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首页 > 过刊浏览>2022年第23卷第5期 >1458-1464. DOI:10.13430/j.cnki.jpgr.20220330003
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水稻垩白QTL位点qCG5的定位分析
作者:
作者单位:

1.宁夏农林科学院农作物研究所;2.中国农业科学院作物科学研究所/国家农作物基因资源与基因改良重大科学工程/农业部作物种质资源与生物技术重点开放实验室

基金项目:

宁夏回族自治区水稻育种专项（2018NYYZ0302）；宁夏回族自治区自然科学基金项目( 2022AAC03459)；宁夏回族自治区农业科技自主创新资金项目(NGSB-2021-13-3-3)


QTL Mapping for qCG5 of Chalky Trait in Rice
Author:
Affiliation:

1.Institute of Crop Sciences, Ningxia Academy of Agricultural and Forestry Sciences;2.Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resource and Genetic Improvement/Key Laboratory of Crop Germplasm Resources and Biotechnology, Ministry of Agriculture

Fund Project:

Ningxia Hui Autonomous Region Rice Breeding Program（2018NYYZ0302），Ningxia Hui Autonomous Region Natural Science Foundation of China(2022AAC03459)，Ningxia Hui Autonomous Region Agricultural Science and Technology Independent Innovation Fund (NGSB-2021-13-3-3)

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    摘要:

    为挖掘水稻外观品质相关性状基因位点，以水稻重组自交系群体为材料，于2019-2021年进行稻米垩白粒率、垩白度和粒型表型数据采集及QTL定位分析。结果表明，共检测到外观品质性状相关QTL 12个，其中垩白粒率相关的QTL4个，分别位于5号和6号染色体上，贡献率为3.53%、18.32%、13.97%和5.62%；垩白度相关的QTL3个，分别位于5号和6号染色体上，贡献率为15.64%、12.29%和6.27%；粒形相关QTL5个，分别位于5号和12号染色体上，贡献率为42.56%、46.75%、55.50%、3.86和4.30%，垩白粒率和垩白度共定位区间Marker49932-Marker160033（qCGP-5-2、qCGP-5-3和qCGG-5-1）的贡献率超过10%，遗传距离较小（0.833cM）。经过对比，Marker49932-Marker160033区间是一个新的垩白粒率和垩白度主效QTL区域，可进一步进行精细定位，对水稻品质育种将具有重要意义。

    Abstract:

    In order to explore the genetic loci underlying rice appearance quality-related traits , QTL mapping of chalky grain rate, chalkiness degree and grain type phenotypes in recombinant inbred lines were carried out based on the three-year phenotypic datasets (2019-2021). Twelve QTL related to appearance quality traits were identified. Four QTL to chalkiness percentage were located on chromosome 5 and 6 with the contribution rates of 3.53%, 18.32%, 13.97% and 5.62%, respectively. Three chalkiness-related QTL on chromosome 5 and 6 contributed to 15.64%, 12.29% and 6.27% of phenotypic variation. Five QTL were identifed on chromosome 5 and 12 with the contribution rates of 42.56%, 46.75%, 55.50%, 3.86% and 4.30%, respectively. The genetic interval (0.833 cM) between the markers Marker49932 and Marker160033, where three QTL qCGP-5-2, qCGP-5-3 and qCGG-5-1 of chalkiness rate and chalkiness degree were resided, contributes >10% of phenotypic variation. The locus in Marker49932-Marker160033 interval is a new QTL for chalky grain rate and chalkiness, which can be further delimited in a higher resolution and might be of great significance in rice quality breeding.

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引用本文

陈 丽,马 静,刘 炜,等.水稻垩白QTL位点qCG5的定位分析[J].植物遗传资源学报,2022,23(5):1458-1464.

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  • 收稿日期:2022-03-30
  • 最后修改日期:2022-04-25
  • 录用日期:2022-07-05
  • 在线发布日期: 2022-09-09
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