| 不同光照条件下硝酸盐胁迫对黄瓜幼苗生长及光合特性的影响 |
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| 引用本文： | 侯欣,王秀峰,魏珉,杨凤娟,史庆华.不同光照条件下硝酸盐胁迫对黄瓜幼苗生长及光合特性的影响[J].山东农业科学,2010(9):22-25. |
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| 作者姓名： | 侯欣 王秀峰 魏珉 杨凤娟 史庆华 |
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| 作者单位： | 山东农业大学园艺科学与工程学院/园艺作物生物学农业部开放实验室,山东,泰安,271018 |
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| 基金项目： | 国家自然科学基金项目，2009年度山东省农业重大应用技术创新项目，国家自然科学基金青年基金项目 |
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| 摘 要： | 采用营养液培养的方法,研究了不同光照条件下NO3-胁迫对黄瓜幼苗生长、光合色素含量和光合作用的影响。结果表明,NO3-胁迫处理抑制了黄瓜幼苗的生长、增加了光合色素的含量、降低了净光合速率（Pn）和气孔导度（Gs）。与高光照相比,低光照下幼苗生长抑制程度、净光合速率和气孔导度下降程度减轻,而光合色素的增加量升高。低光照在一定程度上可以减轻硝酸盐胁迫对黄瓜幼苗造成的伤害。
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| 关 键 词： | NO3-胁迫 光照 黄瓜 光合作用 叶绿素 |
Effects of Nitrate Stress on Growth and Photosynthetic Characteristics of Cucumber Seedlings under Different Light Intensities |
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| HOU Xin,WANG Xiu-feng,WEI Min,YANG Feng-juan,SHI Qing-hua.Effects of Nitrate Stress on Growth and Photosynthetic Characteristics of Cucumber Seedlings under Different Light Intensities[J].Shandong Agricultural Sciences,2010(9):22-25. |
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| Authors: | HOU Xin WANG Xiu-feng WEI Min YANG Feng-juan SHI Qing-hua |
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| Institution: | HOU Xin,WANG Xiu-feng,WEI Min,YANG Feng-juan,SHI Qing-hua (College of Horticulture Science , Engineering,Sh,ong Agricultural University/Laboratory of Horticultural Crop Biology,Ministry of Agriculture,Taian 271018,China) |
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| Abstract: | Through a solution culture experiment,the effects of NO-3 stress on the growth,photosynthesis pigment content and photosynthesis of cucumber seedlings were studied under different light intensities.The results indicated that NO-3 stress inhibited the seedling growth,increased the content of photosynthesis pigment,decreased the net photosynthetic rate(Pn) and stomatal conductance(Gs).Compared with the high light intensity,the low light intensity alleviated the inhibition to cucumber seedling growth and the d... |
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| Keywords: | NO-3 stress Light intensity Cucumber Photosynthesis Chlorophyll |
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