The aim of this work was to evaluate the mutagenicity and the degree of toxicity of two toxic plants, "castor bean" (Ricinus communis) and the "crown-of-thorns" (Euphorbia milii), using infusions of the seeds of Ricinus communis and the latex of the Euphorbia milii, in meristematic cells of Allium cepa, which were analyzed: the mitotic index (IM), the interphasics anomalies (AI), the mitotic cycle anomalies (ACM), and the total of anomalies (TA). The solutions tests were prepared in three concentrations: MT1 - 0.5 g/l, MT2 - 1.0 g/l, MT3 -2.0 g/l, and MT4 as control. From the Euphorbia milii the latex was extracted and was diluted in distilled water in concentrations: CT1 - 0.5 ml/l, CT2 - 1.0 ml/l, CT3 - 2.0 ml/l, and CT4 as control. The results evidenced that Ricinus communis increased the frequency of mitotic cycle anomalies, as well, the interphasics anomalies, demonstrating, a toxic action for the genetic material, through the test of Allium cepa.
Allium cepa test; mutagenicity; toxic plants; Ricinus communis; Euphorbia milii; Euphorbiaceae
