对-羟基苯甲酸对东北山樱桃叶绿素荧光参数的影响 |
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引用本文: | 高鹤. 对-羟基苯甲酸对东北山樱桃叶绿素荧光参数的影响[J]. 防护林科技, 2016, 0(7): 23-25. DOI: 10.13601/j.issn.1005-5215.2016.07.006 |
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作者姓名: | 高鹤 |
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作者单位: | 辽宁省林业技术推广站,辽宁 沈阳,110036 |
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摘 要: | 以东北山樱桃(Cerasus sachalinensis Kom.)实生幼苗为试材,利用Hansatch PEA,采用叶绿素荧光诱导动力学理论和JIP-test数据分析方法,研究了对-羟基苯甲酸对叶片叶绿素荧光参数的影响。结果表明:幼苗在不同浓度对-羟基苯甲酸(0.1A、1A、10A)处理下的叶片光合性能指数(PIABS)、捕获的激子将电子传递到电子传递链中QA-下游的其他电子受体的概率(Ψo)、用于电子传递的量子产额(φEo)和单位面积有活性的反应中心数目(RC/CSm)较对照均有所下降;PSⅡ最大量子效率(φPo)、单位面积有活性的反应中心数目(RC/CS0)几乎没有变化;而PSⅡ受体侧的电子受体库容量(Sm)则高于对照,且呈上升-下降趋势。天线色素吸收的能量(ABS/RC)在低浓度下有小幅升高,反应中心捕获的能量(TRo/RC)、用于电子传递的能量(ETo/RC)及用于热耗散的能量(DIo/RC)则无明显变化。可见,对-羟基苯甲酸对东北山樱桃叶片光合结构的不同部位产生影响,进而降低光合性能,影响光合作用。
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关 键 词: | 对-羟基苯甲酸 东北山樱桃 叶绿素荧光参数 |
Effects of Para-hydroxybenzoic Acid on Chlorophyll Fluorescence Parameter in Leaves of Cerasus sachalinensis |
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Abstract: | The effects of para-hydroxybenzoic on fast chlorophyll fluorescence transient and its parameters in Cera-sus sachalinensis seedlings were studied through plant efficiency analyzer from Hansatch PEA.Result shows that the performance index on a basis of absorption (PIABS )of seedlings under the treatment with different concentra-tions (0.1 A,1 A & 10 A),efficiency that trapped exciton can move an election into the election transport chain be-yond QA-(ψo),quantum yield for election transport (φEo),density of RC (RC/CSm )decreased.The maximum quantum efficiency of PSII (φPo),density of RC (RC/CS0 )hardly varied,whereas that normalized total complemen-tary area above the O-J-I-P transie (Sm )increased.In addition,absorption flux per CS (ABS/RC)increased, trapped energy flux per CS (TRo/RC),election transport flux per RC (ETo/RC)and dissipated energy flux per RC (DIo/RC)hardly varied.These results demonstrate that para-hydroxybenzoic acid affect different positions of pho-tosynthesis of Cerasus sachalinensis,decrease the performance of photosynthesis,influence the photosynthesis. |
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Keywords: | para-hydroxybenzoic Cerasus sachalinensis chlorophyll fluorescence parameter |
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