摘要
应用新的光响应曲线模型重新拟合了超级杂交稻新组合-Ⅱ优明86的测量数据。结果表明,光合速率与光强有非线性关系,既使光强在光补偿点以下这种非线性关系也存在。利用光合作用的测量数据,新模型不仅可以计算出超级杂交稻新组合-Ⅱ优明86的饱和光强、最大光合速率、暗呼吸速率,还可以准确地计算出内禀量子效率、光补偿点处的量子效率和表观量子效率。重新拟合超级杂交稻新组合-Ⅱ优明86的饱和光强为1314.13μmol.m-2.s-1,最大光合速率为25.49μmolCO2.m-2.s-1,这些数据与实验测量符合较好。其内禀量子效率为0.103,表观量子效率为0.078,在光补偿点处的量子效率为0.090。
A new light-response model was applied to fit the measured data on the photosynthesis of super-hybrid rice combination-Ⅱ Youming 86. The results showed that there was a nonlinear relationship between photosynthesis rate and light intensity, even if the light intensity was in the vicinity of light compensation point. By using the measured data, not only the saturation light intensity, maximum photosynthesis rate, and dark respiration rate could be calculated, but also the intrinsic quantum yield, quantum yield at light compensation point, and apparent quantum yield could be accurately figured out. The fitted optimal light intensity and maximum photosynthesis rate were 1314.13μmol.m-2.s^-1 and 25.49μmolCO2.m^-2.s^-1, respectively, being accor nded well with the measured ones. The intrinsic quantum yield, apparent quantum yield and quantum yield at light compensation point was 0. 103, 0. 078 and 0. 090, respectively.
出处
《生态学杂志》
CAS
CSCD
北大核心
2007年第8期1323-1326,共4页
Chinese Journal of Ecology
基金
江西省科技厅农业攻关资助项目(2006)
关键词
光响应曲线模型
饱和光强
最大光合速率
内禀量子效率
表观量子效率
光补偿点处的量子效率
light-response curve model of photosynthesis
saturation light intensity
maximumphotosynthesis rate
intrinsic quantum yield
apparent quantum yield
quantum yield at lightcompensation point
