| 梨属4个重要种的光合特性及水分利用率 |
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| 引用本文： | 樊卫国,李迎春.梨属4个重要种的光合特性及水分利用率[J].西南农业学报,2006,19(6):1144-1146. |
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| 作者姓名： | 樊卫国 李迎春 |
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| 作者单位： | 1. 贵州大学喀斯特山地果树资源研究所,贵州,贵阳,550025
2. 中国林业科学研究院亚林所,浙江,富阳,311400 |
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| 基金项目： | 贵州省教育厅自然科学基金资助项目(项目编号:95099D-37) |
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| 摘 要： | 以川梨(Pyrus pashiaBuch.Ham.)、滇梨(Pyrus pseudopashiaYu)、杜梨(Pyrus betulaefoliaBge.)和砂梨(Pyrus pyrifoliaNa-kai)为材料,研究了梨属4个种的光合速率、光饱和点、光补偿点、光合速率和蒸腾速率的日变化规律、水分利用率(WUE)及日变化规律。结果表明,梨属4个种的光合速率、光饱和点和光补偿点存在差异,光合速率强弱顺序为川梨>滇梨>杜梨>砂梨。杜梨的光饱和点和光补偿点最高。供试的梨属4个种在晴天光合速率的日变化均呈双峰曲线,中午有明显的“午休”现象;蒸腾速率日变化呈单峰曲线。水分利用效率强弱的顺序为杜梨>滇梨>川梨>砂梨。
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| 关 键 词： | 梨属植物 砧木 光合特性 水分利用率 |
| 文章编号： | 1001-4829（2006）06-1144-03 |
| 收稿时间： | 2006-10-09 |
| 修稿时间： | 2006-10-09 |
Photosynthetic characters and water utilization of four species of Pyrus |
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| FAN Wei-guo,LI Ying-chun.Photosynthetic characters and water utilization of four species of Pyrus[J].Southwest China Journal of Agricultural Sciences,2006,19(6):1144-1146. |
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| Authors: | FAN Wei-guo LI Ying-chun |
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| Institution: | 1. Reseach Institute for Fruit Resources of Karst Mountain Region, Guizhou University, Guizhou Guiyang 550025, China ;2. Research Institute of Subtropical Forestry, CAF, Zhejiang Fuyang 311400, China |
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| Abstract: | The Photosynthetic rate(Pn),the light compensation points(LCP),the light saturation points(LSP),the transpiration(Tr),the water utilization efficiency(WUE)and the diurnal changes of Pn,Tr,WUE were study on Pyrus pashia Buch.Ham.,Pyrus pseudopashia Yu,Pyrus betulaefolia Bge.,Pyrus pyrifolia Nakai.The results showed that there are different of Pn,LCP,LSP of four pear,its order of Pn from high to low is as follows:P.pashia Buch.Ham.>P.eudopashia Yu>P.betulaefolia Bge.>P.pyrifolia Nakai.In four pear,the LCP and the LSP of P.betulaefolia Bge.is higher than that of other three pears.Diurnal changes of Pn,WUE showed similar patterns of double peak curve and obvious "midday-rest"in four pear on clear days.Diurnal changes of Tr appeared single peak.The order of WUE from high to low is as follows:P.betulaefolia Bge.>P.pseudopashia Yu> P.pashia Buch.Ham.>P.pyrifolia Nakai. |
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| Keywords: | plant of Pyrus rootstock photosynthetic characters water utilization |
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