| 氮高效水稻基因型鉴定与筛选方法的研究 |
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| 引用本文： | 程建峰,蒋海燕,刘宜柏,戴廷波,曹卫星.氮高效水稻基因型鉴定与筛选方法的研究[J].中国水稻科学,2010,24(2):175-182. |
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| 作者姓名： | 程建峰 蒋海燕 刘宜柏 戴廷波 曹卫星 |
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| 作者单位： | 1. 江西农业大学教育部作物生理生态与遗传育种重点实验室,江西南昌,330045
2. 南京农业大学农业部作物生长调控重点开放实验室,江苏南京,210095 |
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| 基金项目： | 国家自然科学基金资助项目，国家863计划资助项目 |
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| 摘 要： | 采用掺沙土培法,以10个氮效率存在显著差异的水稻基因型为材料,分析了6个氮水平下水稻拔节期、孕穗期、抽穗期和成熟期的氮吸收效率(NAE)、氮利用效率(NUE)和氮收获指数(NHI)的基因型差异,建立了氮高效水稻基因型鉴定与筛选的方法。结果表明,水稻NAE随氮水平增加先升后降,以中氮(0.177g/kg,以纯N计)为最高;水稻NUE和NHI随氮水平增加而下降。水稻NAE随生育期推进而上升,水稻NUE的大小则为拔节期抽穗期成熟期孕穗期。基因型和氮水平对水稻NAE、NUE和NHI的影响达极显著水平,以氮水平影响最大,基因型次之。基因型×氮水平互作对NAE和NUE的影响达极显著水平,而对NHI无显著影响。NAE和NUE的基因型差异均以拔节期最大,这一时期为水稻高NAE和NUE基因型鉴定与筛选的最佳时期。土培盆栽下,水稻高NAE、NUE和NHI鉴定与筛选的最适土壤有效氮含量分别为0.157g/kg(拔节期)、低氮(拔节期)和0.277g/kg(成熟期)。
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| 关 键 词： | 水稻 基因型 氮效率 鉴定 筛选 |
| 收稿时间： | 1900-01-01; |
Methods for Identification and Screening of Rice Genotypes with High Nitrogen Efficiency |
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| CHENG Jian-feng,JIANG Han-yan,LIU Yi-bai,DAI Ting-bo,CAO Wei-xing.Methods for Identification and Screening of Rice Genotypes with High Nitrogen Efficiency[J].Chinese Journal of Rice Science,2010,24(2):175-182. |
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| Authors: | CHENG Jian-feng JIANG Han-yan LIU Yi-bai DAI Ting-bo CAO Wei-xing |
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| Institution: | CHENG Jian-feng1,JIANG Han-yan1,LIU Yi-bai1,DAI Ting-bo2,CAO Wei-xing2(1Key Laboratory of Crop Physiology,Ecology , Genetic Breeding,Ministry of Education,Jiangxi Agricultural University,Nanchang 330045,China,2Key Laboratory of Crop Growth Regulation,Ministry of Agriculture,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | Genotypic differences in nitrogen absorption efficiency (NAE),nitrogen utilization efficiency (NUE) and nitrogen harvest index (NHI) were investigated in ten rice genotypes with different nitrogen efficiencies at the elongation,booting,heading and maturity stages under six nitrogen levels in a pot experiment with sand-soil mixtures at various ratios.The results showed that NAE firstly increased and then decreased with increasing nitrogen rates,and the peak NAE was found under medium nitrogen rate (0.177 g/k... |
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| Keywords: | rice genotype nitrogen efficiency identification screening |
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