FARIAS, André Rodrigues de.
Résumé:
The germination of seeds of many species of the semiarid region is poorly studied and is
considered of great importance to aid in the production of seedlings for reforestation
programs. In this sense, the research was conducted in the Laboratory of Ecology and Botany
of UFCG / CDSA campus of Sumé-PB, aiming to determine the best method of breaking
dormancy of seeds of Erythrina velutina Willd. in riparian areas of Caatinga. For testing
dormancy seven pre-germination treatments were used: control - intact seeds (T1);
mechanical scarification on sandpaper in 80 next to the hilum (T2); mechanical scarification
near the hilum with soaking in water at room temperature for 72 hours (T3); Scarification on
both ends without soaking (T4); Scarifying the two ends with immersion in water at room
temperature for 72 hours (T5); Immersion in water at room temperature for 72 hours (T6); and
mechanical scarification on sandpaper in 80 opposite the micropyle (T7) and evaluated
parameters: germination, speed of germination, seedling length and seedling dry matter.
According to the data obtained it was found that manual scarification with sandpaper no. 80
opposite the micropyle and both ends without immersion was considered the most effective
treatment to break dormancy of seeds of this species in the semiarid region.