PRINCIPAL COMPONENT ANALYSIS AND FUZZY CLUSTER ANALYSIS FOR DIFFERENT ECOTYPES OF REED(PHRAGMITE SCOMMUNIS TRIN)BASAD ON THEIR INDEXES Assessment of Genetic Relationships between the Flue-cured Tobacco Varieties by RAPD and ISSR Markers Genetic Diversity and Phylogenetic Relationship of Flower-lotus Cultivars(Nelumbo) by RAPD Markers