title: [Primary study on measuring the internal transcribed spacer I regions of rRNA genein seeds of Gentiana dahurica].
abstract: OBJECTIVE
  To amplify the PCR with the internal transcribed spacerl regions measure the base sequence of the amplified products of DNA, and to set up an identified standard on the level of molecule.
  
  
  METHODS
  DNA from the seeds of G. dahurica was extracted by conventional method, and composed peculiar primer was used to amplify with the internal transcribed spacerl regions of the rRNA gene, and the base sequence of the amplified products by stopping the circle of the end of double deoxidation of four color fluorescent mark was measured.
  
  
  RESULTS
  It was proved by agar sugar gel electrophoresis that the PCR amplified products of the internal transcribed spacerl regions of the rRNA gene existed. The base sequence of the seeds of G. dahurica's internal transcribed spacerl regions of the rRNA gene was measured.
  
  
  CONCLUSIONS
  To measure the base sequence of internal transcribed spacerl regions of the rRNA gene in the seeds of G. dahurica's is a method to identify vegetal Chinese traditional medicine on the level of molecule.
authors.affiliation: Gansu College of Traditional Chinese Medicine, Gansu 730000, Lanzhou, China.
authors.forename: Ke-ping
authors.initials: KP
authors.lastname: Ji
authors.forename: Xi-ling
authors.initials: XL
authors.lastname: Zhang
authors.forename: Li-sha
authors.initials: LS
authors.lastname: Liu
authors.forename: Quan-yun
authors.initials: QY
authors.lastname: Lu
authors.forename: Che
authors.initials: C
authors.lastname: Cheng
mesh_terms: D001483:Base Sequence; D018744:DNA, Plant / Q000235:genetics*; D021903:DNA, Ribosomal Spacer / Q000235:genetics*; D030012:Gentiana / Q000235:genetics*; D008969:Molecular Sequence Data; D010946:Plants, Medicinal / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012335:RNA, Ribosomal / Q000235:genetics*; D012639:Seeds / Q000235:genetics
chemical_list: D018744:DNA, Plant; D021903:DNA, Ribosomal Spacer; D012335:RNA, Ribosomal