Journal of Medicinal Plants Biotechnology

Abstract It is essential to use corrective techniques in the cultivation of medicinal plants and to improve the quantity and quality of the essential oils and essence in them for the production of high-yielding plants. The influence factors in callus production and regeneration include genotype, growth regulators, culture medium, age and type of explants and environmental conditions. In this study, callus induction in seven plant species (Daucus carota, Dracocephalum kotschyi, Hyssopus officinalis, Galega officinalis, Amsonia tubemaemontana, Moringa oliefera, Urtica dioica) has been investigated in vitro, which were evaluated callus induction and organogenesis on the leafy specimen in MS and WPM medium with different concentrations of growth regulators. For this purpose, a factorial experiment was designed in a completely randomized design (CRD) and was investigated genotypic effects on callus induction and subsequent proliferation of the plant. The results showed that Daucus carota, Moringa oliefera and Hyssopus officinalis had a significant difference in callus induction with other species.

Abstract Datura metel L. is an important medicinal plant that is a part of the Solanaceae family and contains important pharmaceutical compounds, including atropine and hyoscine (scopolamine), which is part of the tropane alkaloids and has known anticholinergic properties. In recent years, callus tissue induction has been introduced as a new method for obtaining secondary metabolites. The aim of this study was to inoculate callus from the isolated leaves of Datura seedlings to obtain the best hormonal concentration for maximum callus production. Datura seeds were cultured in MS medium under sterile conditions and Datura seedlings were obtained. The leaves of the seedlings were isolated and transferred to the MS medium without hormone, but the callus did not occur. In the next step, the leaves of the seedlings were transferred to the MS medium in 9 hormonal treatments containing different concentrations of auxin 2,4-D and cytokinin kinetin (Kin). the samples with light period was 16 hours of light and 8 hours of darkness and temperatures of 25 ° C for four week. The results showed that maximum callus formation in MS medium containing two hormones with concentrations of 1 mg/L 2,4-D and 1 mg/L Kin was obtained.