| 沿海沙地5种相思树叶绿素荧光参数夏季日变化 |
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| 引用本文： | 林宇,周锦业,何宗明,林思祖,丁国昌. 沿海沙地5种相思树叶绿素荧光参数夏季日变化[J]. 福建农业大学学报(自然科学版), 2014, 0(1): 29-33 |
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| 作者姓名： | 林宇 周锦业 何宗明 林思祖 丁国昌 |
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| 作者单位： | [1]福建农林大学林学院,福建福州350002 [2]福建省长乐大鹤国有防护林场,福建长乐350212 [3]福建农林大学园林学院,福建福州350002 |
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| 基金项目： | 福建省林业科研项目（闽林科[2012]3号）. |
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| 摘 要： | 以直杆大叶、厚荚、卷荚、肯氏和纹荚5个品种相思树为材料，研究叶绿素荧光参数在夏季的日变化规律．结果表明，5种相思树在12：00-16：00表现出不同程度的光抑制，光系统Ⅱ（PsⅡ）最大光能转换效率（Fv/Fm）和PsⅡ潜在活性（Fv／FO）分别为0．730-0．854和2．711—5．592。在温度最高的14：00，5种相思树Fv／Fm 和Fv／Fo的大小均为：直杆大叶〉肯氏〉厚荚〉纹荚〉卷荚，16：00的大小均为：肯氏〉直杆大叶〉厚荚〉纹荚〉卷荚．卷荚的最小初始荧光（Fo）明显大于其他树种，而Fv／Fm和Fv／Fo均显著小于其他树种，表明其开放的PsⅡ反应中心的光量捕捉效率低于其他树种．
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| 关 键 词： | 相思树 叶绿素荧光参数 日变化 沿海沙地 |
Diurnal changes of chlorophyll fluorescence parameters in 5 Acacia species on coastal sand in summer |
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| LIN Yu,ZHOU Jin-ye,HE Zong-ming,LIN Si-zu,DING Guo-chang. Diurnal changes of chlorophyll fluorescence parameters in 5 Acacia species on coastal sand in summer[J]. Journal of Fujian Agricultural University, 2014, 0(1): 29-33 |
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| Authors: | LIN Yu ZHOU Jin-ye HE Zong-ming LIN Si-zu DING Guo-chang |
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| Affiliation: | 1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, Chlna; 2. Changle Dahe State-owned Protection Forest Farm of Fujian Province, Changle, Fujian 350212, China; 3. CoUege of Landscape, Fujian Asrlculture and Forestry University, Fuzhou, Fujian 350002, China) |
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| Abstract: | Diurnal changes of chlorophyll fluorescence parameters in 5 different Acacia plantations in summer were studied. Rosults showed that degrees of fight inhibition in different Acacia species were different from 12：00 to 16：00. The maximum energy conver- sion efficiency of photosystemⅡ（PSⅡ） （Fv/Fm） and potential activity （Fv/Fo） were 0.730 -0.854 and 2.711 -5.592 respec- tively. The change of Fv/Fm and Fv/Fo of different Acacia species showed the similar trend, that was at 14：00, A. auriculi 〉 A. cun- ninghami 〉 A. crassicarpa 〉 A. auiacacarpa 〉 A. cincinnata i while at 16 ： 00, A. cunninghami 〉 A. auriculi〉 A. crassicarpa 〉 A. aulo- cocarpa 〉 A. cincinnata. The minimal fluorescence （ Fo ） of A. cincinnata was obviously higher than that of other Acacia species, but Fv/Fm and Fv/Fo were significantly lower than those of the other four Acacia species, and its energy capture e/Hciency of opening PS 11 reaction center was lower than that in other Acacia species. |
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| Keywords: | Acacia chlorophyll fluorescence parameters diurnal changes coastal sandy |
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