title: [Genetic diversity and group consistency of breeding strains of Erigeron breviscapus determined by AFLP marker].
abstract: OBJECTIVE
  To analyze the genetic diversity and breeding strains of the E. breviscapus germplasms, in order to provide theoretical information for Erigeron breviscapus breeding.
  
  
  METHODS
  The genetic diversity and genetic structure were assayed to six germplasm resource of E. breviscapus which collected from Yunnna with 11 pairs primers and AFLP molecular marker.
  
  
  RESULTS
  Six hundred and four amplification bands among 636 DNA bands were from six accession of E. breviscapus, which are about 82.40% of total bands. The six germplasms could be divided into three group at the 0. 706 similarity coefficient level. The first category include QS-1, QS-2 and Dali, Shilin, Kunming population. The second category included wild population of Qiubei. The third category included several sample from different district. The mean genetic similarity coefficient of QS-1 and QS-2 was bigger, genetic similarity coefficient range was smaller, hereditary character was more stable. Molecular system clustering analysis showed that the geographical origin of the same part had relative polymerization phenomenon and its genetic relationship was close. Qiubei was a single group possibly relating to the specific genetic basis.
  
  
  CONCLUSIONS
  The analysis of genetic diversity of E. breviscapus by AFLP marker is reliable. The systematic E. breviscapus breeding is feasible.
authors.affiliation: Yunnan Research Center on Good Agriculture Practice for Dominant Chinese Medicinal Materials, Yunnan Agriculture University, Kunming 650201, China. zw_biology2@126.com
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Jian-Jun
authors.initials: JJ
authors.lastname: Wang
authors.forename: Xiang
authors.initials: X
authors.lastname: Wei
authors.forename: Guang-Hui
authors.initials: GH
authors.lastname: Zhang
authors.forename: Jian-Wen
authors.initials: JW
authors.lastname: Yang
authors.forename: Dao-Cong
authors.initials: DC
authors.lastname: Wu
authors.forename: Sheng-Chao
authors.initials: SC
authors.lastname: Yang
mesh_terms: D054458:Amplified Fragment Length Polymorphism Analysis; D001947:Breeding; D049919:Erigeron / Q000235:genetics* / Q000378:metabolism*; D005819:Genetic Markers; D014644:Genetic Variation; D010946:Plants, Medicinal / Q000235:genetics / Q000378:metabolism
chemical_list: D005819:Genetic Markers