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| 水分胁迫对玉米叶绿素荧光特性的影响 | |
| 引用本文： | 齐华,白向历,孙世贤,刘明,杨国航,丛雪.水分胁迫对玉米叶绿素荧光特性的影响[J].华北农学报,2009,24(3). |
| 作者姓名： | 齐华 白向历 孙世贤 刘明 杨国航 丛雪 |
| 作者单位： | 1. 沈阳农业大学,辽宁沈阳,110161 2. 全国农业技术推广服务中心,北京,100026 3. 北京市农林科学院玉米研究中心,北京,100077 |
| 基金项目： | 国家科技支撑计划，北京农业育种基础研究创新平台项目 |
| 摘 要： | 以吉单261和京单28两个玉米品种为试验材料,研究水分胁迫对玉米叶片光合特性及叶绿素荧光参数的影响.结果表明:水分胁迫下玉米叶片的最大净光合速率、光补偿点、光饱和点和表观量子效率均显著下降;基础荧光显著增加,最大荧光、可变荧光和PSⅡ光化学效率显著降低;随着光强增加,水分胁迫条件下的光化学猝灭系数和实际光化学效率下降幅度明显加剧;非光化学猝灭系数和表观电子传递速率增加幅度则明显减缓.表明水分胁迫使玉米叶片光合性能减弱,PsⅡ反应中心开放部分的比例减少,光合电子传递能力下降,PSⅡ潜在活性受到抑制,过多的光能多是以非光化学猝灭等其他形式耗散掉,从而保护光合机构免受伤害. |
| 关 键 词： | 玉米 水分胁迫 光抑制 光合特性 叶绿素荧光参数 |
Effects of Water Stress on Chlorophyll Fluorescence Parameters of Maize |
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| QI Hua,BAI Xiang-li,SUN Shi-xian,LIU Ming,YANG Guo-hang,CONG Xue.Effects of Water Stress on Chlorophyll Fluorescence Parameters of Maize[J].Acta Agriculturae Boreali-Sinica,2009,24(3). | |
| Authors: | QI Hua BAI Xiang-li SUN Shi-xian LIU Ming YANG Guo-hang CONG Xue |
| Institution: | 1.College of Agronomy;Shenyang Agricultural University;Shenyang 110161;China;2.National Agricultural Technology Extension and Service Center;Beijing 100026;3.Maize Research Centre;Beijing Academy of Agriculture and Forestry Sciences;Beijing 100097;China |
| Abstract: | Use maize Jidan 261 and Jingdan 28 as materials.Research the effects of water stress on chlorophyll fluorescence parameters of maize leaf.The result showed that the light-saturated net photosynthetic rate,light compensation point and light saturation point and values of intrinsic quantum efficiency for CO2 uptake were decreased on water stress.The basis fluorescence of the maize leaves was significantly increased.The max fluorescence,the variable fluorescence and photochemical efficiency were significantly ... |
| Keywords: | Maize Water stress Light restrain Photosynthetic characteristics Chlorophyll fluorescence parameters |
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