Reviews and Special Topics

Progress in Regulation of Important Agronomic Traits by Semi-Dwarf Gene sd1 in Rice

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  • 1Yangtze University, Jingzhou 434025, China
    2China National Rice Research Institute, Hangzhou 311401, China
    3Agro-Tech Extension and Service Station of Jiangbei District, Ningbo 315033, China

Received date: 2023-11-04

  Revised date: 2024-01-09

  Online published: 2025-01-14

Abstract

The cultivation and popularization of semi-dwarf varieties have promoted the “Green Revolution” of rice. The semi-dwarf gene sd1 in rice is a key gene responsible for gibberellin synthesis, which decreases plant height, increases harvest index. The application of sd1 addressed the problem of high yield and lodging under conditions of increased nitrogen fertilizer application. In this paper, the isolation and functional analysis of the sd1 gene were reviewed, the differences in important agronomic traits among different haplotypes of sd1 were analyzed, and the mechanisms by which the sd1 gene regulated key agronomic traits such as growth period, plant height, number of panicles per plant, yield per plant, lodging resistance, seed dormancy, and nitrogen use efficiency were reviewed. The effect of the sd1 gene on rice yield was discussed, along with the application of gene editing technology to generate sd1 mutations for the rapid improvement of rice varieties. Moreover, the potential application of the sd1 gene was anticipated.

Cite this article

ZHANG Fengyong, YING Xiaoping, ZHANG Jian, YANG Longwei, YING Jiezheng . Progress in Regulation of Important Agronomic Traits by Semi-Dwarf Gene sd1 in Rice[J]. Chinese Journal OF Rice Science, 2025 , 39(1) : 24 -32 . DOI: 10.16819/j.1001-7216.2025.231104

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