| 王乐,相宗杰,孙倩,康建宏,吴宏亮,梁熠,吴娜.干旱区不同谷子品种叶片光合特性对光强的响应[J].干旱地区农业研究,2019,37(1):194~199 |
| 干旱区不同谷子品种叶片光合特性对光强的响应 |
| Response of photosynthetic characteristic of various millet variety leaves to light intensity in arid region |
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| DOI：10.7606/j.issn.1000-7601.2019.01.27 |
| 中文关键词: 谷子 干旱区 光强 光合响应曲线 产量 |
| 英文关键词:millet varieties photosynthetic response curve yield |
| 基金项目:宁夏大学研究生创新项目（GIP2017035）；国家科技支撑项目“黄土高原旱区增粮增效潜力与提升技术研究”（2015BAD22B01）；宁夏重点研发计划项目（科技园区专项） |
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| 中文摘要: |
| 以本地品种小红毛、常规品种陇谷11号、晋谷29号和杂交品种张杂谷5号、华大3号为供试材料，在宁夏同心县旱作田比较孕穗期和灌浆中期不同谷子品种叶片光强-光合响应曲线及光合参数的变化特点。结果表明：在孕穗期，不同谷子品种的表观量子效率在0.044~0.079 μmol·m-2·s-1之间，光补偿点的变化范围在14.11~50.59 μmol·m-2·s-1之间；最大光合速率的变化范围为38.53~50.01 μmol·m-2·s-1，暗呼吸速率变化范围为2.16~5.28 μmol·m-2·s-1。本地品种小红毛在孕穗期的表观量子效率高（0.079 μmol·m-2·s-1），利用低光强的能力较强，而常规品种和杂交品种的最大光合速率较高（陇谷11号和晋谷29号分别为38.53、47.53 μmol·m-2·s-1、张杂谷5号和华大3号分别为44.06、50.01 μmol·m-2·s-1），利用强光的能力强，且杂交品种大于常规品种。常规品种和杂交品种的光合能力强，可为谷子获得高产奠定基础。 |
| 英文摘要: |
| In order to better understand the response of leaf photosynthesis of various millet varieties to light intensity, we used local millet varieties (Xiaohongmao), conventional variety (Longgu 11, Jingu 29), and hybrid varieties (Zhangza 5, Huada 3) as experimental crops. The photosynthetic response curves and photosynthetic parameters were studied in booting and filling stages. It is found that the maximum photosynthetic rate, apparent quantum efficience, dark respiration rate, and light compensation point in booting stage were higher than that in filling stage. At the booting stage, the apparent quantum efficiency of different millet varieties is between 0.044 and 0.079 μmol·m-2·s-1, and the light compensation point varies from 14.11 to 50.59 μmol·m-2·s-1. The maximum photosynthetic rate ranged from 38.53 to 50.01 μmol·m-2·s-1, and the dark respiration rate ranged from 2.16 to 5.28 μmol·m-2·s-1，respectively. Compared with other varieties the apparent quantum yield of Xiaohongmao (local variety) was higher (0.079 μmol·m-2·s-1), and it had a great ability to use low light intensity. Nevertheless, The maximum photosynthesis of conventional varieties and hybrid varieties was higher than local variety (Longgu 11, and Jingu 29 were 38.53 and 47.53 μmol·m-2·s-1, Zhangza 5 and Huada 3 were 44.06 and 50.01 μmol·m-2·s-1, respectively). Conventional varieties and hybrid varieties had a great ability to use highlight intensity, and hybrid variety had a stronger ability to use highlight intensity than conventional variety. Conventional varieties and hybrid varieties had a higher photosynthetic capacity, which established the foundation of high yield. |
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