title: [Study on seed quality test and quality standard of Platycodon grandiflorum].
abstract: OBJECTIVE
  To study quality test, and establish quality classification standard of Platycodon grandiflorum.
  
  
  METHODS
  The seed quality and planting quality of P. grandiflorum from different producing areas and in different growing years were measured.
  
  
  CONCLUSIONS
  The range of seed purity, weight per 1000 seeds, seed moisture content,seed viability were determined and the primary seed quality classification standard was established.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China. gqs@herbstimes.com
authors.forename: Qiao-Sheng
authors.initials: QS
authors.lastname: Guo
authors.forename: Rong-Mei
authors.initials: RM
authors.lastname: Zhao
authors.forename: Liu
authors.initials: L
authors.lastname: Liu
authors.forename: Qi-Ting
authors.initials: QT
authors.lastname: Dong
authors.forename: Zhi-Wen
authors.initials: ZW
authors.lastname: Fu
mesh_terms: D018525:Germination / Q000502:physiology; D010946:Plants, Medicinal / Q000033:anatomy & histology / Q000737:chemistry / Q000502:physiology*; D031238:Platycodon / Q000033:anatomy & histology / Q000737:chemistry / Q000502:physiology*; D011786:Quality Control; D012015:Reference Standards; D012639:Seeds / Q000033:anatomy & histology / Q000737:chemistry / Q000502:physiology*; D014867:Water / Q000032:analysis / Q000592:standards
chemical_list: D014867:Water