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Genetic Dissection of Milled Rice Grain Shape by Using a Recombinant Inbred Line Population and Validation of qMLWR11.1 and qMLWR11.2

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Title: Genetic Dissection of Milled Rice Grain Shape by Using a Recombinant Inbred Line Population and Validation of qMLWR11.1 and qMLWR11.2
Authors: Liting Zhang, Zhanhua Lu, Zhaoyang Pan, Tengkui Chen, Shiguang Wang, Wei Liu, Xiaofei Wang, Haoxiang Wu, Hao Chen, Yunyi Zhan, Xiuying He
Source: Plants, Vol 13, Iss 22, p 3178 (2024)
Publisher Information: MDPI AG, 2024.
Publication Year: 2024
Collection: LCC:Botany
Subject Terms: rice (Oryza sativa L.), appearance quality, milled rice grain shape, MGL, MGW, MLWR, Botany, QK1-989
More Details: Grain shape in rice (Oryza sativa L.) is a complex trait governed by multiple quantitative trait loci (QTLs). To dissect the genetic basis of rice shape, QTL analysis was conducted for milled rice grain width (MGW), milled rice grain length (MGL), and milled rice length-to-width ratio (MLWR) using a recombinant inbred line (RIL) population of F10 and F11 generations derived from a cross between Yuexiangzhan and Shengbasimiao. A high-density genetic map consisting of 2412 bins was constructed by sequencing 184 RILs, spanning a total length of 2376.46 cM. A total of 19 QTLs related to MGL, MGW, and MLWR were detected under two environments. The range of phenotypic variation attributed to individual QTL ranged from 1.67% to 32.08%. Among those, a novel locus for MGL, MGW and MLWR, designated as qMLWR3.2, was pinpointed within a specific ~0.96-Mb region. Two novel loci for MGW and MLWR, qMLWR11.1 and qMLWR11.2, were verified within ~1.22-Mb and ~0.52-Mb regions using three RIL-developed populations, respectively. These findings lay the foundation for further map-based cloning and molecular design breeding in rice.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 13223178
2223-7747
Relation: https://www.mdpi.com/2223-7747/13/22/3178; https://doaj.org/toc/2223-7747
DOI: 10.3390/plants13223178
Access URL: https://doaj.org/article/786d23fb6d5f4325bbd3d498313f563e
Accession Number: edsdoj.786d23fb6d5f4325bbd3d498313f563e
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  Data: Genetic Dissection of Milled Rice Grain Shape by Using a Recombinant Inbred Line Population and Validation of qMLWR11.1 and qMLWR11.2
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  Data: <searchLink fieldCode="AR" term="%22Liting+Zhang%22">Liting Zhang</searchLink><br /><searchLink fieldCode="AR" term="%22Zhanhua+Lu%22">Zhanhua Lu</searchLink><br /><searchLink fieldCode="AR" term="%22Zhaoyang+Pan%22">Zhaoyang Pan</searchLink><br /><searchLink fieldCode="AR" term="%22Tengkui+Chen%22">Tengkui Chen</searchLink><br /><searchLink fieldCode="AR" term="%22Shiguang+Wang%22">Shiguang Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Wei+Liu%22">Wei Liu</searchLink><br /><searchLink fieldCode="AR" term="%22Xiaofei+Wang%22">Xiaofei Wang</searchLink><br /><searchLink fieldCode="AR" term="%22Haoxiang+Wu%22">Haoxiang Wu</searchLink><br /><searchLink fieldCode="AR" term="%22Hao+Chen%22">Hao Chen</searchLink><br /><searchLink fieldCode="AR" term="%22Yunyi+Zhan%22">Yunyi Zhan</searchLink><br /><searchLink fieldCode="AR" term="%22Xiuying+He%22">Xiuying He</searchLink>
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  Data: Plants, Vol 13, Iss 22, p 3178 (2024)
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  Data: MDPI AG, 2024.
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  Data: 2024
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  Data: LCC:Botany
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  Data: <searchLink fieldCode="DE" term="%22rice+%28Oryza+sativa+L%2E%29%22">rice (Oryza sativa L.)</searchLink><br /><searchLink fieldCode="DE" term="%22appearance+quality%22">appearance quality</searchLink><br /><searchLink fieldCode="DE" term="%22milled+rice+grain+shape%22">milled rice grain shape</searchLink><br /><searchLink fieldCode="DE" term="%22MGL%22">MGL</searchLink><br /><searchLink fieldCode="DE" term="%22MGW%22">MGW</searchLink><br /><searchLink fieldCode="DE" term="%22MLWR%22">MLWR</searchLink><br /><searchLink fieldCode="DE" term="%22Botany%22">Botany</searchLink><br /><searchLink fieldCode="DE" term="%22QK1-989%22">QK1-989</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Grain shape in rice (Oryza sativa L.) is a complex trait governed by multiple quantitative trait loci (QTLs). To dissect the genetic basis of rice shape, QTL analysis was conducted for milled rice grain width (MGW), milled rice grain length (MGL), and milled rice length-to-width ratio (MLWR) using a recombinant inbred line (RIL) population of F10 and F11 generations derived from a cross between Yuexiangzhan and Shengbasimiao. A high-density genetic map consisting of 2412 bins was constructed by sequencing 184 RILs, spanning a total length of 2376.46 cM. A total of 19 QTLs related to MGL, MGW, and MLWR were detected under two environments. The range of phenotypic variation attributed to individual QTL ranged from 1.67% to 32.08%. Among those, a novel locus for MGL, MGW and MLWR, designated as qMLWR3.2, was pinpointed within a specific ~0.96-Mb region. Two novel loci for MGW and MLWR, qMLWR11.1 and qMLWR11.2, were verified within ~1.22-Mb and ~0.52-Mb regions using three RIL-developed populations, respectively. These findings lay the foundation for further map-based cloning and molecular design breeding in rice.
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  Data: https://www.mdpi.com/2223-7747/13/22/3178; https://doaj.org/toc/2223-7747
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  Data: 10.3390/plants13223178
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        Value: 10.3390/plants13223178
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      – Text: English
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        StartPage: 3178
    Subjects:
      – SubjectFull: rice (Oryza sativa L.)
        Type: general
      – SubjectFull: appearance quality
        Type: general
      – SubjectFull: milled rice grain shape
        Type: general
      – SubjectFull: MGL
        Type: general
      – SubjectFull: MGW
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      – SubjectFull: MLWR
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      – SubjectFull: Botany
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      – TitleFull: Genetic Dissection of Milled Rice Grain Shape by Using a Recombinant Inbred Line Population and Validation of qMLWR11.1 and qMLWR11.2
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              Type: published
              Y: 2024
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