Comparison of Leaf Morphology in Different Ploidies of Dioscorea zingiberensis Discovery of natural triploid variations of Dioscorea zingiberensis and its evaluation of main economic qualities Water-soluble constituents from Dioscorea zingiberensis Biocatalyticacidhydrolysisofdiosgeninin Dioscoreazingiberensis through polyOxethyleneoxide-maleic acidanhydridemodified cellulose enzyme Dynamic Changes of the Contents of Calcium,Zinc and Phytate in the Rhizomes of Dioscorea zingiberensis C.H.Wright Studies on diversity of diosgenin in different part of rhizome of Dioscorea zingiberensis in various growing period Process of extracting diosgenin from Dioscorea zingiberensis by grinding starchand ultrasonic extracting method Comparison of physiological index and diosgenin content in different ploidy of Dioscorea zingiberensis Inducement of tetraploid Dioscorea zingiberensis