大气CO2与温度升高对北方冬小麦旗叶光合特性、碳氮代谢及产量的影响
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宗毓铮,张函青,李萍,张东升,林文,薛建福,高志强,郝兴宇
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Effects of Elevated Atmospheric CO2 Concentration and Temperature on Photosynthetic Characteristics, Carbon and Nitrogen Metabolism in Flag Leaves and Yield of Winter Wheat in North China
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ZONG YuZheng,ZHANG HanQing,LI Ping,ZHANG DongSheng,LIN Wen,XUE JianFu,GAO ZhiQiang,HAO XingYu
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表4 CO2浓度和气温升高对小麦灌浆期叶片CO2响应参数的影响
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Table 4 Effects of elevated CO2 and increased temperature on A-Ci curves of wheat at filling stage
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处理
Treatment | | 饱和胞间CO2浓度
Saturated intercellular CO2 concentration (Cisat) (μmol·mol-1) | CO2补偿点
CO2 compensation point (Γ)
(μmol·mol-1) | 最大光合能力
Photosynthetic capacity (Amax) (μmol·m-2·s-1) | 光呼吸速率
Photorespiration rate (Rp)
(μmol·m-2·s-1) | | CK | | 772.78±70.01a | 62.15±2.32a | 42.64±3.2a | 14.79±1.35a | | EC | | 717.73±12.78b | 65.41±3.44a | 35.45±4.00ab | 14.33±1.43a | | ET | | 821.97±10.71a | 68.47±4.28a | 36.49±2.31ab | 13.19±0.63a | | ECT | | 842.16±14.57a | 59.12±11.37a | 30.64±1.92b | 10.75±1.64a | | P-value | PT | 0.00 | 0.99 | 0.10 | 0.08 | | PCO2 | 0.13 | 0.64 | 0.05 | 0.30 | | PT×CO2 | 0.01 | 0.35 | 0.82 | 0.47 |
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