Método de aplicação do ácido indolbutírico na estaquia de cultivares de pessegueiro

Abstract

This work had as objective to evaluate the vegetative propagation potential of semihardwood cuttings of peach cultivars treated with indolebutyric acid (IBA) at two different application methods. The trial was carried out at the Departamento de Botânica/Instituto de Biociências of the Universidade Estadual Paulista Júlio de Mesquita Filho" (UNESP), located in Botucatu (SP, Brazil). The cuttings were prepared of stems taken from Delicioso Precoce, Jóia 1 and Okinawa peach cultivars in December, 2001. The cuttings were treated with 0; 1,250; 2,500 and 3,750mg L-1 IBA for 5 seconds (concentrated solutions) and 0, 100, 200, 300mg L-1 IBA for 24 hours (diluted solutions), and were planted in polystyrene trays using vermiculite as substrate, and put into the greenhouse under intermittent mist condition for 45 days. The best results of rooting were obtained with cultivar Okinawa (29%) and with IBA concentrated solutions (9%). The results showed that the peach cultivars propagation by cuttings is not recommended.