Random amplified polymorphic DNA(RAPD) markers were used to study the genetic relationship and genetic diversity of 20 cultivars of Hyacinth orientalis.Twelve primers out of sixty RAPD markers were selected to analyze 20 cultivars of Hyacinth orientalis which generated 93 DNA fragments,including 67 polymorphism fragments accounting for 72.0% of the total.Based on those polymorphism fragments,we assessed genetic similarity coefficient and dendrogram by using NTSYS-pc(Version 2.10e).The result indicated that ...