中药材2011，Vol.34Issue(3)：336-339,4.
不同种质资源黄连净光合速率的研究
Study on the Net Photosynthesis Rate of Coptis chinensis from Different Types and Production Places
摘要
Abstract
Objective:Evaluate the photosynthesis characteristics of Coptis chinensis and provide theoretical basis for the optimization of Coptis chinensis germplasm resources and variety. Methods: The daily variation of the net photosynthetic rate, transpiration rate,stomatal conductance and intercellular CO2 density in leaf blade were determined by Photosynthesis analyzer, and the net photosynthesis rate of Coptis chinensis from different plant ages, types and production places was compared. Results:The light saturation point in Coptis chinensis was about 500 μmol/m2 · s,light compensation point was about 12. 04 μmol/(m2 · s) ,apparent quantum yield was 0.011.When the temperature was above 33 ℃, the transpiration rate increased but the net photosynthesis rate decreased. There was no significant difference(P ＞0.05)among the net photosynthesis rate of Coptis chinensis from different plant ages. The net photosynthesis rate of the type DA-YE and ZHI-HUA was significantly higher than that of other types( P ＜0.05 ) ;The net photosynthesis rates of specimens from Fubao mountain in Lichuan county of Hubei and Fengmu village in Shizhu county of Chongqing were significantly higher than that of others. Conclusions:The net photosynthesis rate of Coptis chinensis decreased under hight temperation and hight light Different germplasm resources of Coptis chinensis, the net photosynthetic rate had certain differences.关键词
黄连/净光合速率/光饱和点/光补偿点/种质资源分类
医药卫生引用本文复制引用
瞿显友,孙年喜,李隆云,钟国跃,银福军..不同种质资源黄连净光合速率的研究[J].中药材,2011,34(3):336-339,4.基金项目
国家科技攻关计划(2004BA721A32) （2004BA721A32）
国家中医药管理局攻关项目(2004ZX06-1) （2004ZX06-1）
科技部支撑计划(2007BA140803) （2007BA140803）
