Enraizamento de estacas de castanha-de-cutia com uso de ácido indolbutírico

Abstract

The oily cutia nut (Couepia edulis Prance) is native to Amazonian uplands and most frequent in the State of Amazonas. The propagation of the species is usually by seed, but the process is long, as the seed take 18 months to germinate. Vegetative propagation can be the solution for production of seedlings. This study evaluated the use of IBA in the vegetative propagation of C. edulis, using different types of cuttings and IBA concentrations, in an experimental design with randomized blocks, using a 4 x 3 factorial, with 4 types of cuttings and 3 IBA concentrations (0, 3,000 and 6,000 mg L-1). At the end of the evaluations, the best emission of shoots occurred in the concentrations of 0 mg L-1 and 3.000 mg L-1 of IBA. The emission of shoots was better in herbaceous cuttings without leaves and in semi-woody cuttings. The best callus formation occurred in the control and in the herbaceous cuttings with whole leaves and half leaves. The emission of roots was slightly better in the cuttings without the use of IBA and in the concentration of 6.000 mg L-1. The best emission of roots occurred in the herbaceous cuttings with leaves. The percentage of success was low, but suggests the use of smaller concentrations of IBA.