摘要
采用光合作用测定系统C IRAS-2以2 s的间隔时间采集数据,对日光温室茄子光合进程进行了瞬态测试,发现光合的非稳态性。结合光强和CO2浓度的阶梯式处理进行瞬态测试以及瞬态光合进程的回归、相关分析发现,C i和Ca对Pn非稳态性的作用最大,其次是Gs、E和PAR,而T1和RH的作用很弱;瞬态C i与Pn变化呈镜像反式,为极显著或显著负相关性;瞬态Gs与Pn未达到显著相关性。
Transient photosynthesis was measured by an interval of 2 s, and unsteady-state photosynthesis CIRAS-2 of PP Systems Ltd. at automatic recording was found in greenhouse aubergine. By combining the transient measurement at the step treatment on photosynthetic available radiation （PAR） and ambient CO2 concentration Ca in greenhouse with regression and correlation analysis of transient photosynthesis course, it was found that effects of intercellular CO2 concentration Ci and Ca on unsteady-state photosynthesis were the strongest, followings were stomatal conductance Gs, transpiration rate E and PAR, and T1 and RH the least. At the same time, there was significant negative correlation at the P0.01 or P0.05 level between Ci and net photosynthetic rate Pn, but no correlation between Gs and Pn.
出处
《园艺学报》
CAS
CSCD
北大核心
2005年第4期624-627,共4页
Acta Horticulturae Sinica
基金
河北省科学技术厅科技攻关项目(03220139D)
河北省农业综合开发科技推广项目(2004)
关键词
日光温室
茄子
瞬态光合
非稳态光合
Greenhouse
Auhergine
Transient photosynthesis
Unsteady-state photosynthesis
