[1]张勇,管菊,赵庆勇,等.优质粳稻南粳5818氮高效机制初探[J].江苏农业学报,2024,(09):1586-1593.[doi:doi:10.3969/j.issn.1000-4440.2024.09.002]
　ZHANG Yong,GUAN Ju,ZHAO Qingyong,et al.Preliminary study on the nitrogen efficiency mechanism of high quality japonica rice Nanjing 5818[J].,2024,(09):1586-1593.[doi:doi:10.3969/j.issn.1000-4440.2024.09.002]
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优质粳稻南粳5818氮高效机制初探()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年09期
页码:
1586-1593
栏目:
遗传育种·生理生化
出版日期:
2024-09-30

文章信息/Info

Title:
Preliminary study on the nitrogen efficiency mechanism of high quality japonica rice Nanjing 5818
作者:
张勇1; 2; 管菊1; 赵庆勇1; 陈涛1; 王军3; 王才林1; 张亚东1; 赵凌1
(1.江苏省农业科学院粮食作物研究所/国家耐盐碱水稻技术创新中心华东中心,江苏南京210014；2.江苏省农业科学院无锡分院,江苏无锡214171)
Author(s):
ZHANG Yong1; 2; GUAN Ju1; ZHAO Qingyong1; CHEN Tao1; WANG Jun2; WANG Cailin1; ZHANG Yadong1; ZHAO Ling1
(1.Institute of Food Crops, Jiangsu Academy of Agricultural Sciences/East China Branch of National Center of Technology Innovation for Saline-Alkali Tolerant Rice, Nanjing 210014, China;2.Jiangsu Academy of Agricultural Sciences Wuxi Branch, Wuxi 214171, China)
关键词:
南粳5818; 氮素利用率; 基因表达
Keywords:
Nanjing 5818; nitrogen use efficiency; gene expression
分类号:
S511.2+2
DOI:
doi:10.3969/j.issn.1000-4440.2024.09.002
文献标志码:
A
摘要:
探索水稻氮肥吸收利用分子机制对选育氮素高效利用水稻品种有着重要意义。本研究选用优质粳稻品种南粳5718和南粳5818为试验材料,设置低氮处理(150 kg/hm2)、中氮处理(300 kg/hm2)、高氮处理(450 kg/hm2)和不施氮对照,分析两个粳稻品种氮素利用率的差异及其分子机制。结果表明,南粳5818的氮肥农学利用率、氮素回收率和光合氮素利用率均高于南粳5718。随着施氮量的增加,南粳5718和南粳5818的氮肥农学利用率呈下降趋势。南粳5718和南粳5818的氮素利用相关基因OsNRT1.1B、OsNRT2.2、OsNRT2.3a及OsNRT2.4的相对表达量存在显著差异。在南粳5818中OsNRT2.3b相对表达量与OsNRT2.3a相对表达量的比值显著高于南粳5718。本研究利用分子生物学技术探索了水稻氮素利用率的分子机制,为选育氮素高效利用的水稻品种提供了理论依据。
Abstract:
It is important to explore the molecular mechanism of nitrogen absorption and utilization for breeding rice varieties with high nitrogen utilization efficiency. High quality japonica rice varieties Nanjing 5718 and Nanjing 5818 were used as experimental materials in this study. Low nitrogen treatment (150 kg/hm2), medium nitrogen treatment (300 kg/hm2), high nitrogen treatment (450 kg/hm2) and no nitrogen control were set up. The difference of nitrogen use efficiency between two japonica rice varieties and the molecular mechanism were analyzed. The results showed that the agronomic nitrogen use efficiency, nitrogen recovery rate and photosynthetic nitrogen use efficiency of Nanjing 5818 were higher than those of Nanjing 5718. With the increase of nitrogen application rate, the agronomic nitrogen use efficiency of Nanjing 5718 and Nanjing 5818 decreased. The relative expression levels of nitrogen use related genes OsNRT1.1B, OsNRT2.2, OsNRT2.3a and OsNRT2.4 were significantly different between Nanjing 5718 and Nanjing 5818. The ratio of the relative expression of OsNRT2.3b to the relative expression of OsNRT2.3a in Nanjing 5818 was significantly higher than that in Nanjing 5718. This study explored the molecular mechanism of nitrogen use efficiency in rice by molecular biological techniques, and the results provided a theoretical basis for breeding rice varieties with high nitrogen utilization efficiency.

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备注/Memo

备注/Memo:
收稿日期:2023-12-14基金项目:国家水稻产业技术体系项目(CARS-01)；江苏省种业振兴揭榜挂帅项目[JBGS(2021)041]；长江中下游优质高产高效粳稻新种质创制与应用项目(2023YFD1200900)；太湖地区特色农产品种质资源评价和创新利用研究项目(33212301)作者简介:张勇(1990-),男,山东滨州人,博士,助理研究员,主要研究方向为水稻氮素吸收与利用。(E-mail)20210074@jaas.ac.cn通讯作者:赵凌,(E-mail)zhaoling@jaas.ac.cn
更新日期/Last Update: 2024-11-17