The species Erythroxylum argentinum, Luehea divaricata, Myrsine guianensis and Ocotea puberula were evaluated in order to investigate the allelopathic potential of native plants. Germination and growth bioassays were performed in Petri dishes, using lettuce as target plant. The achenes and seedlings were treated with aqueous extracts of the test species dried leaves obtained from static maceration with cold and hot water. Lettuce germination was slightly altered only by E. argentinum and L. divaricata extracts. The target plant growth was inhibited by test species extracts, with significant root reductions. These results demonstrated that the four evaluated species present allelopathic potential.
allelopathy; Erythroxylum argentinum; Luehea divaricata; Myrsine guianensis; Ocotea puberula
