata var. monstrosa (T. Ito)]. Citrus branches were collected of each season of the year (4 experiments). Cuttings (10-cm-long) containing one half leaf were obtained from these branches. The base of the cuttings was treated with plant growth regulators in the talc formulation: Control (H2O); IBA 0.5%; NAA 0.5%; IBA + caffeic acid 0.5%; and NAA + caffeic acid 0.5%. The cuttings were planted in trays containing coconut fiber and maintained for three months in the misting chamber. The cuttings collected in the fall and treated with a mixture of NAA 0.5% and caffeic acid at 0.5% showed higher rooting percentage.
assexual propagation; auxins; phenolic acids; sugars
