title: [Variation of phenolic compound contents of Magnolia officinalis at different levels].
abstract: OBJECTIVE
  To reveal the mutative discipline of the contents of the phenols in samples from different provenances.
  
  
  METHODS
  The contents of magnolol and honokiol in samples from the filial generation of Guanxi, Hubei and Zhejiang provinces were determined respectively by HPLC.
  
  
  RESULTS
  There were significant variations between provenances, the contents of honokiol, magnolol and phenols were the highest in samples from Hubei province, those were the lowest in samples from Zhejiang province. There were not only significant differences in polyphenol content between provenances, but also in families in the same provenance and individuals in families.
  
  
  CONCLUSIONS
  Magnolia polyphenol content and appearance traits were significantly related. The type with the small convex tip (original form) were superior to other types of M. officinalis judging from the characteristics of tree classification. The high quality of M. officinalis should actually be attributed to their local varieties and the breeding strategy of M. officinalis should be paid full attention to the good provenances, good families and good individuals.
authors.affiliation: Institute of Chinese Medicinal Materials, Lishui institute of Forestry Sciences, Lishui 323000, China.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Jiang
authors.forename: Xinhe
authors.initials: X
authors.lastname: Pan
authors.forename: Bo
authors.initials: B
authors.lastname: Zhu
authors.forename: Jinping
authors.initials: J
authors.lastname: Si
authors.forename: Huahong
authors.initials: H
authors.lastname: Huang
authors.forename: Yuqiu
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D031566:Magnolia / Q000737:chemistry*; D010636:Phenols / Q000032:analysis*; D010936:Plant Extracts / Q000032:analysis*
chemical_list: D010636:Phenols; D010936:Plant Extracts