期刊
JOURNAL OF GENETICS
卷 92, 期 1, 页码 69-79出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12041-013-0232-4
关键词
wheat; high-molecular-weight glutenin subunits; waxy proteins; dough-mixing properties; molecular mapping; Triticum aestivum L.
资金
- Natural Science Foundation of Shandong Province, China [ZR2009DQ009]
- National Natural Science Foundation of China [31171554, 30971764]
- National Basic Research Program of China [2009CB118301]
- National Major Projects of Cultivated Transgenic New Varieties Foundation of China [2008ZX08002-004, 2009ZX08002-017B]
- Shandong Provincial Agriculture Liangzhong Project Foundation of China
The glutenin and waxy loci of wheat are important determinants of dough quality. This study was conducted to evaluate the effects of high-molecular-weight glutenin (HMW-GS) and waxy alleles on dough-mixing properties. Molecular mapping was used to investigate these effects on Mixograph properties in a population of 290 (Nuomai1 x Gaocheng8901) recombinant inbred lines (RILs) from three environments in the harvest years 2008, 2009 and 2011. The results indicated the following: (i) the Glu-A1 and Glu-D1 loci have greater impacts on Mixograph properties compared to the Wx-1 loci and the effects of Glu-D1d and Glu-D1h on dough mixing are better than those of Glu-D1f and Glu-D1new1 in this population; (ii) the interactions between the Glu-1 and Wx-1 loci affected some traits, especially the midline peak value (MPV), and the lack of Wx-B1 or Wx-D1 led to increased MPV for all types of Glu-1 loci; and (iii) 30 quantitative-trait loci (QTL) over nine wheat chromosomes were identified with ICIM analysis based on the genetic map of 498 loci. Eight major QTL and 16 QTL in the Glu-1 loci from the three environments were found. The major QTL clusters were associated with the Glu-1 loci, and also were found in two regions on chromosome 3B and one region on chromosome 6A, which is one of the novel chromosome regions influencing dough-mixing strength. The two QTL for MPV are located around Wx-B1 on chromosome 4A. QMPT-1D.1, QMPI-1D.1 and Q8MW-1D.1 were stable in different environments and could potentially be used in molecular marker-assisted breeding.
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