Uptake and utilization of different nitrogen forms in erect panicle japonica rice cultivar

Journal of plant interactions

article

Jun Yi¹  Jiping Gao¹  Wenzhong Zhang¹  Wei Xin¹  Yanze Zhao¹  Ziang Li¹  Chen Zhao¹  Ying Zhao¹ 

[1] Key Laboratory of Northern Japonica Rice Genetics and Breeding, Ministry of Education and Liaoning Province, Key Laboratory of Northeast Rice Biology and Genetics and Breeding, Ministry of Agriculture, Rice Research Institute of Shenyang Agricultural University

关键词: Erect panicle japonica;    hydroponics;    metabolic genes;    nitrogen uptake rate;    nitrogen use efficiency;   

DOI  :  10.1080/17429145.2019.1629036

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

The response of rice to nitrogen (N) was compared between three rice cultivars and three N treatments: 1:0, 0:1, and 1:1 NH4 + :NO3 −. The three rice cultivars used were: Shennong1401 (SN1401, erect panicle rice cultivar) and Habataki and Sasanishiki (curved panicle rice cultivars). At the booting stage, higher gene expression and enzyme activity associated with N metabolism of rice in the including-NO3 − solutions effected the secondary assimilation of N metabolism, and ultimately increased grain development. During the tillering stage, lower NO3 − uptake rates and glutamine synthetase and NADH-dependent glutamate synthase activity in Habataki and Sasanishiki under the NO3 − treatments resulted in lower effective panicle number per plant. However, no significant differences were observed in the grain yield per plant of SN1401 between NH4 + and NO3 − treatments. Our results indicate that the erect panicle rice cultivar can grow better under the including-NO3 − treatment.

【 授权许可】

CC BY|CC BY-NC