Induction of Phytoalexin gliceolin in soybean by homeopathic medicines

The aim of this study was to evaluate the induction of phytoalexin gliceolin in soybean cotyledons by homeopathic products Nosode of Macrophomina phaseolina, Sulphur, Arsenicum album and Sepia. Two experiments were conducted to assess the inducing activity of phytoalexin gliceolin being the first using the homeopathic medicines Nosode of Macrophomina phaseolina and Sulphur and in the second test it was used the homeopathic medicines Arsenicum album and Sepia. In both assays, the boosting used were 6, 12, 24, 36 and 48CH. As additional treatment we used distilled water and hydroalcoholic solution at 30% of ethanol. The experimental design was randomized blocks, with five repetitions. The Nosode treatments did not induce phytoalexin synthesis, unlike Sulphur product which gave an increase of up to 85% in the production of this compound. The Arsenicum album treatment did not induce phytoalexin synthesis, unlike Sepia medicament which afforded an increase of up to 166% the production of this compound. These results indicate the potential of these homeopathic medicines in inducing phytoalexins gliceolin.