As observed in the germination test (Figure 1), a higher germination rate (Figure 2), both by GRI and GR, was obtained at 25 and 30 oC in the sand substrate. In general, a lower germination rate was observed at 20 oC, with no significant difference in GR between the substrates for lots 1 and 3. Neves et al. (2009) also observed a reduction in the germination rate index in physic nut seeds germinated at 20 oC.