The objetive of this experiment, was to evaluate the effect of giberellic acid (GA3) concentrations, on sugar apple (Annona squamosa L.) seeds germination and seedlings emergence. The experiment was carried out in a completely randomized design. The treatments were composed of seeds soaking in 7 GA3 concentrations (0, 50, 100, 250, 500, 750 and 1.000 mg.L-1 of GA3), for 5 hours, with 4 replicates of 25 seeds, and kept at germination chamber. In greenhouse condition, the treatments were composed of the 7 GA3 concentrations and 2 types of packs (styrofoam trays and black polyethylene bags), with 4 replicates of 25 seeds. The evaluations performed at the laboratory consisted of the total percentage of germinated seeds, dormant and dead seeds; total percentage of normal and abnormal seedlings; and germination speed index. The evaluations done at greenhouse conditions consisted of the total percentage of seedlings emergence; emergence speed index; plants height and number of leaves. The datas were subjected to variance analysis and the averages compared by the Tukey test, with 5% probability. The results obtained, suggested that GA3 promoted the increase of the germination of Annona squamosa seeds, and that the black polyethylene bags have been the most adequate for the seedlings development.
plant regulator; seedlings; sugar apple; Annona squamosa L.
