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Chromosomal features revealed by comparison of genetic maps of Glycine max and Glycine soja

机译：甘氨酸最大和甘氨酸Soja的遗传图谱比较呈染色体特征

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Recombination is a crucial component of evolution and breeding. New combinations of variation on chromosomes are shaped by recombination. Recombination is also involved in chromosomal rearrangements. However, recombination rates vary tremendously among chromosome segments. Genome-wide genetic maps are one of the best tools to study variation of recombination. Here, we describe high density genetic maps of Glycine max and Glycine soja constructed from four segregating populations. The maps were used to identify chromosomal rearrangements and find the highly predictable pattern of cross-overs on the broad scale in soybean. Markers on these genetic maps were used to evaluate assembly quality of the current soybean reference genome sequence. We find a strong inversion candidate larger than 3?Mb based on patterns of cross-overs. We also identify quantitative trait loci (QTL) that control number of cross-overs. This study provides fundamental insights relevant to practical strategy for breeding programs and for pan-genome researches.
机译：重组是进化和育种的关键组分。染色体的新组合通过重组成型。重组也参与染色体重排。然而，重组率在染色体区段之间的巨大变化。基因组族遗传图是研究重组变异的最佳工具之一。在这里，我们描述由四个隔离种群构成的甘氨酸Max和甘氨酸Soja的高密度遗传图谱。地图用于识别染色体重排，并在大豆中的广泛规模上找到高度可预测的交叉模式。这些遗传图上的标记用于评估当前大豆参考基因组序列的组装质量。我们发现基于交叉模式的3个MB的强大反演候选者。我们还识别控制交叉数量的定量特质基因座（QTL）。本研究提供了与育种计划和泛基因组研究的实际战略相关的基本洞察。

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