Alelopatia de extratos de diferentes órg？os de mulungu na germina？？o de alface

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. m？nica 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. m？nica sf fi.