title: [Relationship between seedling grade of angelica and biomass accumulation and quality of product].
abstract: OBJECTIVE
  To research the relationship between the seedling grade of angelica and the biomass accumulation, output and quality of product, so as to provide base for establishing seedling standard.
  
  
  METHODS
  Thirty seedlings of Angelica were collected from the main production area in Gansu province, such as Minxian, Zahngxian, Dangchang and Weiyuan county, all the samples were measured with weigh of single seedling and the seedling were divided into three grade by the clustering analysis results, the grade were made to treatment to do field test and laboratory experiment.
  
  
  RESULTS
  The weigh of dry root, above ground and the whole plant in growth period of treatment 2 (the weigh of single seedling between 0.74-1.38 g) were all superior to other treatments and the ck. The treatment 2 had low bolting percentage, the weigh of single root was higher and the yield was the highest. The characters of product from the treatment 2 was well and the content of ferulic acid was higher than the standard of Chinese pharmacopoeia (2010 year part 1).
  
  
  CONCLUSIONS
  The plant from the grade 2 seedling with larger growth increment, higher output and better quality, which can be the best seedling in production.
authors.affiliation: Gansu College of Traditional Chinese Medicine, Lanzhou 730000, China. gslzdt@163.com
authors.forename: Tao
authors.initials: T
authors.lastname: Du
authors.forename: Zeng-xiang
authors.initials: ZX
authors.lastname: Guo
authors.forename: Hui-zhen
authors.initials: HZ
authors.lastname: Wang
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wang
authors.forename: Hong-gang
authors.initials: HG
authors.lastname: Chen
authors.forename: Jia
authors.initials: J
authors.lastname: Hou
authors.forename: Ying-dong
authors.initials: YD
authors.lastname: Li
mesh_terms: D029969:Angelica / Q000737:chemistry / Q000254:growth & development; D018533:Biomass; D008516:Medicine, Chinese Traditional / Q000592:standards*; D036226:Seedlings