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大豆科学  2009 

大豆脂肪酸组分相关QTL元分析

DOI: 10.11861/j.issn.1000-9841.2009.05.0774, PP. 774-780

Keywords: 大豆,脂肪酸,QTL,元分析,定位

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Abstract:

大豆油中脂肪酸的种类与含量是衡量其品质的主要指标。目前,对大豆脂肪酸组分相关的QTL研究较多,然而这些结果之间由于作图群体、分析方法以及环境条件的差异造成了QTL定位的区间过大或定位区间重叠等问题。通过搜集已报道的与大豆脂肪酸含量相关的83个QTL,提取相对有效且可靠的QTL标记信息,利用元分析软件BioMercator2.1将这些QTL映射到大豆公共遗传连锁图谱Soymap2上,构建了一张大豆脂肪酸组分相关QTL一致性图谱。并利用QTL的95%的置信区间来元分析推断“真实”QTL的位置。结果共得到定位在10个连锁群上的19个“真实”QTLs,他们主要分布在A1、B2、D1b、D2、E、G、L这7条连锁群上且成簇分布,明显缩短了其QTL的置信区间。研究结果为大豆脂肪酸组分相关的QTL的精细定位以及脂肪酸组分相关基因挖掘提供了有力的依据。

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