Occurrence and Control of Abnormal Somatic Embroys in Saposhnikovia divaricata Tissue Culture Simultaneous determination of chromones and coumarins in roots of Saposhnikovia divaricata from Longxi area by HPLC Studies on intrinsic inhibitor activity in seed of dried root of Saposhnikovia divaricata Study on correlation between volatile oil and rhizosphere soil from roots.of Saposhnikovia divaricata