SUPERAÇÃO DE DORMÊNCIA EM SEMENTES DE VINHÁTICO: EFEITO DE TRATAMENTO E PLANTAS MATRIZES

Abstract

The seeds of Plathymenia reticulata have dormancy that needs to be overcome to enable the formation of the seedling. The objective was to evaluate the effects of treatments to break dormancy in P. reticulata seeds, as well as to evaluate the effect of the location of two matrix plants and biometric variables of their seeds. Fruits were collected from two matrix plants, one in Catalão Go and the other in Urutaí Go. The experiment was conducted in the Seeds laboratory of the IFG Campus Urutaí. For the biometric evaluation of the seeds, the length, width, thickness (mm) and the fresh mass (g) of 50 seeds from each matrix were measured. The pre-germination treatments tested were immersion of the seeds in (H2SO4) for five minutes, mechanical scarification with wood sandpaper n° 60 and n° 120, dehusking in the region opposite the hilum, immersion of the seeds in water at 90 °C for five minutes and a control. The biometry of P. reticulata seeds varies according to the site of seed production, which interferes in the overcoming of seed dormancy. The immersion of the seeds in sulfuric acid for five minutes was the most effective method for overcoming dormancy in P. reticulata seeds.