1 ALLELE SHIFTS IN IMPROVED WHEAT

Selection is the deliberate act of increasing the frequency of favorable alleles in a genome thereby affecting the phenotypic performance of the organism. Breeding for high yielding and disease resistant wheat cultivars has a long history in the United States. Ayalew et al. (https://doi.org/10.1002/tpg2.20032) identified significant selection signatures caused by several decades of wheat breeding in the Great Plains. The major selection signatures identified were connected to a translocation segment inherited from goatgrass (Aegilops ventricosa), a wild relative of wheat. Introducing genetic variants from distant relatives provides lasting solutions to some biotic and abiotic stresses.

中文翻译：

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研究要点，植物基因组，第13卷，第3期

1个等位基因改良小麦

选择是故意增加基因组中有利等位基因频率，从而影响生物体表型表现的行为。在美国，高产和抗病小麦品种的育种历史悠久。Ayalew等。（https://doi.org/10.1002/tpg2.20032）确定了由大平原数十年小麦育种引起的重要选择特征。鉴定出的主要选择标记与从山羊草（Aegilops ventricosa）（小麦的野生近缘种）遗传的易位区段相关。从远亲引进遗传变异为某些生物和非生物胁迫提供了持久的解决方案。