“…Plant bioassays are appropriately sensitive and simple in monitoring the toxic effects at the cellular level of chemical compounds (Caritá & Marin-Morales, 2008;Campos-Ventura, & Marin-Morales, 2016). Among them, the root meristem of Allium cepa L. (onion) is considered in the scientific circle as an efficient bioassay for the initial screening of the genetic toxicity of chemical compounds due to the low number of chromosomes (2n = 16), which favors the detection of mitotic spindle or aneugenic defects, and disturbances in the cell proliferation index (Neves, Ferreira, Lima, & Peron, 2014;Bianchi, Mantovani, & Marin-Morales, 2015). It is a test system accepted internationally by research agencies as an instrument of evaluation with accurate sensitivity to analyze the cytotoxicity and genotoxicity of a substance of interest, since the results obtained often show satisfactory similarity to those obtained through animal testing systems and cell cultures (Herrero et al, 2012;Lacerda, Malaquias, & Peron, 2014;Tabrez et al, 2011;Bianchi et al, 2015;Campos-Ventura et al, 2016;Santana et al, 2016).…”