Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (6): 951-961.DOI: 10.1016/S2095-3119(13)60315-9

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QTL Mapping for Dough Mixing Characteristics in a Recombinant Inbred Population Derived from a Waxy×Strong Gluten Wheat (Triticum aestivum L.)

 ZHENG Fei-fei, DENG Zhi-ying, SHI Cui-lan, ZHANG Xin-ye , TIAN Ji-chun   

  1. State Key Laboratory of Crop Biology, /Key Laboratory of Crop Biology of Shandong Province, Education Department of Shandong Province/Agronomy College, Shandong Agricultural University, Tai’an 271018, P.R.China
  • 收稿日期:2012-09-08 出版日期:2013-06-01 发布日期:2013-06-09
  • 通讯作者: Correspondence TIAN Ji-chun, Tel/Fax: +86-538-8242040, E-mail: jctian@sdau.edu.cn, jctiansd@126.com
  • 作者简介:ZHENG Fei-fei, E-mail: feifeizh8620@163.com
  • 基金资助:

    This research was supported by the National Natural Science Foundation of China (31171554), the National Basic Research Program of China (2009CB118301), and the Natural Science Foundation of Shandong Province, China (ZR2009DQ009).

QTL Mapping for Dough Mixing Characteristics in a Recombinant Inbred Population Derived from a Waxy×Strong Gluten Wheat (Triticum aestivum L.)

 ZHENG Fei-fei, DENG Zhi-ying, SHI Cui-lan, ZHANG Xin-ye , TIAN Ji-chun   

  1. State Key Laboratory of Crop Biology, /Key Laboratory of Crop Biology of Shandong Province, Education Department of Shandong Province/Agronomy College, Shandong Agricultural University, Tai’an 271018, P.R.China
  • Received:2012-09-08 Online:2013-06-01 Published:2013-06-09
  • Contact: Correspondence TIAN Ji-chun, Tel/Fax: +86-538-8242040, E-mail: jctian@sdau.edu.cn, jctiansd@126.com
  • About author:ZHENG Fei-fei, E-mail: feifeizh8620@163.com
  • Supported by:

    This research was supported by the National Natural Science Foundation of China (31171554), the National Basic Research Program of China (2009CB118301), and the Natural Science Foundation of Shandong Province, China (ZR2009DQ009).

摘要: Protein and starch are the most important traits in determining processing quality in wheat. In order to understand the genetic basis of the influence of Waxy protein (Wx) and high molecular weight gluten subunit (HMW-GS) on processing quality, 256 recombinant inbred lines (RILs) derived from the cross of waxy wheat Nuomai 1 and Gaocheng 8901 were used as mapping population. DArT (diversity arrays technology), SSR (simple sequence repeat), HMW-GS, and Wx markers were used to construct the molecular genetic linkage map. QTLs for mixing peak time (MPT), mixing peak value (MPV), mixing peak width (MPW), and mixing peak integral (MPI) of Mixograph parameters were evaluated in three different environments. The genetic map comprised 498 markers, including 479 DArT, 14 SSR, 2 HMW-GS, and 3 Wx protein markers, covering 4 229.7 cM with an average distance of 9.77 cM. These markers were identified on 21 chromosomes. Eighteen additive QTLs were detected in three different environments, which were distributed on chromosomes 1A, 1B, 1D, 4A, 6A, and 7D. QMPT-1D.1 and QMPT-1D.2 were close to the Glu-D1 marker accounting for 35.2, 22.22 and 36.57% of the phenotypic variance in three environments, respectively. QMPV-1D and QMPV-4A were detected in all environments, and QMPV-4A was the nearest to Wx-B1. One minor QTL, QMPI-1A, was detected under three environments with the genetic distances of 0.9 cM from the nearest marker Glu-A1, explaining from 5.31 to 6.67% of the phenotypic variance. Three pairs of epistatic QTLs were identified on chromosomes 2D and 4A. Therefore, this genetic map is very important and useful for quality trait related QTL mapping in wheat. In addition, the finding of several major QTLs, based on the genetic analyses, further suggested the importance of Glu-1 loci on dough mixing characteristics.

关键词: bread wheat , RIL population , genetic map , mixograph , QTL

Abstract: Protein and starch are the most important traits in determining processing quality in wheat. In order to understand the genetic basis of the influence of Waxy protein (Wx) and high molecular weight gluten subunit (HMW-GS) on processing quality, 256 recombinant inbred lines (RILs) derived from the cross of waxy wheat Nuomai 1 and Gaocheng 8901 were used as mapping population. DArT (diversity arrays technology), SSR (simple sequence repeat), HMW-GS, and Wx markers were used to construct the molecular genetic linkage map. QTLs for mixing peak time (MPT), mixing peak value (MPV), mixing peak width (MPW), and mixing peak integral (MPI) of Mixograph parameters were evaluated in three different environments. The genetic map comprised 498 markers, including 479 DArT, 14 SSR, 2 HMW-GS, and 3 Wx protein markers, covering 4 229.7 cM with an average distance of 9.77 cM. These markers were identified on 21 chromosomes. Eighteen additive QTLs were detected in three different environments, which were distributed on chromosomes 1A, 1B, 1D, 4A, 6A, and 7D. QMPT-1D.1 and QMPT-1D.2 were close to the Glu-D1 marker accounting for 35.2, 22.22 and 36.57% of the phenotypic variance in three environments, respectively. QMPV-1D and QMPV-4A were detected in all environments, and QMPV-4A was the nearest to Wx-B1. One minor QTL, QMPI-1A, was detected under three environments with the genetic distances of 0.9 cM from the nearest marker Glu-A1, explaining from 5.31 to 6.67% of the phenotypic variance. Three pairs of epistatic QTLs were identified on chromosomes 2D and 4A. Therefore, this genetic map is very important and useful for quality trait related QTL mapping in wheat. In addition, the finding of several major QTLs, based on the genetic analyses, further suggested the importance of Glu-1 loci on dough mixing characteristics.

Key words: bread wheat , RIL population , genetic map , mixograph , QTL