1. Department of Botany; Federal University of São Carlos; Av. Rodovia Washington Luiz, Km 235, Monjolinho CEP 13565-905 São Carlos São Paulo Brazil
2. Allelopathy Group; Department of Organic Chemistry; School of Science; Institute of Biomolecules (INBIO); University of Cadiz; Agrifood Campus of International Excellence (ceiA3) C/Republica Saharaui, no. 7 ES-11510 Puerto Real Cadiz