Monosaccharide compositions of Codonopsis pilosula polysaccharides and their correlation analysis on cytotoxic activities against HepG2 cells Tetraploidy Inducement of Codonopsis pilosula (Franch.) Nannf. by Colchicine Establishment of quality evaluation system and difference analysis on roots of Codonopsis pilosula from different habitats Effects of different processing methods on Codonopsis pilosula seed germination and seedling growth Establishment of quality evaluation system and difference analysis on roots of Codonopsis pilosula from different habitats