title: [The degradation on cultivated Gastrodia populations and prevention measures].
abstract: OBJECTIVE
  To propose views and concepts on the degradation of cultivated Gastrodia populations.
  
  
  METHODS
  The differences between natural and cultivated Gastrodia populations were compared and discussed in terms of their biological features, qualities and yields.
  
  
  RESULTS
  There were changes and degradation in biological features and some important properties of yield in cultivated Gastrodia.
  
  
  CONCLUSIONS
  The direct reason of cultivated Gastrodia degradation is the ecological disturbace of forests and the decreasing amount of natural Gastrodia populations; The indirect reason is manual pollination and other changes of the natural growing environment.
authors.affiliation: Three Gorges Tourism Vocational and Technical College, Yichang 443100, China. ycwsb100@126.com
authors.forename: Shao-Bai
authors.initials: SB
authors.lastname: Wang
authors.forename: Chang-Jun
authors.initials: CJ
authors.lastname: Yu
authors.forename: Qi-Xin
authors.initials: QX
authors.lastname: Xu
mesh_terms: D000383:Agriculture / Q000379:methods*; D001487:Basidiomycota / Q000254:growth & development; D003247:Conservation of Natural Resources; D004463:Ecology; D017753:Ecosystem; D031668:Gastrodia / Q000033:anatomy & histology / Q000235:genetics* / Q000254:growth & development*; D014644:Genetic Variation; D010802:Phylogeny; D010946:Plants, Medicinal / Q000235:genetics / Q000254:growth & development*