title: [Quality classification criteria of Oldenlandia diffusa seeds].
abstract: OBJECTIVE
  To establish the quality classification criteria of Oldenlandia diffusa seeds.
  
  
  METHODS
  Thirty batches of O. diffusa seeds from different provenances with different collecting time were selected. And the seed germination percentage, seed purity, weight per 1 000 grains, moisture content and seed viability were determined and analyzed through SPSS 11.0 software.
  
  
  CONCLUSIONS
  Seed germination percentage was selected as the main index for classification, while seed purity, weight per 1 000 grains and moisture content could be used as references. The quality classification criteria of O. diffusa seeds have been initially established.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Lu
authors.forename: Zaibiao
authors.initials: Z
authors.lastname: Zhu
authors.forename: Qiaosheng
authors.initials: Q
authors.lastname: Guo
authors.forename: Shan
authors.initials: S
authors.lastname: Feng
authors.forename: Zijun
authors.initials: Z
authors.lastname: Ning
authors.forename: Yayue
authors.initials: Y
authors.lastname: Cao
mesh_terms: D018525:Germination; D008516:Medicine, Chinese Traditional / Q000592:standards*; D032067:Oldenlandia / Q000254:growth & development / Q000502:physiology; D009929:Organ Size; D011786:Quality Control; D012639:Seeds / Q000254:growth & development / Q000502:physiology