| 梨杂种苗童区和成年区叶片光合荧光特征及超微结构研究 |
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| 引用本文： | 蔺经,杨青松,王中华,李晓刚,常有宏.梨杂种苗童区和成年区叶片光合荧光特征及超微结构研究[J].果树学报,2011(5):750-754. |
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| 作者姓名： | 蔺经 杨青松 王中华 李晓刚 常有宏 |
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| 作者单位： | 江苏省农业科学院园艺研究所; |
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| 基金项目： | 江苏省省自主创新项目(CX(10)108) |
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| 摘 要： | 为进一步揭示梨实生树童区和成年区的生理差异,以7 a生华酥×西子绿梨杂种单株为试材,比较分析了童区和成年区叶片光合荧光特性及超微结构差异。结果表明,童年区和成年区叶片光合荧光各参数随光强增加的变化趋势基本一致,但是在同一光强下,成年区叶片净光合速率（Pn）、气孔导度（Gs）、蒸腾速率（Tr）、胞间CO2浓度（Ci）以及...
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| 关 键 词： | 梨 杂种苗 童区 成年区 光合作用 叶绿素荧光 超微结构 |
Photosynthetic fluorescence characteristics and ultrastructure of juvenile zone and adult zone in pear hybrid seedlings |
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| LIN Jing,YANG Qing-song,WANG Zhong-hua,LI Xiao-gang,CHANG You-hong.Photosynthetic fluorescence characteristics and ultrastructure of juvenile zone and adult zone in pear hybrid seedlings[J].Journal of Fruit Science,2011(5):750-754. |
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| Authors: | LIN Jing YANG Qing-song WANG Zhong-hua LI Xiao-gang CHANG You-hong |
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| Institution: | LIN Jing,YANG Qing-song,WANG Zhong-hua,LI Xiao-gang,CHANG You-hong(Institute of Horticulture,Jiangsu Academy of Agricultural Sciences,Nanjing,Jiangsu 210014 China) |
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| Abstract: | 7-year-old pear hybrid seedlings of Huasu × Xizilv were used to investigate the photosynthetic fluorescence characteristics and ultrastructure characteristics of juvenile zone and adult zone.Results indicated that under different light intensities,the photosynthetic fluorescence characteristic variation trends of leaves are similar in juvenile zone and adult zone.But the leaves in adult zone have much higher net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration Rate of winter wheat(Tr),intercellular CO2 concentration(Ci),light saturation point(Im),apparent quantum yield(AQY),photochemical quenching(qP),quantum yield of PSII photochemistry(ФPSⅡ),non-pho-tochemical quenching(NPQ) and electron transport rate(ETR)compared to juvenile zone,which maybe correlated with the different chlorophyll content and ultrastructure characteristics. |
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| Keywords: | Pear Hybrid seedlings Juvenile zone Adult zone Photosynthetic Fluorescence characteristics Ultrastructure |
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