| 低温胁迫对咖啡2种嫁接方式叶绿素荧光参数的影响 |
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| 引用本文： | 李金芹,韩永庄,董云萍,闫林,龙宇宙,王晓阳,孙燕,林兴军,黄丽芳.低温胁迫对咖啡2种嫁接方式叶绿素荧光参数的影响[J].中国热带农业,2021(1):63-68. |
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| 作者姓名： | 李金芹 韩永庄 董云萍 闫林 龙宇宙 王晓阳 孙燕 林兴军 黄丽芳 |
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| 作者单位： | 中国热带农业科学院香料饮料研究所/农业农村部香辛饮料作物遗传资源利用重点实验室/海南省热带香辛饮料作物遗传改良与品质调控重点实验室;云南农业大学热带作物学院 |
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| 基金项目： | 海南省自然科学基金项目(319QN318);物种保护项目(18200037);咖啡、胡椒种质资源精准鉴定与新品种培育 |
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| 摘 要： | 为研究低温胁迫对咖啡2种嫁接方式叶绿素荧光参数的影响,以兴1为接穗,中粒种(ZN)和大粒种(ZJ)为砧木进行嫁接,在人工气候箱内模拟低温条件,对咖啡苗嫁接的叶绿素荧光参数相关指标进行测定。结果表明:随着处理温度的降低和时间的延长,ZN和ZJ 2种嫁接苗的光化学淬灭系数(qP)、非光化学淬灭系数(qN)、PSⅡ实际光化学效率(ΦPSⅡ)和光合电子传递速率(ETR)等叶绿素荧光参数均呈不同幅度的下降趋势,而初始荧光(Fo)呈上升趋势。结合叶绿素荧光各单项指标抗寒系数分析,8℃处理,ZN嫁接苗抗寒系数的平均值较高,为59.30%,ZJ为56.42%。当温度降至0℃时,2种处理的抗寒系数相近。
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| 关 键 词： | 咖啡 低温胁迫 嫁接 叶绿素荧光参数 |
Effects of Low Temperature Stress on Chlorophyll Fluorescence Parameters of Two Grafting Methods of Coffee |
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| LI Jinqin,HAN Yongzhuang,DONG Yunping,YAN Lin,LONG Yuzhou,WANG Xiaoyang,SUN Yan,LIN Xingjun,HUANG Lifang.Effects of Low Temperature Stress on Chlorophyll Fluorescence Parameters of Two Grafting Methods of Coffee[J].China Tropical Agriculture,2021(1):63-68. |
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| Authors: | LI Jinqin HAN Yongzhuang DONG Yunping YAN Lin LONG Yuzhou WANG Xiaoyang SUN Yan LIN Xingjun HUANG Lifang |
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| Institution: | (Spice and Beverage Research Institute,Chinese Academy of Tropical Agricultural Science/Key Laboratory of Genetic Resources Utilization of Spice and Beverage Crops,Ministry of Agriculture and Rural Affairs/Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops,Wanning 571533,Hainan;College of Tropical Crops,Yunnan Agricultural University,Puer 665099,Yunnan) |
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| Abstract: | In order to study the effects of low temperature stress on chlorophyll fluorescence parameters of two grafting methods of coffee,the coffee was grafted in climate chamber which can stimulate low temperature.Xing-1 was used as scion,while C.canephora(ZN)and C.liberica(ZJ)were used as rootstocks.After measuring the chlorophyll fluorescence parameters of grafted coffee seedlings,the results showed that the chlorophyll fluorescence parameters decreased to different degrees,such as photochemical quenching coefficient(qP),non-photochemical quenching coefficient(qN),PSⅡactual photochemical efficiency(ΦPSⅡ)and photosynthetic electron transfer rate(ETR)of ZN and ZJ grafted seedlings,while the initial fluorescence(Fo)increased.Combining with the analysis of cold resistance coefficient of chlorophyll fluorescence single index,the average cold resistance coefficient of ZN grafted seedlings and ZJ treatment was 59.30%and 56.42%respectively at 8℃.When the temperature dropped to 0℃,the cold resistance coefficient of the two treatments was close. |
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| Keywords: | coffee low temperature stress grafting chlorophyll fluorescence parameters |
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