| 复序橐吾的光合特性及其影响因子 |
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| 引用本文： | 赵国禹,董然,赫微微.复序橐吾的光合特性及其影响因子[J].东北林业大学学报,2011,39(1):41-43. |
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| 作者姓名： | 赵国禹 董然 赫微微 |
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| 作者单位： | 吉林农业大学,长春,130118 |
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| 摘 要： | 采用C IRAS—2光合仪对1年生复序橐吾(Ligularia jaluensisKom.)的光合作用日变化、光响应曲线进行测定,光响应曲线采用叶子飘新模型进行拟合;对影响其光合作用的生理因子和环境因子进行相关分析。结果表明:复序橐吾净光合速率日变化在夏季呈双峰型,有光合"午休"现象,午休现象主要受非气孔因素限制。复序橐吾净光合速率与叶片温度呈极显著正相关,与外界CO2摩尔分数呈极显著负相关,与胞间CO2摩尔分数呈显著负相关。复序橐吾光饱和点为747.49μmol.m-2.s-1、光补偿点为19.06μmol.m-2.s-1、最大净光合速率为4.95μmol.m-2.s-1及表观量子效率为0.067 mol/mol,表现出阴生植物特性。
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| 关 键 词： | 复序橐吾 光合特性 影响因子 光响应曲线新模型 |
Photosynthetic Characteristics of Ligularia jaluensis and Its Influencing Factors |
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| Zhao Guoyu,Dong Ran,He Weiwei.Photosynthetic Characteristics of Ligularia jaluensis and Its Influencing Factors[J].Journal of Northeast Forestry University,2011,39(1):41-43. |
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| Authors: | Zhao Guoyu Dong Ran He Weiwei |
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| Institution: | Zhao Guoyu,Dong Ran,He Weiwei(School of Horticulture,Jilin Agricultural University,Changchun 130118,P.R.China) |
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| Abstract: | Diurnal variation of photosynthesis and light response curve for 1-year-old Ligularia jaluensis were determined by CIRAS-2 Portable Photosynthesis System.Light response curve was simulated with an improved model of light-response curve of photosynthesis.The correlations between physiological and environmental factors influencing the photosynthesis significantly were analyzed.Results showed that the diurnal change of net photosynthetic rate of L.jaluensis in summer could be expressed with a bimodal curve,and... |
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| Keywords: | Ligularia jaluensis Photosynthetic characteristics Influencing factors Improved model of light-response curve of photosynthesis |
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