Vegetative propagation and proposal for sustainable management of Valeriana carnosa Sm., a traditional medicinal plant from Patagonia

NAGAHAMA NICOLÁS; MARIA M. MANIFESTO; RENÉE H. FORTUNATO

Journal of Applied Research on Medicinal and Aromatic Plants

Elsevier GmbH

Año: 2019

Valerianacarnosa is an importantmedicinal herb in the Patagonian popular medicine. The underground parts ofthis native species are used for the preparation of various formulations in thetraditional health system for treatment of hepatic, circulatory, urinary and digestive disorders as well as havinganalgesic, anti-inflammatory and anti-depressive properties. Although V.carnosa is one of the most used medicinal plants in Patagonia, currentlythe raw material (roots and rhizomes) is obtained from natural populations. Theaim of this study was to generate novel tools for stimulating in situ cultivation of V. carnosa to improve the sustainablemanagement of this phytomedicinal resource and the quality control of itscommercial plant material. The agamic multiplication of V. carnosa was tested, applying different concentrations of indole-3-butyric acid (IBA), α-naphthaleneacetic acid (NAA) and a commercial rooting mix product (containing NAA 3000ppm) inleafless and leafy cuttings. Theapplication of NAA was more effective than IBA to stimulate roots development instem cuttings. The results indicate that leafy cuttings treated with NAA (1000 ppm and3000 ppm) give 40-60 propagules from each adult mother plant, ensuring significantly (p < 0.05) higher rooting percentages. To determine the effect of the phytohormones applicationon the root system development, five morphological root variables were analyzedby non-parametric analysis of variance (Kruskal?Wallis) at P-value (0.05)significance levels and differences were observed depending on the treatmentused. In this study we propose: 1- an efficient and inexpensive protocol forvegetative multiplication, and 2- provide information for in situ cultivation of V.carnosa in Patagonia.