甜菜幼苗光合生理对干旱胁迫的响应

尹希龙, 石杨, 李王胜, 兴旺

Photosynthetic Physiological Response to Drought Stress in Sugar Beet at Seedling Stage

Yin Xilong, Shi Yang, Li Wangsheng, Xing Wang

表2 甜菜幼苗叶片表观光合指标

Table 2 Apparent photosynthetic index of sugar beet seedling leaves

时间Time (d) 处理Treatment 品种Variety Pn [μmol/(m2·s)] Tr [mmol/(m2·s)] Gs [mmol/(m2·s)] Ci (μmol/mol) 2 CK V1 20.51±0.22a 1.24±0.07a 70.94±4.14bc 862.77±30.84a V2 17.90±0.24b 1.35±0.23a 94.21±23.87ab 636.90±16.52b DS V1 18.58±0.13c 1.49±0.09a 111.60±8.34a 440.97±1.13c V2 11.68±0.18d 0.75±0.01b 38.80±1.22c 317.57±15.77d 5 CK V1 25.14±0.02a 1.72±0.16a 148.92±33.20a 900.27±23.73a V2 24.28±1.18a 1.81±0.19a 170.69±20.55a 864.90±47.15a DS V1 17.13±0.04b 0.69±0.03b 36.49±2.57b 406.00±43.93b V2 6.18±0.19c 0.36±0.02c 17.99±1.12b 259.97±12.42c 7 CK V1 31.51±0.08a 2.56±0.02a 454.71±13.95a 1336.70±66.56a V2 30.03±0.08b 1.91±0.15b 223.28±43.64b 1121.30±96.12b DS V1 15.43±0.10c 0.57±0.01c 35.67±0.55c 380.13±16.82c V2 1.04±0.08d 0.20±0.01d 8.99±0.38c 173.90±7.45d