HPLC-Fingerprint of Qinghai genuine medicinal herb--Gentiana straminea Non iridoid constituents from roots of Gentiana straminea The causes of Gentiana straminea Maxim. seeds dormancy and the methods for its breaking Genetic diversity of germplasm resources of Gentiana straminea from Tibet of China Effects of Enhanced UV-B Radiation on Antioxydative Enzymes in Gentiana straminea Leaves Diurnal Comparison of the Net Photosynthetic Rates and Chlorophyll Fluorescent Parameters of Gentiana straminea Maxim.in Xining and Haibei Determination and evaluation of two iridoids in Gentiana straminea herbs by HPLC HPLC Fingerprinting of Gentiana straminea,a Traditional Chinese Medicine from Qinghai Province