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期 刊 ：植物遗传资源学报 2015年 16卷 4期

关键词：小麦；抗叶锈病基因；遗传分析；QTL位点；分子作图；

Keywords:wheat (Triticum aestivum L.), Leaf rust resistance gene, Genetic analysis, QTL loci, Molecular mapping.,

摘 要 ：中国小麦品种潍麦8号是一个良好的小麦抗叶锈性资源，为了解其中抗叶锈基因在染色体上的位置,对潍麦8号?郑州5389杂交得到的179个F2：3家系进行了抗叶锈病QTL分析。结果表明，在染色体2AS上检测到一个主效的QTL，暂命名为QLr.hbau-2AS。QLr.hbau-2AS由抗病亲本潍麦8号提供，位于SSR标记Xcfd36和Xbarc1138之间，区间长度为2.58cM，2010-2011，2011-2012和2012-2013年度，QLr.hbau-2AS分别解释了25.79%，71.55%和60.72%表型变异。本试验筛选出与QLr.hbau-2AS连锁的13个分子标记，这些分子标记将在今后分子辅助育种中发挥重要作用。

Abstract:Wheat Cultivar “Weimai 8” is a good source of adult plant leaf rust resistance in China. In order to understand the chromosomal position of leaf rust resistance genes, 179 F2:3 families of the cross Weimai 8 and Zhengzhou 5389 (susceptible to leaf rust) were used to map leaf rust QTL. Results showed that there was a major QTL on chromosome 2AS, temporarily named QLr.hbau-2AS. QLr.hbau-2AS provided by the resistant parent Weimai 8, was between SSR markers Xcfd36 and Xbarc1138, interval length was 2.58 cM, in 2010-2011, 2011-2012 and 2012-2013 crop season, explained 25.79%, 71.55% and 60.72% of the phenotypic variation, respectively. This experiment screened 13 molecular markers linked to QLr.hbau-2AS, these molecular markers will play an important role in molecular breeding in the future.

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