】 ixty five indexes on community,morphology,dissection ,physiology ,biochemistry,genetics, metabolism and others were selected for the first time to make the principal compo-nent analysis and the fuzzy cluster analysis for different ecotypes of reed(Phragmites commu-nis Trin).The results showed that for the ecotypes of reed studied there were the mostsignificant differences in the indexes,such as biomass, dry weight per shoot,shoot height,levels of soluble protein and RNA, activities of DNase and RNase ,with ...