Propagação de pitangueira via miniestaquia

Abstract

The present experiment was to study some aspects related to the propagation and growth of seedlings pitangueira, from cuttings. For this, there were three chapters. The first article discusses the rooting of cuttings selection Cherry Surinam black courtesy Embrapa Clima Temperado, with different concentrations of indole butyric acid (IBA) (0, 1000, 2000 mg.L1) associated with two kinds of branches (cuttings and herbaceous woody). It was evaluated the survival and rooting percentage, number of roots, root length, number of shoots and shoot length. It was observed positive influence of growth regulators on rooting, and the concentration of 2000 mg L-1 to more efficient with herbaceous material. The second article was tested at a concentration of predefined first chapter, herbaceous branches with and without the presence of the apex, design with five replicates of 30 cuttings each. It was evaluated the survival and rooting percentage, number of roots, root length, number of shoots and shoot length. Significant difference in apical cuttings that had higher rooting percentage, average between 80 and 100%. In the third article, was tested to determine the optimization time of rooting of cuttings of Surinam cherry, within two months, 20 cuttings were evaluated throughout the week and the variables analyzed were number of cuttings to root primordia (swelling and white spots on injury held at the base), rooting percentage, number of roots, length of roots and roots with more than an centimeters. In general, the cuttings have shown a gradual increase in growth according to the cultivation time. It was concluded that seven weeks the cuttings were able to transplant in plastic bags forming a seedling quality.