九管血光合速率及其生理生态因子日变化研究  

Diurnal variation of photosynthetic rate and its eco-physiological factors of Ardisia brevicaulis Diels

作　　者：向宗化 王旭军[2,3] XIANG Zonghua;WANG Xujun(Forestry Bureau of Sangzhi County,Sangzhi 427199,China;Hunan Academy of Forestry,Changsha 410004,China;Hunan Engineering Research Center for Cultivation and Utilization of Distinctive Bio-resources under Forest,Changsha 410004,China)

机构地区：[1]桑植县林业局,湖南桑植427199 [2]湖南省林业科学院,湖南长沙410004 [3]湖南省林下特色生物资源培育与利用工程研究中心,湖南长沙410004

出　　处：《湖南林业科技》2018年第6期34-37,共4页Hunan Forestry Science & Technology

基　　金：湖南省科技创新平台与人才计划(2016TP2009)

摘　　要：利用Li-COR6400便携式光合作用测定系统对九管血的光合速率日变化进行研究。结果表明:九管血叶片净光合速率日变化呈单峰曲线,其峰值出现在12:00。相关分析和回归分析表明,九管血光合速率的主要影响因子为大气温度。九管血叶片光能利用率和水分利用效率随着光合有效辐射的增强而降低,说明九管血对弱光的利用能力较强。The diurnal variation of net photosynthetic rate of Ardisia brevicaulis Diels and its eco-physiological factors was investigated by using Li-COR portable photosynthesis system.The results showed as following:The diurnal variation of net photosynthetic rate of A.brevicaulis Diels in sunny day varied with single peak curve,and the peaks occurred at 12:00.Correlation analysis and regression analysis showed that the dominantly influencing factor of net photosynthetic rate of A.brevicaulis Diels was atmospheric temperatures(Ta).Light use efficiency(LUE)and water use efficiency(WUE)were decreased with the increase of photosynthetically active radiation(PAR),which indicated that A.brevicaulis Diels has rather greater potential to utilize poor light.

关 键 词：九管血 光合速率 生理生态因子 日变化 

分 类 号：Q949.773.1[生物学—植物学]