Identification of Genomic Regions Controlling Chalkiness and Grain Characteristics in a Recombinant Inbred Line Rice Population Based on High-Throughput SNP Markers.

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  • Additional Information
    • Source:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 101551097 Publication Model: Electronic Cited Medium: Internet ISSN: 2073-4425 (Electronic) Linking ISSN: 20734425 NLM ISO Abbreviation: Genes (Basel) Subsets: MEDLINE
    • Publication Information:
      Original Publication: Basel : MDPI
    • Subject Terms:
      Crosses, Genetic*; Oryza/*anatomy & histology ; Oryza/*genetics; Chromosome Mapping ; Chromosomes, Plant ; DNA, Plant/genetics ; Edible Grain/anatomy & histology ; Edible Grain/genetics ; Genetic Association Studies ; Genetic Markers ; High-Throughput Nucleotide Sequencing ; Plants, Genetically Modified ; Polymorphism, Single Nucleotide ; Quantitative Trait Loci ; Sequence Analysis, DNA
    • Abstract:
      Rice ( Oryza sativa L.) is the primary food for half of the global population. Recently, there has been increasing concern in the rice industry regarding the eating and milling quality of rice. This study was conducted to identify genetic information for grain characteristics using a recombinant inbred line (RIL) population from a japonica/indica cross based on high-throughput SNP markers and to provide a strategy for improving rice quality. The RIL population used was derived from a cross of "Kaybonnet (KBNT lpa )" and "ZHE733" named the K/Z RIL population, consisting of 198 lines. A total of 4133 SNP markers were used to identify quantitative trait loci (QTLs) with higher resolution and to identify more accurate candidate genes. The characteristics measured included grain length (GL), grain width (GW), grain length to width ratio (RGLW), hundred grain weight (HGW), and percent chalkiness (PC). QTL analysis was performed using QTL IciMapping software. Continuous distributions and transgressive segregations of all the traits were observed, suggesting that the traits were quantitatively inherited. A total of twenty-eight QTLs and ninety-two candidate genes related to rice grain characteristics were identified. This genetic information is important to develop rice varieties of high quality.
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    • Contributed Indexing:
      Keywords: QTL; SNP; chalkiness; gene; rice
    • Accession Number:
      0 (DNA, Plant)
      0 (Genetic Markers)
    • Publication Date:
      Date Created: 20211127 Date Completed: 20220216 Latest Revision: 20240404
    • Publication Date:
      20240404
    • Accession Number:
      PMC8625982
    • Accession Number:
      10.3390/genes12111690
    • Accession Number:
      34828295