大环内酯类和高表达玉米C4-PEPC基因对水稻耐旱性的影响
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宋凝曦, 李霞, 王净, 吴博晗, 曹悦, 杨杰, 谢寅峰
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Effects on drought tolerance by pladienolide B and rice with high expression of C4-PEPC
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SONG Ni-Xi, LI Xia, WANG Jin, WU Bo-Han, CAO Yue, YANG Jie, XIE Yin-Feng
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表3 喷施PB联合10% PEG-6000模拟干旱处理对水稻叶片光合参数的变化
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Table 3 Changes of photosynthetic parameters in rice leaves when spraying PB combined with 10% PEG-6000 treatment
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光合参数
Photosynthetic parameters | 转玉米C4-PEPC水稻 C4-PEPC rice (PC) | Kitaake (WT) | | CK | PEG | PEG+PB | CK | PEG | PEG+PB | 净光合速率
Net photosynthetic rate Pn (μmoL CO2 m-2 s-1) | 20.14 a 100.00% | 16.73 c 83.07% | 15.60 d 77.46% | 18.22 b 100.00% | 13.46 c 73.87% | 10.68 f
58.62% | 气孔导度
Stomatal conductance Gs (mol m-2 s-1) | 0.73 a 100.00% | 0.45 b 61.64% | 0.46 b 63.01% | 0.75 a 100.00% | 0.33 c 44.00% | 0.31 c
41.33% | 胞间CO2浓度
Intercellular CO2 concentration Ci (μmol mol-1) | 366.57 a 100.00% | 345.18 ab 94.16% | 337.18 b
91.98% | 368.96 a 100.00% | 343.04 b 92.97% | 354.09 ab
95.97% | 蒸腾速率
Transpiration rate Tr (mol H2O m-2 s-1) | 9.06 a 100.00% | 6.31 c 69.65% | 6.24 c 68.87% | 9.46 a 100.00% | 7.14 b 75.48% | 7.34 b
77.59% | 羧化效率
Carboxylation efficiency CE (mol m-2 s-1) | 0.063 a 100.00% | 0.048 c 76.19% | 0.046 c 73.02% | 0.051 b 100.00% | 0.039 d 76.47% | 0.032 e
62.75% |
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