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Quantitative trait locus mapping of floral and related traits using an F2 population of Aquilegia.

机译:利用Aquilegia的F 2 种群对花卉及相关性状的性状进行定量定位。

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摘要

The objective of this study was to determine quantitative trait loci (QTL) underlying ten floral and related traits in Aquilegia. The traits assessed were calyx diameter, corolla diameter, petal length, petal blade length, sepal length, sepal width, spur length, spur width, plant height and flower number. These are important traits for ornamental value and reproductive isolation of Aquilegia. QTL analysis of these traits was conducted using single-marker analysis and composite interval mapping (CIM). We used an F2 population consisting of 148 individuals derived from a cross between the Chinese wild species Aquilegia oxysepala and the cultivar Aquilegia flabellata 'pumila'. Resulting CIM analysis identified 39 QTLs associated with these traits, which were mapped on seven linkage groups. These QTLs could explain 1.22-53.28% of the phenotypic variance. Thirty-one QTLs, which explained more than 10% of the phenotypic variation, were classified as major QTLs. Graphical representations of the QTLs on seven linkage groups were made. Our research provides the potential for future molecular assisted selection breeding programmes and the cloning of target genes through fine mapping.
机译:这项研究的目的是确定Aquilegia的十个花卉和相关性状的定量性状位点(QTL)。评估的性状为花萼直径,花冠直径,花瓣长度,花瓣叶片长度,萼片长度,萼片宽度,骨刺长度,骨刺宽度,植物高度和花数。这些是珍贵的观赏价值和生殖分离的重要特征。使用单标记分析和复合区间映射(CIM)对这些特征进行QTL分析。我们使用了一个F 2 种群,该种群由148个个体组成,这些个体来自中国野生物种Aquilegia oxysepala和栽培品种Aquilegia flabellata'pumila'的杂交。结果CIM分析确定了与这些性状相关的39个QTL,这些QTL被定位在七个连锁群上。这些QTL可以解释表型差异的1.22-53.28%。 31个QTL被解释为主要QTL,其中31个QTL解释了超过10%的表型变异。绘制了七个链接组上的QTL的图形表示。我们的研究为将来的分子辅助选择育种计划和通过精细定位克隆目标基因提供了潜力。

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