Print version ISSN 0102-0536
OLIVEIRA, Andreya K et al. Allelopathy of extracts of different organs of coral tree on the germination of lettuce. Hortic. Bras. [online]. 2012, vol.30, n.3, pp.480-483. ISSN 0102-0536. http://dx.doi.org/10.1590/S0102-05362012000300020.
The coral tree (Erythrina velutina) is a fast growing tree with medicinal properties. The aim of this study was to evaluate the allelopathic effects of aqueous extract of seeds, flowers and bark of coral tree on seed germination and seedling development of lettuce cv. Mônica SF FI. The experimental design was completely randomized with seven treatments [seed extract at 100°C, seed extract at 25°C, bark extract at 100°C, bark extract at 25°C, flower extract at 100°C, flower extract at 25°C and distilled water (control)] with four replications. The extracts of seeds, independent of the extraction temperature decreased the percentage and speed of germination of lettuce and affected the development of the seedlings. The other extracts did not affect germination, but caused the appearance of abnormal seedlings and dead. The aqueous extract of seeds of coral tree has allelopathic potential in the seeds of lettuce cv. Mônica SF FI.
Keywords : Erythrina velutina; Lactuca sativa; phytotoxicity; seedling; growth.