This study was carried out at the Seed Laboratory of Embrapa Roraima, with the objective to study the alleviation of seed dormancy in the Paricarana tree (Bowdichia virgilioides). The experimental design was a randomized complete block design with four replications of 50 seeds each. The treatments were: mechanical scarification with water sandpaper; sulfuric acid - pa (5 and 10 minutes), ethanol (5 and 10 minutes) and the control. The seeds were placed in plastic boxes on moistened paper and incubated at 25ºC in a germinator. The parameters obtained were germination percentage, hard seed percentage, germination rate, percentage of normal seedlings at 30 days after sowing. The germinated seeds were counted daily during 30 days. Chemical scarification with sulfuric acid for 5 minutes was shown to be the most appropriate method for seed alleviation of this species.
Bowdichia virgilioides; germination; dormancy; scarification; tegument permeability
