In order to obtain a process to accelerate the germination of Mimosa caesalpiniaefolia
Benth. seeds, it took place an experiment at Laboratório de Análise de Sementes do CCA-UFPB,
in Areia-PB, in completely randomized design with the treatments distributed in outline factorial
7x2, with the factors treatments for pre-germination (chemical and mechanics) and classes of
seeds (clear seeds and dark seeds) in temperatures (constant of 25, 30oC), in four replications of
25 seeds. The chemical scarification consisted either in the immersion of the seeds in sulfuric
acid, with 95% of concentration for seven, 10 and 13 minutes or in boiling water for one and two
minutes. The mechanical scarification was applied by means of a cutting in the tegument in the
opposite side of the embryonic axis and the control (the control was represented by intact seeds).
Germination and vigor tests were used, where it were analyzed the following parameters: percentage
of seeds germinated (%), percentage of germination, first germination count, germination speed
index (IVG) and dry weight matter of the seedlings. By considering the results, it was observed
that the immersion treatments in sulfuric acid for 10 or 13 minutes and the cutting in the tegument
were the most efficient for the break of seeds dormancy, while the immersion in hot water was the
less efficient treatment and the clear and dark seeds presented similar performance, with better
acting under the temperature of 25oC.