Effects of geographical, soil and climatic factors on the two marker secondary metabolites contents in the roots of Rubia cordifolia L.
The growth and quality of medicinal plants depend heavily on environmental variables.The quality of Rubia cordifolia, an important medicinal plant, is determined by the two main chiggate.com secondary metabolites of the root, purpurin and mollugin.However, their relationship with environmental factors has not been studied.In this study, the purpuri