| 不同基因型小麦品种根系形态对低氮胁迫的响应 |
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| 引用本文： | 岳慧芳,任永哲,李乐,王新博,吕伟增,龚璞,王志强,辛泽毓,林同保.不同基因型小麦品种根系形态对低氮胁迫的响应[J].河南农业大学学报,2017,51(4). |
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| 作者姓名： | 岳慧芳 任永哲 李乐 王新博 吕伟增 龚璞 王志强 辛泽毓 林同保 |
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| 作者单位： | 河南农业大学农学院,河南郑州450002;河南农业大学河南省粮食作物协同创新中心,河南郑州450002;河南农业大学小麦玉米作物学国家重点实验室,河南郑州450002 |
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| 基金项目： | 国家自然科学基金项目，国家重点研发计划项目 |
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| 摘 要： | 以8个不同基因型的小麦品种为材料,在4个不同供氮水平(0,0.05,0.1,2 mmol·L~(-1))下,研究了不同根系形态参数对氮素的响应情况。结果表明,根据不同品种的根系性状对低氮胁迫的响应情况,可以将8个供试小麦品种分为3类:第1类品种以辛石麦和跃进5号为代表,不同根系形态参数对低氮响应较好,但地上部生物量随氮素水平的降低而降低;第2类品种以西农979和陕优225为代表,根系形态参数对低氮响应较差,且地上部生物量随着氮素水平的降低而降低;第3类品种以孟县4号为代表,地上部生物量与根系形态参数均对低氮响应差。
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| 关 键 词： | 小麦 基因型 根系形态 低氮响应 |
The response of root morphological traits to low nitrogen stress in different genotypic wheat cultivars |
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| YUE Huifang,REN Yongzhe,LI Le,WANG Xinbo,LV Weizeng,GONG Pu,WANG Zhiqiang,XIN Zeyu,LIN Tongbao.The response of root morphological traits to low nitrogen stress in different genotypic wheat cultivars[J].Journal of Henan Agricultural University,2017,51(4). |
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| Authors: | YUE Huifang REN Yongzhe LI Le WANG Xinbo LV Weizeng GONG Pu WANG Zhiqiang XIN Zeyu LIN Tongbao |
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| Abstract: | In this study,eight wheat cultivars with different genotypes were used to study the effects of the root morphological parameters on nitrogen under four different nitrogen supply levels (0,0.05,0.1,2 mmol · L-1).The responses of different cultivars to different nitrogen levels were investigated according to root traits.The results show that the eight wheat cuhivars can be classified into three categories:The first one,represented by Xinshimai and Yuejin 5,had a significant decrease in aboveground biomass with the decreasing of nitrogen level,but the root parameters had a good response to low nitrogen;The second one,represented by Xinong 979 and Shan you 225,had significant lower shoot biomass with the decrease of nitrogen level,but the root parameters had poor response to low nitrogen;The third one was represented by Mengxian 4,whose the shoot biomass and root parameters had poor response to low nitrogen. |
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| Keywords: | wheat genotype root morphological traits low nitrogen response |
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