利用高代回交导入群体定位大豆品质性状QTL
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中国农业科学院作物科学研究所 / 农业部北京大豆生物学重点实验室

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国家转基因生物新品种培育重大专项(2016ZX08004-004);国家重点研发计划项目(2017YFD0101400);中国农业科学院科技创新工程项目


QTL Mapping of Quality Traits in Soybean with Advanced Backcross Introgression Population
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Institute of Crop Science, Chinese Academy of Agricultural Sciences / Key Laboratory of Soybean Biology (Beijing), Ministry of Agriculture

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Major National Special Project of GMO New Varieties Breeding (2016ZX08004-004),National Key R & D Project (2017YFD0101400), Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences

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    摘要:

    对大豆品质性状 QTL 的定位,为大豆分子育种提供理论依据。本研究以‘中黄 13’(轮回亲本)ב东山 69’供 体亲本)的 142 个家系的高代回交导入系群体 BC2F7,利用具有多态性的 113 对 SSR 引物构建了一张涵盖除 B2 之外的 19 个 大豆连锁群、总长度为 1630.95 cM、平均遗传距离为 14.43 cM 的遗传连锁图谱。利用近红外光谱分析法(NIR)、气相色谱技 术(GC)分析群体蛋白质、脂肪及五种脂肪酸主要组分含量;采用 ICIM-ADD 作图法定位 QTL。两年共定位到 33 个 QTL,其 中与蛋白质、脂肪、硬脂酸、棕榈酸、亚油酸、油酸和亚麻酸相关的 QTL 分别为 5、2、6、11、4、3、3 个,Sat_003~Sat_147 两年均被检测出与油酸含量呈负相关,5 个区间与两个性状含量相关,Satt523~Sat_405 与棕榈酸、蛋白质相关,Staga001~Satt658、 Satt263~Satt651 与油酸、硬脂酸相关,Satt228~att525 与亚油酸、蛋白质相关,Satt658~Satt433 与亚麻酸、硬脂酸相关;总体 而言,定位结果在一定程度上阐明了品质性状的相关性,对大豆分子育种中优良品种的选育具有参考意义。

    Abstract:

    QTL mapping of soybean quality traits can provide a theoretical basis for molecular hybridization breeding. In this study, 113 genetic pairs of SSR primers with polymorphism were used to construct a genetic linkage map with a total length of 1630.95 cM and an average genetic distance of 14.43 cM, covering 19 soybean linkage groups (except B2) of 142 lines of advanced backcross introgression population BC2F7 derived from soybean ‘Zhonghuang 13’ (recurrent parent) × ‘Dongshan 69’ (donor parent). Near-infrared spectroscopy (NIR) and gas chromatography (GC) were used to determine the contents of protein, fat and five major fatty acids in soybean. A total of 33 QTLs were identified using ICIM-ADD in two years. The number of mapped QTL were 5, 2, 6, 11, 4, 3, and 3 for protein (PR), fat (OIL), stearic acid (SA), palmitic acid (PA), linoleic acid (LA), oleic acid (OA), and linolenic acid (LNA), respectively. Sat_003 - Sat_147 were negatively correlated with OA in the two years. Satt523 - Sat_405 were correlated with PA and PR. Staga001 -Satt658 and Satt263 - Satt651 were correlated with OA and SA. Satt228 - att525 were correlated with LA and PR. Satt658 - Satt433 were correlated with LNA and SA. The mapping results have clarified the correlation of quality traits to a certain extent, and have reference significance for the selection of excellent varieties in soybean molecular breeding.

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任丙新,韩粉霞,杨华.利用高代回交导入群体定位大豆品质性状QTL[J].植物遗传资源学报,2020,21(5):1255-1262.

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  • 收稿日期:2020-01-02
  • 最后修改日期:2020-04-10
  • 录用日期:2020-05-06
  • 在线发布日期: 2020-09-09
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