Use of a global wheat core collection for association analysis of flour and dough quality traits
Use of a global wheat core collection for association analysis of flour and dough quality traits
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DOI：
10.1016/j.jcs.2011.03.004
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发表时间：
2011-07-01
影响因子：
3.8
通讯作者：
Balfourier, F.
中科院分区：
文献类型：
--
作者：
Bordes, J.;Ravel, C.;Balfourier, F.
面粉和面团品质是小麦育种中非常重要的性状，利用连锁分子标记进行小麦面粉和面团品质性状的遗传育种具有重要意义。关联分析允许鉴定与目标性状相关的基因或数量性状基因座（QTL）。这种方法的有效性取决于一个密集的基因型群体的可用性，具有大的遗传变异性的性状的利益。我们的目标是确定与面粉和面团品质性状相关的染色体区域，使用核心收集最大限度地提高遗传多样性和表型变异。研究了DArT、SSR和SNP标记与小麦籽粒蛋白质含量、籽粒硬度、水溶性阿拉伯木聚糖（WEAX）粘度、全麦面粉色泽和面团流变学性状的相关性，在803个标记中，有130个标记与至少一个性状相关，其中20个与WEAX粘度相关，60个与面团品质相关。通过对几个双亲重组自交系的研究，证实了大多数已知的决定小麦品质的染色体区域，并鉴定了一些新的区域。协会被发现为每个性状的研究，表明核心集合是一个有用的工具，QTL关联这些和其他性状的研究。(C)2011爱思唯尔有限公司保留所有权利。
Flour and dough quality are very important breeding traits for wheat (Triticum aestivum L) the selection of which would benefit from linked molecular markers. Association analysis allows the identification of genes or quantitative trait loci (QTL) related to target traits. The effectiveness of this approach depends on the availability of a densely genotyped population with large genetic variability for the traits of interest. Our objective was to identify chromosomal regions associated with flour and dough quality traits using a core collection built by maximizing the genetic diversity and phenotypic variability. We investigated the association of DArT, SSR and SNP markers with grain protein content, grain hardness, water-extractable arabinoxylan (WEAX) viscosity, wholemeal flour color and dough rheology.Out of 803 markers tested, 130 markers spread over the genome were associated with at least one trait, varying from 20 associated with WEAX viscosity to 60 associated with dough quality. Most chromosome regions known to determine wheat quality from the study of several bi-parental recombinant inbred lines were confirmed here and some new regions were identified. Associations were found for each trait studied, demonstrating that the core collection is a useful tool for QTL association mapping of these and other traits of interest. (C) 2011 Elsevier Ltd. All rights reserved.