Enraizamento de murici (Bryssonima crassifolia (L) Rich) associado ao tipo de estaca e iba (ácido indolbutírico

Abstract

The true Murici or beach Murici, Byrsonima crassifolia (L) Rich, belongs to the Malpighiaceae family and has a wide natural occurrence in different regions of the state of Maranhão. Its use is diversified and can be used in the fresh or processed food sector. Species of the genus Byrsonima are in the process of domestication, have low seed germination potential and there is a lack of studies regarding vegetative propagation or that hinders the reproduction of the species. Therefore, the objective of the present work was to evaluate the propagation by cuttings of local selection of murici ('Itapiracó') through the induction of rooting of different types of cuttings, submitted to concentrations of indolbutyric acid (IBA). The experiment was carried out in an intermittent nebulization chamber at the Universidade Estadual do Maranhão shelter. The adopted experimental design was completely randomized, in a 2x5 factorial scheme, with four replications, six cuttings per plot, using two types of cuttings (herbaceous and subwoody) and five concentrations of indolbutyric acid (0, 1500, 3000, 4500 and 6000 mg L -1), with six cuttings per plot. The evaluations were carried out at 60, 90 and 120 days after the installation of the experiment, taking into account the following variables: retention of leaves on the cuttings, percentage of rooting and rates of callus formation. I verified that the herbaceous cuttings showed a higher percentage of leaf preservation, as well as a higher rate of rooting and callus formation. In short, the results are not considered consistent and conclusive regarding the relationship between the rooting process and the indolbutyric acid (IBA) levels used in the cuttings