title: [Relationship between photosynthetic characteristics and environmental factors in leaves of Pueraria lobata].
abstract: OBJECTIVE
  To study the relationship between photosynthetic characteristics and environmental factors in leaves of P. lobata.
  
  
  METHODS
  Photosynthetic characteristics and environmental factors were measured by using CIRAS-2 portable photosynthesis system.
  
  
  RESULTS
  The apparent quantum yield in leaves was 0.0173 micromol CO2 x micromol(-1) photon. The dark respiration rate was 2.9333 micromol x m(-2) x s(-1). The light compensation point of photosynthesis was 180 micromol x m(-2) x s(-1). The light saturation point was 1600 micromol x m(-2) x s(-1). The carboxylation efficiency was 0.0338 micromol x m(-2) x s(-1). The light respiration rate was 2.5 micromol x m(-2) x s(-1). The CO2 compensation point was 100 micromol x mol(-1), The CO2 saturation point was 1 600 micromol x mol(-1).
  
  
  CONCLUSIONS
  Photo flux density and air temperature are major environmental factors influencing diumal changes of net photosynthetic rate.
authors.affiliation: College of Agronomy, Shandong Agricultural University, Tai'an 271018, China.
authors.forename: Hong-ying
authors.initials: HY
authors.lastname: Zhou
authors.forename: Jian-hua
authors.initials: JH
authors.lastname: Wang
authors.forename: Xin-sheng
authors.initials: XS
authors.lastname: Fang
authors.forename: Yong-feng
authors.initials: YF
authors.lastname: Xue
authors.forename: Hai-fang
authors.initials: HF
authors.lastname: Zhu
authors.forename: Qi-ting
authors.initials: QT
authors.lastname: Dong
authors.forename: Ai-min
authors.initials: AM
authors.lastname: Cai
authors.forename: Zhi-wen
authors.initials: ZW
authors.lastname: Fu
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
mesh_terms: D010788:Photosynthesis / Q000502:physiology*; D018515:Plant Leaves / Q000378:metabolism*; D029908:Pueraria / Q000378:metabolism*