| 遮荫对盆栽一品红光合特性及生长的影响 |
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| 引用本文： | 潘远智,江明艳. 遮荫对盆栽一品红光合特性及生长的影响[J]. 园艺学报, 2006, 33(1): 95-100 |
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| 作者姓名： | 潘远智 江明艳 |
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| 作者单位： | (四川农业大学林学园艺学院, 雅安625014; 中国林业科学研究院林业研究所, 北京100091) |
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| 摘 要： | 研究了不同程度的遮荫(0, 50% , 75% ) 对一品红光合特性及生长的影响。结果表明, 一品红具有较高的光饱和点和较低的光补偿点, 是对光照强度适应能力较强的阳性植物, 但不同栽培品种对遮荫环境的适应性有较大差异。遮荫使一品红叶绿素含量增加, 叶色浓绿, 但降低光合速率, 减少叶片中可溶性糖和可溶性蛋白质含量, 抑制侧枝的生长, 使花头直径、红色苞叶面积减小, 苞叶花青素苷含量降低。
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| 关 键 词： | 一品红 遮荫 光合特性 观赏品质 |
| 文章编号： | 0513-353X（2006）01-0095-06 |
| 收稿时间： | 2005-03-18 |
| 修稿时间： | 2005-03-182005-07-01 |
Effects of Shade on the Photosynthetic Characteristics and Growth of Poinsettia |
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| Pan Yuanzhi,Jiang Mingyan. Effects of Shade on the Photosynthetic Characteristics and Growth of Poinsettia[J]. Acta Horticulturae Sinica, 2006, 33(1): 95-100 |
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| Authors: | Pan Yuanzhi Jiang Mingyan |
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| Affiliation: | (College of Forestry and Horticultural, Sichuan Agricultural University, Ya'an 625014, China; The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China) |
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| Abstract: | The effects of shade degrees 100%,50% and 25% of full sunlight on the growth and photosynthetic characteristics of poinsettia'Prestige'and'Red Velvet' were examined.The results indicated that poinsettia was a sun plant with high light-saturation point and low light-compensation point.But the shade tolerance of different cultivars was different.Under shade conditions,the contents of chlorophyll increased and leaf color greener,but their net photosynthetic rates,the contents of soluble sugars and proteins in leaves decreased and the growth of lateral shoots were inhibited,resulting in decreasing of flower diameters,red bract areas,contents of anthocyanidin in braces finally. |
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| Keywords: | Poinsettia(Euphorbia pulcherrima Willd) Shade Photosynthetic characteristics Ornamental value |
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