Meng  Zhang, Guoqin  Zhuang, Xiaoxu  Qin, Xia  Chen, Yunjie  Gu, Xiaoqing  Li, 
    Studies on Photosynthetic and Fluorescence Characteristics of Young and Mature <I>Magnolia officinalis,
    Agricultural Journal,
    Volume 9,Issue 2,
    2014,
    Pages 108-112,
    ISSN 1816-9155,
    aj.2014.108.112,
    (https://makhillpublications.co/view-article.php?doi=aj.2014.108.112)
    Abstract: The 1 year and 5 years old <I>M</I>. <I>officinalis</I> cultivated 
  in Linfeng Village Beichuan county were detected using the Li-6400XT and PAM-2500 
  in a sunny day. The results showed that Photosynthetic rate (Pn), Transpiration 
  rate (Tr), stomatal conductance (Gs), NPQ and Fv/Fm of 5 years old <I>M. officinalis</I> 
  were higher than that of 1 year old <I>M</I>. <I>officinalis</I>. The 5 years 
  old <I>M</I>. <I>officinalis</I> was thought to be a better suitable for wider 
  living site after comparative analyzing both the photosynthetic and fluorescence 
  parameters.
    Keywords: Magnolia officinalis;photosynthetic characteristics;fluorescence characteristics;NPQ;comparitive analyzig