In a laboratory-vegetative experiment, the reaction of three-eyed grape cuttings taken from different parts of the one-year-old mature shoot of the Super-Extra variety to their treatment with solutions of growth stimulants Kornevin, Heteroauxin, Zircon, Epin-extra and Succinic acid was studied. It was established that Epin-extra stimulated the development of the root formation zone in cuttings from the basal part of the shoot. A similar trend was noted in the variants with the use of preparations Zircon and Succinic acid – from the middle, Heteroauxin and Zircon – from the apical part of the shoot. The most effective treatment of cuttings with preparations Zircon, Epin-extra and Succinic acid to increase the number of roots on cuttings from the middle part of the shoot was revealed: the proportion of cuttings exceeds the control by 1.9-2.7 times. The greatest length of the root in the cuttings from the apical part was in the variant with the treatment with Kornevin (4.0 cm versus 3.1 cm in the control).
