title: [Comparison of net photosynthetic rate changes in different species of Siraitia grosvenorii in late growth period].
abstract: OBJECTIVE
  To analyze the relationship between the net photosynthetic rate and the quality of Siraitia grosvenorii.
  
  
  METHODS
  Taken two species of S. grosvenorii: Yongqing No. 1 and Yehong No. 1 as the experimental material, CI-310 portable photosynthesis system was used to test the net photosynthetic rate in the late growth period; HPLC was used to determine momordica-glycosides V.
  
  
  RESULTS
  Light compensation point of Yongqing No. 1 was lower than that of Yehong No. 1 and the light saturation point was identical, the weight of dried fruit and the content of momordica-glycosides V of Yongqing No. 1 were higher than those of Yehong No. 1 at the late growth period.
  
  
  CONCLUSIONS
  The net photosynthetic rate can be used as an important subservient index to assess the quality of S. grosvenorii.
authors.affiliation: Forestry College of Guangxi University, Nanning 530005, China.
authors.forename: Yongjin
authors.initials: Y
authors.lastname: Zhai
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Ma
authors.forename: Jiaye
authors.initials: J
authors.lastname: Lai
authors.forename: Haiying
authors.initials: H
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Ma
authors.forename: Changming
authors.initials: C
authors.lastname: Mo
mesh_terms: D019662:Cucurbitaceae / Q000254:growth & development* / Q000378:metabolism; D010788:Photosynthesis