The official rules for seed testing don't establish criterions for accomplishment of germination test for greater number of forest species. Thus, the aim of this work was to define substrate, temperature and method for removing hard seededness for germination test of Stryphnodendron adstringens. They were studied: acid scarification with sulphuric acid for 60 minutes, substrates: vermiculita, rolled towel paper, sand and soil, and temperatures: constant, 20, 25, 30 and 35 ºC, and alternating, 15-35 ºC and 20-30 ºC. They were evalueted by first counting of the test (percentage of normal seedlings at 7 days after sowing), and the percentages of normal and abnormal seedlings, dormant and dead seeds (42 days after sowing), with four replications of 50 seeds. Seeds with hardness removed must be used to evaluate the germination of S. adstringens, in paper substrate and with constant temperature of 25, 30 or 35 ºC or alternating of 20-30 ºC.
Stryphnodendron adstringens; substrate; temperature; dormancy; medicinal plant; forest seed
