| 遮荫对茄子幼苗叶片叶绿素荧光特性的影响 |
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| 引用本文： | 吴雪霞,龚静,查丁石.遮荫对茄子幼苗叶片叶绿素荧光特性的影响[J].吉林蔬菜,2010(4):35-38. |
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| 作者姓名： | 吴雪霞 龚静 查丁石 |
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| 作者单位： | 上海市农业科学院园艺研究所,上海市设施园艺技术重点实验室,201106 |
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| 基金项目： | 上海市科技兴农重点公关项目 |
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| 摘 要： | 研究了不同遮荫处理对茄子幼苗叶绿素荧光参数的影响。结果表明,与全光照条件下相比,遮荫处理使非光化学猝灭系数(NPQ)和光系统激发能压力(1-qP)降低;最大荧光(Fm)、PSII最大光化学效率(Fv/Fm)、PSII潜在活性(Fv/Fo)、PSII实际光化学效率(ФPSII)、天线转化效率(Fv’/Fm’)、光化学荧光猝灭系数(qP)和电子传递速率(ETR)增加。光化学反应的能量(P)在叶片所吸收的光能中所占的比例也逐渐增加,天线色素耗散的能量(D)表现出和P相反的趋势,非光化学反应耗散的能量(E)变化不稳定。以上结果表明,茄子对弱光胁迫有一定的自我调节能力和适应能力,一层遮阳网处理下,茄子幼苗光系统II光化学效率最高,可在育苗生产中应用。
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| 关 键 词： | 茄子幼苗 遮荫 叶绿素荧光特性 |
Effects of Shading on Chlorophyll Fluorescence Characteristics in Leaves of Eggplant Seedlings |
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| Authors: | WU Xue-xia GONG Jing ZHA Ding-shi |
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| Institution: | (Horticultural Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai Key Laboratory of Protected Horticultural Technology,Shanghai 201106) |
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| Abstract: | The]chlorophyll fluorescence parameters under different shading treatments were investigated of eggplant seedlings.The results showed that relative to those under full light,non-photochemical quenching coetScient （NPQ）,high excitation pressure （1-qP）were decreased;maximum fluorescenc （Fm）,photochemical maximum efficiency of PSII （Fv/Fm）,potential photochemical efficiency（Fv/Fo）,actual photochemical efficiency of PSI （ФPSII）,efficiency of excitation captured by open PSII centers （Fv＇/Fm＇）,photochemical quenching coefficient（qP） and the electron transport rate （ETR）in shading environment were increased.The fraction of absorbed light in photochemistry （ P ）were increased,the fraction of antenna heat dissipation （ D ）were decreased,while excess energy （ E ）changed unstable.These results showed that eggplant has self-adjusting and adaptation ability to low light stress,and photochemical efficiency of PSII was.highest under one tier shading treatment and suitable for the growth. |
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| Keywords: | Eggplantseedlings Shading Chlorophyll fluorescence characteristics |
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