| 缺镁对北碚447锦橙光合作用特性的影响 |
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| 引用本文： | 凌丽俐,彭良志,曹立,江才伦,淳长品,张广越,王振兴.缺镁对北碚447锦橙光合作用特性的影响[J].果树学报,2009,26(3). |
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| 作者姓名： | 凌丽俐 彭良志 曹立 江才伦 淳长品 张广越 王振兴 |
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| 作者单位： | 凌丽俐,彭良志,曹立,江才伦,淳长品,LING Li-li,PENG Liang-zhi,CAO Li,JIANG Cai-lun,CHUN Chang-pin(西南大学柑桔研究所,重庆,400712;西南大学国家柑桔工程技术研究中心,重庆,400712);张广越,王振兴,ZHANG Guang-yue,WANG Zhen-xing(西南大学,重庆,400712)
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| 基金项目： | 国家科技支撑项目，重庆市科委重大专项基金，公益性行业(农业)科研专项基金，柑桔学重庆市市级重点实验室开放基金，现代农业(柑橘)产业技术体系建设专项基金 |
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| 摘 要： | 以北碚447锦橙为材料,测定叶片镁质量分数、光合色素质量分数、光响应和CO2响应有关指标,研究在自然条件下缺镁对锦橙叶片光合特性的影响。结果显示,随着黄化程度增加叶片的镁质量分数显著降低,叶片受镁胁迫程度加剧。随着缺镁程度增加,叶片光合色素呈极显著的下降趋势,叶片的光饱和点、Pnmax、表观量子效率(AQY)、CO2饱和点和羧化效率(CE)显著降低,叶片的光补偿点和CO2补偿点显著提高;在光响应和CO2响应上,随着缺镁程度增加,锦橙叶片气孔导度显著降低,而细胞间隙CO2显著增大,表明缺镁锦橙的光合作用主要是受非气孔限制。这些结果为柑橘优质、高产栽培提供了理论指导和相关依据。
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| 关 键 词： | 锦橙 缺镁 光合特性 |
Effect of magnesium deficiency on photosynthesis characteristic of Beibei 447 Jinchen orange |
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| LING Li-li,PENG Liang-zhi,CAO Li,JIANG Cai-lun,CHUN Chang-pin,ZHANG Guang-yue,WANG Zhen-xing.Effect of magnesium deficiency on photosynthesis characteristic of Beibei 447 Jinchen orange[J].Journal of Fruit Science,2009,26(3). |
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| Authors: | LING Li-li PENG Liang-zhi CAO Li JIANG Cai-lun CHUN Chang-pin ZHANG Guang-yue WANG Zhen-xing |
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| Institution: | 1Citrus Research Institute;CAAS;Chongqing 400712 China;2National Engineering Research Center for Citrus;3Southwest University;Chongqing 400712 China |
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| Abstract: | In order to elucidate the photosynthesis characteristics of Beibei 447 Jinchen orange(Citrus sinensis Osbeck) under magnesium(Mg) deficiency stress,we measured Mg content,chlorophyll content,light response and CO2 response of the leaves with different Mg deficient levels.The results revealed that the magnesium content of the leaves showed a significant downward trend with the increment of leaf yellowing degree;those having deep yellowing leaves were stressed heavily by Mg deficiency.Photosynthetic pigment,t... |
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| Keywords: | Jingcheng orange Citrus sinensis Osbeck Magnesium deficiency Photosynthetic characteristic |
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