Studies on chemical constituents of root of Polygala tenuifolia (Yuanzhi) Ⅰ Morphogenesis and Histochemistry of Root in Polygala tenuifolia Progress in studies on Polygala tenuifolia Relationship between Structural Development and Accumulation of Saponins in the Root of Polygala tenuifolia Willd Analysis on fat-soluble components in different parts of Polygala tenuifolia from different habitats by GC-MS Phylogeography of Polygala tenuifolia inferred from chloroplast DNA trnL intron sequence variation Developmental and Anatomical Studies on the Root of Polygala tenuifolia Willd. Comparison of Structure and Senegenin Content of Roots in Polygala tenuifolia Willd and P.sibirica L. ISSR Analysis for genetic diversity of Polygala tenuifolia in its main production area Chemical constituents of Polygala tenuifolia Analysis on fat-soluble components in different parts of Polygala tenuifolia from different habitats by GC-MS Effect of prometryne on root activity and oxidative stress of Polygala tenuifolia Willd. seedling roots Effect of oligosaccharide esters and polygalaxanthone Ⅲ from Polygala tenuifolia willd towards cytochrome P450