[野葛叶片光合特性与环境因子的关系]

[Relationship between photosynthetic characteristics and environmental factors in leaves of Pueraria lobata].

作者信息

Zhou Hong-ying, Wang Jian-hua, Fang Xin-sheng, Xue Yong-feng, Zhu Hai-fang, Dong Qi-ting, Cai Ai-min, Fu Zhi-wen, Wang Ling

机构信息

College of Agronomy, Shandong Agricultural University, Tai'an 271018, China.

出版信息

Zhongguo Zhong Yao Za Zhi. 2008 Nov;33(22):2595-8.

PMID:19216149

Abstract

OBJECTIVE

To study the relationship between photosynthetic characteristics and environmental factors in leaves of P. lobata.

METHOD

Photosynthetic characteristics and environmental factors were measured by using CIRAS-2 portable photosynthesis system.

RESULT

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).

CONCLUSION

Photo flux density and air temperature are major environmental factors influencing diumal changes of net photosynthetic rate.

摘要

目的

研究地锦叶片光合特性与环境因子之间的关系。

方法

采用CIRAS - 2便携式光合作用系统测定光合特性和环境因子。

结果

叶片的表观量子产额为0.0173微摩尔二氧化碳·微摩尔⁻¹光子。暗呼吸速率为2.9333微摩尔·米⁻²·秒⁻¹。光合作用的光补偿点为180微摩尔·米⁻²·秒⁻¹。光饱和点为1600微摩尔·米⁻²·秒⁻¹。羧化效率为0.0338微摩尔·米⁻²·秒⁻¹。光呼吸速率为2.5微摩尔·米⁻²·秒⁻¹。二氧化碳补偿点为100微摩尔·摩尔⁻¹，二氧化碳饱和点为1600微摩尔·摩尔⁻¹。