Relationships Among 37 Germplasm Resources of Medicinal Dendrobium Based on ISSR

Genetic relationship of 37 Dendrobium was studied by ISSR technique.Fifteen primers with clear and polymorphic bands were screened out from 72 ISSR random primers.Eighty-nine locus were detected with polymorphic percentage in 100%.As analyzed by NTSYS-PC2.0,the genetic similarity of 37 Dendrobium were ranged from 0.50-0.85 and grouped into 7sub-cluster when the similarity coefficient was 0.55.The results indicated that plants of medicinal Dendrobium were rich in genetic diversity and their genetic relationship could be studied by ISSR technique.