Effect of Different Auxin Concentrations on Virginia Creeper (Parthenocissus quinquefolia) Rooting

Parthenocissus plant is one of the most attractive outdoor deciduous vines; provides deep green cover to most any object, rapidly climbing by means of tendrils and adhesive disks, can be espaliered against a wall and provides great visual appeal during winter when the leaves have fallen. Rooting the cutting of this plant is difficult without using a rooting hormone, so the present research project was investigated to find out the optimum auxin (NAA) hormone concentration on rooting of this plant. Six treatments (0, 1000, 2000, 3000, 4000 and 5000 ppm NAA) were used in a completely randomized design (CRD) with four replicates. Results showed that in most cases cuttings treated with 1000 ppm NAA produced the best results or results which are not significantly different from the higher concentrations of NAA, so it's better to save in using the auxin hormone and use the lowest concentration in rooting the parthenocissus hard wood cuttings.