Phytotoxicity of Seed Extracts, a Mixture of Phenylphenalenones.

Phenylphenalenones, metabolites found in (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model () and a monocotyledonous model () was evaluated through germination and seedling growth tests.