| 干旱胁迫和复水对一品红生理特性的影响 |
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| 引用本文： | 黄子锋,王凤兰,黄宇航.干旱胁迫和复水对一品红生理特性的影响[J].广东农业科学,2014,41(5):100-104. |
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| 作者姓名： | 黄子锋 王凤兰 黄宇航 |
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| 作者单位： | 1.东莞市粮作花卉研究所，广东东莞523063；
2.仲恺农业工程学院园艺园林学院，广东广州510225 |
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| 基金项目： | 广东省科技计划项目（2010B20410003） |
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| 摘 要： | 以一品红盆花为试验材料，在干旱胁迫条件下，通过测定干旱胁迫及复水条件下两个品种叶片的相对
含水量(RWC)、水分饱和亏(WSD)、相对电导率、叶绿素荧光参数、丙二醛（MDA）、过氧化氢（H2O2）等相关生理生化指
标变化情况，研究了干旱胁迫和复水对一品红两个品种生理生化指标的影响。结果表明，干旱胁迫引起两个品种的
RWC、Fv/Fm 明显下降和相对电导率、MDA、H2O2 、Fo、WSD 含量明显上升；复水后，两个品种的RWC、WSD、Fv/Fm、
MDA、H2O2、Fo 等不同程度地恢复，抗旱野金奖冶品种的RWC、WSD、Fo、H2O2恢复到接近胁迫前水平，而原野金奖冶品种
的全部生理指标均未能恢复到胁迫前水平。抗旱野金奖冶品种的各项指标与原野金奖冶品种对照相比，在干旱胁迫期间
降幅小，复水后各项指标恢复相对明显，表现出较强的耐旱适应能力。
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| 关 键 词： | 一品红 干旱胁迫 复水 生理指标 |
Effect of drought stress and rewatering on physiological
characteristics of Euphorbia pulcherrima Willd |
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| Abstract: | Useing two varieties of poinsettia pot flower (Euphorbia pulcherrima Willd) as test materials, under the
condition of drought stress and rewatering, the physiological characteristics of poinsettia, relative water content (RWC),
relative conductivity, the chlorophyll fluorescence parameters and malondialdehyde (MDA) and hydrogen peroxide (H2O2)
were measured, and the influence of drought stress was studied. The results showed that the drought stress caused the
RWC, Fv/Fm to decrease obviously, and the relative conductivity, MDA, H2O2, Fo content increased obviously; After
rewatering, RWC, Fv/Fm, MDA, H2O2, Fo recovered in different degrees. The indexes of poinsettia No.1 declined gently
than No.2 during drought stress, and the drought resisting ability of each index was relatively obvious than variety No.2. |
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| Keywords: | Euphorbia pulcherrima Willd drought stress rehydration physiological indexes |
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