Germinação de sementes de Bauhinia Brevipes Voguel, uma espécie pioneira do cerrado

Abstract

This study aimed to investigate the factors that influence the germination and viability of Bauhinia brevipes Vogel seeds, a pioneer species from the Brazilian Cerrado. Experiments were conducted to evaluate the effects of different treatments, such as scarification and heat exposure, as well as the influence of seed size, storage time, and drying on germination. The results showed that intense heat drastically reduced seed viability, especially when subjected to high temperatures for short periods. Manual scarification accelerated water imbibition and favored germination. Regarding size, larger seeds showed slower and more continuous water absorption, while smaller seeds absorbed it quickly but stabilized at a lower final mass. Prolonged storage significantly compromised viability, with high mortality observed after three years. Similarly, drying gradually reduced water content and germination over time. Overall, the results confirm that physical, physiological, and environmental factors directly affect the germination of B. brevipes, making this knowledge essential for conservation practices, restoration of degraded areas, and sustainable use of native Cerrado species.