| 滴水观音叶绿素荧光参数对低温淹水处理的响应 |
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| 引用本文： | 夏红霞,胡定雷,朱启红,李明艳,李强,刘政.滴水观音叶绿素荧光参数对低温淹水处理的响应[J].水生态学杂志,2014,35(4):55-59. |
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| 作者姓名： | 夏红霞 胡定雷 朱启红 李明艳 李强 刘政 |
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| 作者单位： | 重庆文理学院 |
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| 基金项目： | 重庆市教育委员会项目（KJ121215）；重庆市教委项目（KJ131207）；重庆市自然科学基金计划项目(cstc2013jcyjA20024) |
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| 摘 要： | 以滴水观音为试验材料,研究了低温环境下淹水处理对其叶绿素荧光的影响。种植滴水观音的花盆置于水箱中,利用水位调节阀调节箱内水位。试验设计为不淹水(对照组,正常浇水)、1/4淹水、2/4淹水、3/4淹水和全淹,分别于淹水后的第10、20、30、40、50天进行各项指标的测定。试验结果显示:1/4淹水处理植株叶绿素荧光参数均高于对照处理,初始荧光产量、最大荧光产量、最大光能转化效率、光化学猝灭系数和非光化学猝灭系数分别为对照的106.6%、104.8%、107.8%、105.0%、153.6%,差异显著(P0.05);2/4淹水、3/4淹水、全淹组初始荧光产量、非光化学猝灭系数均高于对照组,最大荧光产量、最大光能转化效率和光化学猝灭系数均显著低于对照组,尤其全淹组分别低于对照组的20.4%、36.2%和17.2%。1/4淹水处理可提高滴水观音光合作用,高水位处理则抑制滴水观音生长。
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| 关 键 词： | 低温 淹水处理 滴水观音 叶绿素荧光 |
| 收稿时间： | 2014/2/16 0:00:00 |
| 修稿时间： | 2014/3/26 0:00:00 |
Response of Alocasia macrorrhiza Chlorophyll Fluorescence Parameters to Flooding Stress at Low Temperature |
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| XIA Hong-xi,HU Ding-lei,Zhu Qi-hong,LI Ming-yan,LI Qiang and LIU Zheng.Response of Alocasia macrorrhiza Chlorophyll Fluorescence Parameters to Flooding Stress at Low Temperature[J].Journal of Hydroecology,2014,35(4):55-59. |
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| Authors: | XIA Hong-xi HU Ding-lei Zhu Qi-hong LI Ming-yan LI Qiang and LIU Zheng |
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| Institution: | Chongqing University of Arts and Sciences |
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| Abstract: | In this study, we examined the effect of flooding stress on chlorophyll fluorescence of Alocasia macrorrhiza at low temperature. Chlorophyll fluorescence parameters of Alocasia macrorrhiza in five groups, i.e., the control group, 1/4 submerged group, 2/4 submerged group, 3/4 submerged group and full submerged group, were measured after 10, 20, 30, 40, 50 days of treatment, respectively. The results showed that chlorophyll fluorescence parameters of 1/4 submerged group were higher than those of the control group. The initial fluorescence yield (F0), maximum fluorescence yield (Fm), the maximum photochemical efficiency (Fv/Fm), photochemical quenching coefficient (qP) and non photochemical quenching coefficient (qN) were 106.6%, 104.8%, 107.8%, 105%, 153.6% of those in the control group, respectively, with significant differences (P < 0.05). The F0 and qN of 2/4, 3/4 and full submerged groups were higher than those of the control group, while Fm, Fv/Fm and qP were all significantly lower than those of the control group, especially for full submerged group, which decreased by 20.4%, 36.2% and 17.2% compared to the control group. It can be concluded that 1/4 submerged treatment will improve the photosynthesis of Alocasia macrorrhiza, but higher water level will restrain its growth. |
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| Keywords: | low temperature flooding stress Alocasia macrorrhiza chlorophyll fluorescence |
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