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Mapping of QTLs for Brown Rice Traits Based on Chromosome Segment Substitution Line in Rice ( Oryza sativa L.)

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  • Yujia Leng

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
    These authors contributed equally to this work.)

  • Lianmin Hong

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
    These authors contributed equally to this work.)

  • Tao Tao

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
    These authors contributed equally to this work.)

  • Qianqian Guo

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Qingqing Yang

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Mingqiu Zhang

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Xinzhe Ren

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Sukui Jin

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Xiuling Cai

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China)

  • Jiping Gao

    (Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
    Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China)

Abstract

Brown rice traits are critical to both grain yield and quality. In the present study, the chromosome segment substitution lines (CSSLs) population derived from a cross between japonica Koshihikari and indica Nona Bokra was used to analyze the brown rice length (BRL), brown rice width (BRW), length–width ratio of brown rice (BLWR), brown rice thickness (BRT), brown rice perimeter (BRP), brown rice area (BRA), thousand-grain weight of brown rice (BRGW), brown rice ratio (BRR), taste value of brown rice (BTV), and water content of brown rice (BWC). Correlations analysis showed that most of the brown rice traits had significant correlations with each other, except for BRR, BTV, and BWC. A total of sixty-one QTLs for these traits were identified under three environments, which mapped to chromosomes 1, 2, 3, 5, 6, 7, 8, 10, 11, and 12, with the LOD ranging from 2.52 to 16.68 and accounting for 2.60 to 25.38% of the total phenotypic variations. Moreover, thirty pairs of epistatic interactions for BRL, BRW, BLWR, BRP, and BRA were estimated and distributed on all chromosomes except 10. These findings will provide a further understanding of the genetic basis of brown rice traits and facilitate the genetic improvement of rice yield and quality through breeding.

Suggested Citation

  • Yujia Leng & Lianmin Hong & Tao Tao & Qianqian Guo & Qingqing Yang & Mingqiu Zhang & Xinzhe Ren & Sukui Jin & Xiuling Cai & Jiping Gao, 2023. "Mapping of QTLs for Brown Rice Traits Based on Chromosome Segment Substitution Line in Rice ( Oryza sativa L.)," Agriculture, MDPI, vol. 13(5), pages 1-14, April.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:5:p:928-:d:1131202
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    References listed on IDEAS

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    1. Yihao Yang & Min Guo & Shengyuan Sun & Yelu Zou & Shuangyi Yin & Yannan Liu & Shuzhu Tang & Minghong Gu & Zefeng Yang & Changjie Yan, 2019. "Natural variation of OsGluA2 is involved in grain protein content regulation in rice," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
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