Morfologia de estacas enraizadas de duas cultivares de oliveira

Abstract

Brazil is the world's largest importer of olive oil, accounting for 2.2% of world consumption, although the country has potential for olive production, several challenges cause this production to be doubted by producers, one of them is the great difficulty in the seedlings production. Therefore, the objective of this work was to evaluate the adventitious root formation of two cultivars of Olea europaea L. with different types of synthetic hormone application and in different concentrations to rotted cuttings. For this, two olive cultivars were used, being 'Arbequina' and 'Arbosana', with concentrations of 0, 500, 2000 and 4000 ppm of synthetic hormones IAA and IBA, being allocated in a FITOTRON chamber with temperature, humidity and luminosity control. Due to the lack of uniformity of the FITOTRON chamber and the pathogen attack, there were a large number of dead cuttings, but cuttings of the 'Arbosana' cultivar treated with of 500 and 2000 ppm IBA, had higher leaf and shoot induction, compared to the application of 4000 ppm IBA. It was also observed that, when the root size was larger lower was the quality of the cutting, whereas, the higher the number of adventitious roots better the quality cutting. Therefore, it was possible to conclude that low doses of synthetic hormone contributed to the induction of sprouts and low rooting of the cuttings, and even though the quality of the cuttings is related to the number of roots emissions, and not to their length.