| 锦橙叶片镁质量分数与若干光合指标的相关性 |
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| 引用本文： | 凌丽俐,彭良志,曹立,淳长品,江才伦,王振兴,张广越.锦橙叶片镁质量分数与若干光合指标的相关性[J].果树学报,2009,26(2). |
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| 作者姓名： | 凌丽俐 彭良志 曹立 淳长品 江才伦 王振兴 张广越 |
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| 作者单位： | 凌丽俐,彭良志,曹立,淳长品,江才伦,LING Li-li,PENG Liang-zhi,CAO Li,CHUN Chang-pin,JIANG Cai-lun(西南大学柑桔研究所,国家柑桔工程技术研究中心,重庆,400712);王振兴,张广越,WANG Zhen-xing,ZHANG Guang-yue(西南大学园艺园林学院,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，国家公益性行业(农业)科研专项基金 |
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| 摘 要： | 选用缺镁程度不同的北碚447锦橙,采用缺镁黄化分级方法,测定不同级别叶片的镁质量分数、叶绿素各成分质量分数和净光合速率,探讨叶片镁质量分数与后2者的相关性。结果表明,不同缺镁级别叶片的镁质量分数存在极显著差异;叶片的叶绿素a(Chla)、叶绿素b(Chlb)、叶绿素(Chl)和类胡萝卜素(Car)与镁质量分数呈显著的线性正相关关系,而与Car/Chl呈显著的指数负相关关系;叶片镁质量分数与净光合速率(Pn)也呈极显著的正相关关系,二项式回归方程为:y=0.0135x2+0.0484x+0.056(n=100,R2=0.9255)。因此,可以采用缺镁黄化分级法对柑橘叶片缺镁程度作定性分析,并通过测定叶片的Chla质量分数、Chlb质量分数、Chl质量分数、Car质量分数、Car/Chl或Pn值,建立与镁质量分数相关的数学模型,定量换算得到叶片的镁质量分数。
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| 关 键 词： | 锦橙 缺镁 光合指标 相关性 |
Study on the relationship between magnesium content and photosynthetic indicators of magnesium deficient leaves of Beibei 447 Jinchen orange(Citrus sinensis) |
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| LING Li -li,PENG Liang -zhi,CAO Li,CHUN Chang -pin,JIANG Cai -lun,WANG Zhen -xing,ZHANG Guang-yue.Study on the relationship between magnesium content and photosynthetic indicators of magnesium deficient leaves of Beibei 447 Jinchen orange(Citrus sinensis)[J].Journal of Fruit Science,2009,26(2). |
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| Authors: | LING Li -li PENG Liang -zhi CAO Li CHUN Chang -pin JIANG Cai -lun WANG Zhen -xing ZHANG Guang-yue |
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| Institution: | 1Citrus Research Institute;Southwest University;National Citrus Engineering Research Center;Chongqing 400712 China;2College of Hor-ticulture and Landscape;Chongqing 400712 China |
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| Abstract: | For studying the correlation between the magnesium(Mg) content in leaves and the indices including chlorophyll content and net photosynthetic rate(Pn) in leaves of Beibei 447 Jinchen orange(Citrus sinensis Osbeck),the leaf was grad-ed by leaf yellowing degree,and then to measure Mg content,chlorophyll content and net photosynthetic rate in leaves of dif-ferent Mg deficient levels.Results showed that remarkable differences of Mg content existed in different yellowing-graded leaves.There was a significant and... |
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| Keywords: | Orange(Citrus sinensis Osbeck) Mg deficiency Photosynthetic indicator Correlation |
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