| 低温对辣椒幼苗叶片氮及叶绿素含量的影响 |
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| 引用本文： | 白青华,郭晓冬,王萍,孙利鹏.低温对辣椒幼苗叶片氮及叶绿素含量的影响[J].甘肃农业大学学报,2009,44(6). |
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| 作者姓名： | 白青华 郭晓冬 王萍 孙利鹏 |
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| 作者单位： | 1. 甘肃农业大学农学院,甘肃,兰州,730070
2. 甘肃省农业科学院蔬菜研究所,甘肃,兰州,730070 |
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| 摘 要： | 在模拟日光温室的条件下,研究了低温对辣椒幼苗叶片内氮和叶绿素含量的影响,结果表明:低温可引起幼苗叶片氮素含量的下降,15℃/9℃低温处理的叶片氮素含量大幅下降,处理15 d后较处理前叶绿素下降了6.63%,15℃/9℃和10℃/5℃低温处理15 d后叶绿素a、叶绿素b及叶绿素(a+b)均下降,其中10℃/5℃处理较28℃/18℃处理,叶绿素a下降了45.6%、叶绿素b下降了42.5%,叶绿素(a+b)下降了4.48%;结果还显示,辣椒幼苗叶片氮含量与叶绿素含量间呈正相关,叶片叶绿素含量随氮含量的增加而增加.
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| 关 键 词： | 辣椒 低温 氮素 叶绿素 |
Effect of low temperature on the content N and chlorophyll in leaves of pepper seedlings |
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| BAI Qing-Hua,GUO Xiao-Dong,WANG Ping,SUN Li-Peng.Effect of low temperature on the content N and chlorophyll in leaves of pepper seedlings[J].Journal of Gansu Agricultural University,2009,44(6). |
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| Authors: | BAI Qing-Hua GUO Xiao-Dong WANG Ping SUN Li-Peng |
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| Institution: | BAI Qing-Hua1,GUO Xiao-Dong2,WANG Ping2,SUN Li-Peng1(1.College of Agronomy,Gansu Agricultural University,Lanzhou 730070,China,2.Institute of Vegetable,Gansu Academy of Agricultural Sciences,China) |
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| Abstract: | The effects of low temperature were investigated on the content of N and chlorophyll in pepper leaves under controlled conditions of sunshine used greenhouse in this paper. The results showed low temperature decreased the content of N. The treatment of 15 ℃/9 ℃ reduced significantly the content of N, which decreased of 6.63 % after 15 d compared with 0 d. Both 15 ℃/9 ℃ and 10 ℃/5 ℃ treatments for 15 d reduced the content of Chl a, Chl b and Chl (a+b). The treatment of 10 ℃/5 ℃ decreased 45.6 % of Chl a, 42.5 % of Chl b and 4.48 % of Chl (a+b) compared with the treatment of 28 ℃/18 ℃. There was a positive relationship between the nitrogen content and chlorophyll content. |
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| Keywords: | pepper low temperature nitrogen chlorophyll |
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