| 水稻叶色突变体高光合特性研究 |
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| 引用本文： | 欧立军.水稻叶色突变体高光合特性研究[J].作物学报,2011,37(10):1860-1867. |
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| 作者姓名： | 欧立军 |
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| 作者单位： | 怀化学院生命科学系 / 民族药用植物资源研究与利用湖南省重点实验室 / 湘西药用植物与民族植物学湖南省高校重点实验室，湖南怀化418008 |
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| 基金项目： | 怀化学院民族药用植物资源研究与利用湖南省重点实验室项目(SYSXM200905)资助 |
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| 摘 要： | 标810S是温敏核不育系810S中的淡黄绿叶自然突变株，具有较高的光合速率。本文对突变体的光合色素、光合速率、荧光参数和光合关键酶活性等研究发现，标810S光合色素约为810S的一半，强光条件下标810S光合速率(Pn)比对照高，且没有明显的“午休”现象。标810S气孔导度(Gs)显著增加，叶绿素荧光动力学参数显示，标810S光量子转化效率高；光合酶1,5-二磷酸核酮糖羧化酶(RuBPCase)活性是对照的69.80%，磷酸烯醇式丙酮酸羧化酶(PEPCase)和NADP-苹果酸酶(NADH-ME)却比810S分别上升79.50%和69.06%。研究结果认为，光合色素含量下降是标810S叶片呈淡黄绿叶色的根本原因。突变体通过减少热耗散和提高光合电子传递速率来提高光能利用效率，为暗反应提供足够的同化力，而较高的PEPC活性和较大的气孔导度使其能更有效地固定CO2，光反应和暗反应的协同使突变体具有较高的光合速率。
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| 关 键 词： | 水稻叶色突变体 光合特性 气孔导度 叶绿素荧光 光合酶 |
| 收稿时间： | 2011-01-31 |
High Photosynthetic Efficiency of Leaf Colour Mutant of Rice (Oryza sativa L.) |
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| OU Li-Jun.High Photosynthetic Efficiency of Leaf Colour Mutant of Rice (Oryza sativa L.)[J].Acta Agronomica Sinica,2011,37(10):1860-1867. |
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| Authors: | OU Li-Jun |
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| Institution: | Key Laboratory of Hunan Province for Study and Utilization of Ethnic Medicinal Plant Resources / Key Laboratory of Hunan Higher Education for Hunan-Western Medicinal Plant and Ethnobotany, Department of Life Sciences, Huaihua University, Huaihua 418008, China |
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| Abstract: | Biao 810S is a yellow-green leaf mutant of the thermosensitive genic male sterile (TGMS) rice which has higher pho-tosynthetic rate. The photosynthetic characteristics of Biao 810S were studied with the wild type TGMS line 810S as a control to clarify the physiological basis of high photosynthetic efficiency and provide a theoretical basis for further utilization. The photosynthetic pigment, photosynthetic rate, fluorescence parameters and activity of photosynthetic key enzyme were measured. The content of ... |
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| Keywords: | Leaf colour mutant of rice Photosynthetic characteristics Stomatal conductance Chlorophyll fluorescence Photo-synthetic enzyme |
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