Estudo de diferentes tratamentos pré-germinativos em sementes de Erythrina velutina Will.

Abstract

The surveys were conducted in the Laboratory of Ecology and Botany of UFCG / CDSA, campus Sumé-PB, in order to determine the best method of scarification, Erythrinavelutina seeds Milld. in riparian areas of Caatinga. For numbness tests were used seven pre-germination treatments: control - intact seeds (T1); mechanical scarification on sandpaper on 80 near the hilum (T2); next chiseling the hilum with immersion in water at room temperature for 72 hours (T3); Scarification at both ends without soaking (T4); Scarification at both ends with immersion in water at room temperature for 72 hours (T5); Soaking in water at room temperature for 72 hours (T6); and mechanical scarification on sandpaper in 80 opposite the micropyle (T7), and evaluated the physiological quality. According to the data obtained it was found that the scarification of the seed coat with no sandpaper. 80 opposite the micropyle and both ends without soaking was considered the most effective treatment for overcoming seed dormancy.