大气CO2倍增条件下冬小麦气体交换对高温干旱及复水过程的响应

郭丽丽,张茜茜,郝立华,乔雅君,陈文娜,卢云泽,李菲,曹旭,王清涛,郑云普

Responses of leaf gas exchange to high temperature and drought combination as well as re-watering of winter wheat under doubling atmospheric CO2 concentration

Li-Li GUO,Xi-Xi ZHANG,Li-Hua HAO,Ya-Jun QIAO,Wen-Na CHEN,Yun-Ze LU,Fei LI,Xu CAO,Qing-Tao WANG,Yun-Pu ZHENG

表1 CO2浓度倍增下高温干旱对冬小麦叶片气孔参数的影响

Table 1 Effects of the combined stress of high temperature and drought on stomatal parameters of winter wheat under doubling CO2 concentration

气孔参数 Stomatal parameter 叶面 Leaf surface 对照 Control CO2倍增 E 高温×干旱 HD CO2×高温×干旱 EHD P值 P-value 气孔密度 Stomatal density (No. mm-2) 近轴面Adaxial 53.7±1.5 c 53.5±4.6 c 74.1±5.5 a 64.6±8.2 b 0.001 远轴面Abaxial 33.1±1.1 b 41.7±1.2 a 44.1±8.5 a 48.1±2.9 a 0.008 气孔长度 Stomatal length (μm) 近轴面Adaxial 37.3±3.2 a 38.1±1.8 a 31.7±3.3 b 36.1±2.0 a 0.007 远轴面Abaxial 34.1±2.7 ab 31.9±2.8 b 31.9±3.9 b 36.0±2.4 a 0.003 气孔宽度 Stomatal width (μm) 近轴面Adaxial 3.5±0.6 a 3.1±0.4 b 3.1±0.5 b 2.6±0.3 c 0.000 远轴面Abaxial 2.8±0.3 ab 3.1±0.4 a 2.6±0.4 b 2.6±0.4 b 0.041 气孔周长 Stomatal perimeter (μm) 近轴面Adaxial 77.5±7.2 a 79.6±3.7 a 67.3±6.2 b 76.2±7.4 a 0.007 远轴面Abaxial 71.6±6.0 ab 66.5±6.2 bc 65.8±7.6 c 76.2±4.8 a 0.005 气孔面积 Stomatal area (μm2) 近轴面Adaxial 119.4±18.7 a 109.7±11.7 a 87.3±11.0 b 94.3±11.8 b 0.000 远轴面Abaxial 87.0±12.8 ab 92.2±14.9 a 79.7±16.2 b 95.8±14.8 a 0.067 气孔形状指数 Stomatal shape index (%) 近轴面Adaxial 14.0±1 a 13.1±1 b 13.9±1 a 13.0±1 b 0.002 远轴面Abaxial 13.0±1 bc 14.5±1 a 13.5±1 b 12.8±1 c 0.001