The research evaluated the temperature and substrate for the germination test of ipê-branco (Tabebuia roseo-alba (Ridl.) Sand.) seeds. The effects on germination of 11 temperatures intervals between 15.0°C and 35.0°C were evaluated in a thermo-gradient table with a daily 8-hour photoperiod . The substrates paper (on top of paper and between papers) and vermiculite (in vermiculite) were analyzed in chambers with daily 8-hour photoperiod at 30°C and 35°C. The seeds and seedlings were evaluated daily, by the criteria indicated in the Brazilian Rules for Seed Testing, and the percentage and germination speed were determined. The most favorable condition for the germination test for Tabebuia roseo-alba seeds was 30°C using paper as substrate.
native seeds; seed analysis; viability
