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Characterization of a naturally occurring early-flowering rice mutant resulting from a novel variation in the Ghd7 locus

Author

Listed:
  • Wen Li

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China)

  • Chongke Zheng

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China)

  • Jinjun Zhou

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China)

  • Zhizhen Zhang

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China
    College of Life Sciences, Shandong Normal University, Jinan, P.R. China)

  • Guanhua Zhou

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China)

  • Xianzhi Xie

    (Shandong Rice Engineering Technology Research Center, Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan, P.R. China)

Abstract

Rice is one of the main staple food crops and is consumed by more than half of the global population. Optimizing the flowering time may help to maximize grain production. In this study, we characterized a rice mutant, Zixiangnuo early-flowering mutant (ZXN-E). Compared with the wild-type variety, Zixiangnuo (ZXN), the mutant plants flowered earlier, were shorter and produced smaller panicles. Bulked segregant analysis revealed a 7-bp deletion in the first exon of the Grain number, plant height, and heading date 7 (Ghd7) locus. The allele with the 7-bp deletion was not detected in the rice varieties included in the 3 000 Rice Genomes Project. Thus, the 7-bp deletion identified in the naturally occurring mutant ZXN-E is a novel variation. Our findings suggest that ZXN-E may be a useful germplasm for breeding new rice varieties.

Suggested Citation

  • Wen Li & Chongke Zheng & Jinjun Zhou & Zhizhen Zhang & Guanhua Zhou & Xianzhi Xie, 2021. "Characterization of a naturally occurring early-flowering rice mutant resulting from a novel variation in the Ghd7 locus," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 57(4), pages 166-169.
    • Handle: RePEc:caa:jnlcjg:v:57:y:2021:i:4:id:36-2021-cjgpb
    DOI: 10.17221/36/2021-CJGPB
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    Cited by:

    1. Jurica Primorac & Hrvoje Šarčević & Zrinka Knezović & Aleš Vokurka & Ana Mandić & Snježana Bolarić, 2023. "Changes in Allele Frequencies and Genetic Diversity in Red Clover after Selection for Cold Tolerance Using SSR Markers," Agriculture, MDPI, vol. 13(10), pages 1-13, October.

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