Growth, yield and metabolite substantiated, eco-physiological evaluation of overcoming accessional and agro-climatic differences in ex-situ raised Valeriana jatamansi Jones. at lower altitude of Sikkim Himalayan region

Valeriana jatamansi Jones. syn. V. wallichi (Family: Caprifoliaceae) is globally known and amongst the 27 listed medicinal plants under National AYUSH Mission (NAM) by National Medicinal Plants Board, New Delhi, Government of India. V. jatamansi is a temperate Himalayan critically vulnerable plant enlisted as plants of conservation concern under Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) Appendix-II with regulated foreign trade. Deplete wild population of V. jatamansi has prioritized con-servation via ex-situ raising. The study conducted for V. jatamansi ex-situ raising at Sikkim Himalayan low altitude (tropical hills) region in different potting mix and evaluated for growth, yield and metabolite content substantiated with eco-physiological parameters. The eco-physiological parameters include pigment variations, stability, and the amount of hydroxyvalerenic acid & valerenic acid in below ground quantified using reversed phase-high performance liquid chromatography (RP-HPLC). The study reveals black soil (BS), forest soil (FS), Vermi-compost (VC) and Sand (S) favoured the growth and yield. This is also substantiated by the eco-physiological parameters. The soil nutritional and physical parameters favour higher metabolites hydrox-yvalerenic acid and valerenic acid accumulation. The study leads to successful plants raising with increased metabolites. The study paves the way forward, overcoming accessional and agro-climatic differences in growth, yield and metabolite, as appropriately monitored potting media help in consistent & optimized yield and me-tabolites in V. jatamansi.