CAJ | 학술논문

利用水培试验研究了重金属铜（Cu）胁迫下鸢尾叶片的叶绿素荧光特性，为利用鸢尾处理重金属废水提供理论依据。结果表明，在30 mg/L Cu胁迫下，随着胁迫处理时间延长，鸢尾叶片最大光化学量子产量（Fv/Fm）、相对光合电子传递速率（ETR）先下降后上升，光化学淬灭系数（qP）则先上升后下降，非光化学淬灭系数（qN）一直处于下降趋势；在120 mg/L Cu胁迫下，随着胁迫处理时间延长，鸢尾叶片Fv/Fm、qP持续降低，qN先上升后下降，而 ETR则先下降后上升。可见，30 mg/L Cu对鸢尾叶片光系统Ⅱ反应中心的光化学电子传递有促进作用，而高质量浓度（120 mg/L）Cu会导致PSⅡ反应中心部分关闭。
이용수배시험연구료중금속동（Cu）협박하연미협편적협록소형광특성，위이용연미처리중금속폐수제공이론의거。결과표명，재30 mg/L Cu협박하，수착협박처리시간연장，연미협편최대광화학양자산량（Fv/Fm）、상대광합전자전체속솔（ETR）선하강후상승，광화학쉬멸계수（qP）칙선상승후하강，비광화학쉬멸계수（qN）일직처우하강추세；재120 mg/L Cu협박하，수착협박처리시간연장，연미협편Fv/Fm、qP지속강저，qN선상승후하강，이 ETR칙선하강후상승。가견，30 mg/L Cu대연미협편광계통Ⅱ반응중심적광화학전자전체유촉진작용，이고질량농도（120 mg/L）Cu회도치PSⅡ반응중심부분관폐。
In order to provide theoretical basis for treating waste water contained heavy metal using Iris tectorum Maxim.,the chlorophyll fluorescence parameters of Iris tectorum Maxim. under Cu stress condition were studied by hydroponics experiment.The results showed that under 30 mg/L Cu stress condition,with the increase of stress time,the efficiency of primary light energy conversion (Fv/Fm)and relative photosynthetic electron transport rate (ETR)of Iris tectorum Maxim.first decreased and then increased,photochemical quenching coefficient(qP)first increased and then decreased,and non-photochemical quenching coefficient (qN ) continuously decreased.Under 120 mg/L Cu stress condition,with the increase of stress time,Fv/Fm and qP continuously decreased,qN first increased and then decreased,and ETR first decreased and then increased.In conclusion,30 mg/L Cu could promote the photochemical electron delivery of PSⅡreaction center,and high concentration(120 mg/L)Cu would cause part of PSⅡ reaction center closed.