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Journal of Integrative Agriculture  2026, Vol. 25 Issue (6): 2623-2626    DOI: 10.1016/j.jia.2026.03.019
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A novel labor-saving strategy for hybrid rice seed production

Quan Gan, Ran Zhou, Hao Yu, Cuixiang Lin, Bin Teng, Fengshun Song#, Dahu Ni#

Rice Research Institute, Anhui Academy of Agricultural Sciences/Key Laboratory of Rice Germplasm Innovation and Molecular Improvement in Anhui Province, Hefei 230001, China

 Highlights 

OsGATA15 plays an important role in regulating the growth and development of the rice flag leaf.

The small flag leaf restorer line NP27 offers a novel breeding strategy and germplasm resource for hybrid rice seed production without leaf-cutting.

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摘要  

高效、省力的制种生产对杂交水稻至关重要。在制种过程中,需要割除剑叶以消除授粉障碍并提高水稻种子产量。然而,这一过程对劳动强度和操作技能要求极高,且不可避免地会对稻穗造成一定损伤。本研究通过对籼稻品系93-11进行⁶⁰Co-γ辐射处理,创制出一个新型小剑叶突变体ym66。图位克隆分析表明,该现象是由GATA型转录因子OsGATA15中的插入突变所致。我们将ym66突变体与籼稻品系YHSM杂交,培育出优良的小剑叶恢复系NP27。在制种过程中,NP27在不割除剑叶的情况下,其种子产量并未降低。此外,其F₁代在株型和稻米品质方面均表现出优良性状。这些结果表明,这种OsGATA15基因的新型小剑叶等位变异能够有效简化水稻制种流程,在杂交水稻中具有良好的应用潜力。



Received: 18 November 2025   Accepted: 02 February 2025 Online: 10 March 2026  
Fund: 

This research was supported by the Key Research and Development Program of Anhui Province, China (2023h11020006 and 2023n06020006), the National Natural Science Foundation of China (32301738), the Science and Technology Innovation and Breakthrough Plan Program of Anhui Province, China (202423m10050002), and the Jianghuai Granary Program, China (2026YL009).

About author:  #Correspondence Dahu Ni, E-mail: dahuni1974@163.com; Fengshun Song, E-mail: sfs108@163.com

Cite this article: 

Quan Gan, Ran Zhou, Hao Yu, Cuixiang Lin, Bin Teng, Fengshun Song, Dahu Ni. 2026. A novel labor-saving strategy for hybrid rice seed production. Journal of Integrative Agriculture, 25(6): 2623-2626.

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