Avaliação de temperaturas e substratos na germinação de sementes de Jacaranda mimosifolia D. Don

Jacaranda mimosifolia D. Don is a forest species from the Bignoniaceae family with high potential for landscapingin urban areas. The objective of this study was to evaluate the effect of temperature and substrate on J. mimosifolia seedgermination. The experimental design was completely randomized in 4 x 4 factorial arrangement, in a totalof 16 treatments comprising the combinations of four temperatures (20, 25, 30, and 25-30 °C) and four substrates (sand, commercial substrate, on germitest paper, and between germitest paper), with four replications of 25 seeds each. The following parameters were evaluated: first germination count, germination, germination speed,and length of normal seedlings.Thetemperature of 25 °C, combined with the sowing of seeds between germitest paper and on germitest paper are the mostsuitable conditions to carry outgermination tests on J. mimosifolia seeds.