title: [Study on optimal harvest time of Erigeron breviscapus].
abstract: OBJECTIVE
  To ascertain the optimal harvest time of Erigeron breviscapus.
  
  
  METHODS
  The dry matter weight accumulation of different organs in growth process and contents of scutellarin and coffeic acid ester in whole plant of E. breviscapus were determined.
  
  
  RESULTS
  The number of leaves per plant, the dried weight of single leaf and dry matter weight of whole plant and different organs reached the highest after seedling 130-140 d. The content of scutellarin gradually decreased with growth period, and sharply decreased after seedling 140 d. The content of coffeic acid ester varied irregularly with growth period.
  
  
  CONCLUSIONS
  The optimal harvest time of E. breviscapus is in early bloom period after seedling 130 d.
authors.affiliation: Institute of Chinese Medicinal Materials of Yunnan Agricultural, University Yunnan Provincial Center of Chinese Medicinal Materials' Good Agriculture Practice Technology, Kunming 650201, China.
authors.forename: Sheng-chao
authors.initials: SC
authors.lastname: Yang
authors.forename: Xue-feng
authors.initials: XF
authors.lastname: Zhang
authors.forename: Li-mei
authors.initials: LM
authors.lastname: Zhang
authors.forename: Li-xian
authors.initials: LX
authors.lastname: Liu
authors.forename: Yong-jian
authors.initials: YJ
authors.lastname: Yang
authors.forename: Feng-hui
authors.initials: FH
authors.lastname: Xiao
mesh_terms: D047310:Apigenin / Q000032:analysis; D018533:Biomass; D049919:Erigeron / Q000737:chemistry / Q000254:growth & development*; D051639:Gardening; D005965:Glucuronates / Q000032:analysis
chemical_list: D005965:Glucuronates; C484876:scutellarin; D047310:Apigenin