[Relationship between photosynthetic characteristics and environmental factors in leaves of Pueraria lobata].
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.
Zhou
Hong-ying
HY
College of Agronomy, Shandong Agricultural University, Tai'an 271018, China.
Wang
Jian-hua
JH
Fang
Xin-sheng
XS
Xue
Yong-feng
YF
Zhu
Hai-fang
HF
Dong
Qi-ting
QT
Cai
Ai-min
AM
Fu
Zhi-wen
ZW
Wang
Ling
L
D010788:Photosynthesis / Q000502:physiology*; D018515:Plant Leaves / Q000378:metabolism*; D029908:Pueraria / Q000378:metabolism*