Germination of Handroanthus chrysotrichus seeds (Mart. Ex DC.) Mattos (Ipê-amarelo) in chlorinated water and aqueous extract of chamomile and rosemary Álison Luís Cara, Tainá De Angelis, Laura Sarmento Barros, Amanda Aparecida Carminatto, Mara Angelina Galvão Magenta

Abstract

Handroanthus chrysotrichus (ipê-Amarelo) is found throughout Brazil and widely used in afforestation and environmental recovery, which makes research on breaking dormancy of its seeds desirable. This work evaluated the possible influence of treatments with extracts of chamomile and rosemary, in concentrations of 10, 20 and 100%, as well as chlorinated water, where they remained for 20 hours before planting. The control was done in distilled water. Germination rate (%) and root growth (P, M, G) were analyzed. The seeds submitted to the treatment with rosemary and chamomile extract at 10% and rosemary  extract at 20% germinated at the same day (10th day) and showed the same germination rate as the seeds submitted to the control treatment (80%); with the exception of seeds treated with 20% Rosemary extract, some of the others had greater growth. The other treatments apparently caused an inhibitory action on the germination rate and delayed radicle hatching.