| 缺镁胁迫对纽荷尔脐橙叶绿素荧光特性的影响 |
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| 引用本文： | 凌丽俐,彭良志,王男麒,邢飞,江才伦,曹立,淳长品.缺镁胁迫对纽荷尔脐橙叶绿素荧光特性的影响[J].生态学报,2013,33(1):71-78. |
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| 作者姓名： | 凌丽俐 彭良志 王男麒 邢飞 江才伦 曹立 淳长品 |
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| 作者单位： | 1. 中国农业科学院柑桔研究所/国家柑桔工程技术研究中心,重庆,400712
2. 西南大学园林园艺学院,重庆,400712 |
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| 基金项目： | 重庆市科委自然科学基金项目(cstcjjA80022);现代农业(柑橘)产业技术体系建设专项;柑桔学重庆市市级重点实验室开放基金(CKLC200802);中央高校基本科研业务费专项资金(XDJK2011C006) |
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| 摘 要： | 以1年生枳砧纽荷尔脐橙为材料,测定不同叶龄叶片相对叶绿素含量和荧光参数,研究缺镁胁迫对叶片叶绿素合成与荧光特性的影响.结果显示,随着叶位的升高,低镁组和无镁组秋梢叶片(老叶)的相对叶绿素含量、Fυ/Fm呈明显增加趋势,而春梢叶片(新叶)的相对叶绿素含量、F,/Fm差异不显著；随着缺镁胁迫程度的增大,叶片相对叶绿素含量、Fυ／Fm、光响应能力(△Fυ/ Fm、qP和rETR)均呈降低趋势,而非光化学淬灭(qN)呈升高趋势,低镁组老叶、新叶及无镁组新叶与对照差异不显著(P＞0.05),而无镁组老叶与对照差异显著(P＜0.05).表明,缺镁胁迫严重时不仅会导致纽荷尔脐橙老叶光合能力降低,也会导致其新叶光合能力降低；短期缺镁胁迫对老叶光合能力的影响显著大于新叶,而且这种差异随着缺镁程度的增大而呈增大趋势.因此,在夏季高光照条件下缺镁纽荷尔脐橙老叶易发生光抑制,缺镁严重时甚至会产生光伤害,导致叶片早衰.
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| 关 键 词： | 缺镁胁迫 纽荷尔脐橙 叶绿素 荧光特性 |
| 收稿时间： | 2011/11/2 0:00:00 |
| 修稿时间： | 2012/6/14 0:00:00 |
Influence of magnesium deficiency on chlorophyll fluorescence characteristic in leaves of Newhall navel orange |
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| LING Lili,PENG Liangzhi,WANG Nanqi,XING Fei,JIANG Cailun,CAO Li and CHUN Changpin.Influence of magnesium deficiency on chlorophyll fluorescence characteristic in leaves of Newhall navel orange[J].Acta Ecologica Sinica,2013,33(1):71-78. |
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| Authors: | LING Lili PENG Liangzhi WANG Nanqi XING Fei JIANG Cailun CAO Li and CHUN Changpin |
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| Institution: | Citrus Research Institute, Chinese Academy of Agricultural Sciences, National Citrus Engineering Research Center, Chongqing 400712, China;Citrus Research Institute, Chinese Academy of Agricultural Sciences, National Citrus Engineering Research Center, Chongqing 400712, China;College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400712, China;College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400712, China;Citrus Research Institute, Chinese Academy of Agricultural Sciences, National Citrus Engineering Research Center, Chongqing 400712, China;Citrus Research Institute, Chinese Academy of Agricultural Sciences, National Citrus Engineering Research Center, Chongqing 400712, China;Citrus Research Institute, Chinese Academy of Agricultural Sciences, National Citrus Engineering Research Center, Chongqing 400712, China |
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| Abstract: | |
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| Keywords: | Mg deficiency Newhall navel orange chlorophyll fluorescent characteristic |
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