[Effects of S-3307 on photosynthesis of Ligusticum chuanxiong].
OBJECTIVE
To study the effects of S-3307 spraying time and density on photosynthetic characteristic of Ligusticum chuanxiong.


METHODS
The photosynthetic characteristic of L. chuanxiong under different S-3307 spraying time and density was studied by plot cultivation experiment.


RESULTS
The content of chlorophyll a and chlorophyll b in leaf increased when the spraying density was 20, 40, 80 mg x L(-1), while the net photosynthetic rate was the maximum. When the spraying density was 160 mg x L(-1), the content of chlorophyll a and chlorophyll as well as net photosynthetic rate were not increased.


CONCLUSIONS
S-3307 spraying can raise the photosynthetic capacity of L. chuanxiong and promote the form of assimilation products.
Zhao
Dong-ping
DP
College of Agronomy, Sichuan Agriculture University, Ya'an 625014, China.
Yang
Wen-yu
WY
Chen
Xing-fu
XF
Yao
Xiong
X
D002734:Chlorophyll / Q000378:metabolism; D030004:Ligusticum / Q000187:drug effects / Q000378:metabolism*; D010788:Photosynthesis / Q000187:drug effects*; D010937:Plant Growth Regulators / Q000494:pharmacology*
D010937:Plant Growth Regulators; D002734:Chlorophyll