LAUSR

The propagation of gabirobeira is carried out by seeds. However, the recalcitrance and not tolerance of the seeds to the storage compromise the formation of seedlings. Thus, the propagation by cuttings can be an option, being able to provide significant results in different seasons. The objective of this work was to evaluate the vegetative propagation by stem cuttings of two species of gabirobeira (Campomanesia adamantium and Campomanesia pubescens) associate to indolbutyric acid (IBA) at differents seasons of the year. Cuttings of the two species were obtained in the 4 seasons and concentrations of 0, 2000, 4000, 6000 and 8000 mg L-1 of IBA were used, by immersion in the solution for 15 seconds and sequentially staked on trays containing a sand substrate. Sixty days after experiments were set it was evaluated the percentage of cuttings with shoots, live cuttings, dead cuttings, cuttings with calluses and rooted cuttings. A completely randomized design with 5 treatments, 4 replicates and 8 cuttings per plot was adopted. During the whole experiment, the greenhouse, substrate and cutting leaves temperature was monitored. The use of IBA did not promote adventitious rhizogenesis, but provided a high percentage of survival for the species Campomanesia adamantium and Campomanesia pubescens by stem cuttings during the spring season.