| 干旱胁迫对玉米光合和产量的影响 |
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| 引用本文： | 刘灵,何若天.干旱胁迫对玉米光合和产量的影响[J].广西农业生物科学,1995(4). |
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| 作者姓名： | 刘灵 何若天 |
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| 作者单位： | 广西农业大学实验中心，广西师范大学生物系 |
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| 摘 要： | 干旱或渗透胁迫下，３个测试的玉米杂交种幼苗叶片叶绿素含量均下降，其净光合速率、呼吸速率亦显著下降，下降幅度为：玉单３５８＜桂三２号＜南校８号。叶片Ｃａ２＋－ＡＴＰ酶和Ｍｇ２＋－ＡＴＰ酶活性显著增加，增加幅度为；玉单３５８＜桂三２号＜南校８号。田间试验结果表明：干旱处理后，各品种株高、穗长、穗粗和籽粒百粒重均有不同程度的下降，下降幅度均为：玉单３５８＜桂三２号＜南校８号。干旱胁迫显著降低了玉米产量。减产程度为：玉单３５８＜桂三２号＜南校８号。说明花粉植株杂交种玉单３５８的抗旱能力大于桂三２号和南校８号。
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| 关 键 词： | 干旱胁迫，净光合速率，呼吸速率，产量，玉米杂交种 |
Effect of Drought Stress on Photosynthesis and Grain Yields of Maize |
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| Lin Lin, He Ruotian.Effect of Drought Stress on Photosynthesis and Grain Yields of Maize[J].Journal of Guangxi Agricultural and Biological Science,1995(4). |
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| Authors: | Lin Lin He Ruotian |
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| Abstract: | Some physiological and agricultural characters of three maize (Zea mays L.)cultivars,i.e.cv.Yu Dan 358,Gui Shan No.2and Nan Xiao No.8 which treated with natural or inductive drought stress by polyethylene glycol(PEG)were studied comparatively.The main results were as follows:The content of chlorophyll, net photosynthetic rate(NPR) and respiratory rate in leaves of three maize cultivars were considerably lowered during be treated by drought stress.The decreasing rate of above three indexes was by Yu Dan 358
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| Keywords: | drought stress net photosynthetic rate respiratory rate grain yields hybrid species of maize |
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