Germination test on paper roll: seeds were distributed on two sheets of paper towel, sterilized in an oven at 120 °C for an hour, and moistened with water equivalent to 2.7 times the weight of the dry substrate, according to the results obtained in preliminary tests. Then, the seeds were covered with a sheet of paper and rolled up. Germination test in sand: 1500 mL polypropylene boxes were used; they contained sand that was washed, sterilized and moistened until 60% water-holding capacity, according to Brasil (2009). Sowing was done about 1.5 cm deep.