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Molecular genetic analysis of grain protein content and flour whiteness degree using RILs in common wheat

机译:利用RILs对普通小麦籽粒蛋白质含量和面粉白度进行分子遗传分析

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摘要

Grain protein content (GPC) and flour whiteness degree (FWD) are important qualitative traits in common wheat. Quantitative trait locus (QTL) mapping for GPC and FWD was conducted using a set of 131 recombinant-inbred lines derived from the cross 'Chuan 35050 x Shannong 483' in six environmental conditions. A total of 22 putative QTLs (nine GPC and 13 FWD) were identified on 12 chromosomes with individual QTL explaining 4.5-34.0% phenotypic variation. Nine QTLs (40.9%) were detected in two or more environments. The colocated QTLs were on chromosomes 1B and 4B. Among the QTLs identified for GPC, QGpc.sdau-4A from the parent Shannong 483 represented some important favourable QTL alleles. QGpc.sdau-2A.1 and QFwd.sdau-2A.1 had a significant association with both GPC and FWD. The markers detected on top of QTL regions could be potential targets for marker-assisted selection.
机译:籽粒蛋白质含量(GPC)和面粉白度(FWD)是普通小麦重要的定性性状。 GPC和FWD的定量性状基因座(QTL)定位是在6个环境条件下,使用131个重组自交系(衍生自杂交'Chuan 35050 x Shannong 483')进行的。在12条染色体上共鉴定出22个推定的QTL(9个GPC和13个FWD),每个QTL解释了表型变异4.5-34.0%。在两个或更多环境中检测到九个QTL(占40.9%)。并置的QTL位于1B和4B号染色体上。在鉴定为GPC的QTL中,来自父系Shannong 483的QGpc.sdau-4A代表了一些重要的有利QTL等位基因。 QGpc.sdau-2A.1和QFwd.sdau-2A.1与GPC和FWD都有显着关联。在QTL区域顶部检测到的标记可能是标记辅助选择的潜在目标。

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