title: [Photosynthetic characteristics of Drynaria fortunei and its relation to environmental factors].
abstract: OBJECTIVE
  To have a better utilization of diurnal photosynthetic variation of Drynaria fortunei in three light environments and provide theoretical basis for its artificial cultivation.
  
  
  METHODS
  Diurnal photosynthetic variation of Drynaria fortunei were determinated by portable photosynthesis analysis system (Li-6400), and correlation between physiological and environmental factors was further analysed.
  
  
  RESULTS
  The diurnal net photosynthetic rate (NPR) exhibited a single peak curve, with the peak value of NPR occurring at 15:30. The mean diurnal Pn of D. fortunei in three environments followed a tread of tree epiphytes > shine > shade. WUE had significantly positive correlation with NPR. Air temperature (Ta), ambient CO2 concentration (Ca) and relative humidity (RH) were the main environmental factors for NPR of D. fortunei.
  
  
  CONCLUSIONS
  The optimum cultivation condition of D. fortunei is 32 degrees C, RH around 40%, and appropriate shade is recommended.
authors.affiliation: College of Biology and Environmental Science, Jishou University, Jishou 416000, China. ligz0000@126.com
authors.forename: Zhao-Yang
authors.initials: ZY
authors.lastname: Li
authors.forename: Xi
authors.initials: X
authors.lastname: Zhou
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Guo-Wei
authors.initials: GW
authors.lastname: Lei
authors.forename: Xiao-Meng
authors.initials: XM
authors.lastname: Du
mesh_terms: D002245:Carbon Dioxide; D004777:Environment; D006813:Humidity; D010788:Photosynthesis / Q000502:physiology* / Q000528:radiation effects; D018526:Plant Transpiration; D029621:Polypodiaceae / Q000254:growth & development / Q000502:physiology* / Q000528:radiation effects; D013472:Sunlight; D013696:Temperature; D014867:Water / Q000378:metabolism
chemical_list: D014867:Water; D002245:Carbon Dioxide