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Genetic diversity of Aegilops tauschii accessions and its relationship with tetraploid and hexaploid wheat using retrotransposon-based molecular markers
Cereal Research Communications ( IF 1.6 ) Pub Date : 2021-05-05 , DOI: 10.1007/s42976-021-00167-9
Samira Safiyar , Ali Aalami , Babak Abdollahi Mandoulakani , Babak Rabiei , Mojtaba Kordrostami

Aegilops is known as the ancestor species of wheat and has a major role in the evolution of wheat. Considering the importance of this species and the fact that Iran is the center of the distribution, fifteen IRAP and REMAP markers were used to evaluate the genetic diversity of Ae. tauschii accessions from different regions of Iran and its relationship with Triticum durum and Triticum aestivum. A high level of polymorphism (99%) was observed for both retrotransposon markers. Polymorphism information content, the effective number of alleles (Ne), Nei’s genetic diversity (H), and Shannon’s information index (I) for IRAP markers were more than REMAP markers. The most genetic diversity was detected in Ae. tauschii accessions. The cluster analysis separated the accessions into three distinct groups. Ae. tauschii accessions from Golestan province grouped in the same cluster with T. aestivum genotypes, indicating that these accessions are probably more like to the progenitor of the bread wheat D genome. Our results revealed that retrotransposon-based molecular markers could be used as the appropriate and reliable marker system to evaluate genetic diversity and relationship in Triticum and Aegilops accessions.



中文翻译:

基于反转录转座子的分子标记Taegchii山羊草的遗传多样性及其与四倍体和六倍体小麦的关系

埃格洛普斯(Aegilops)被称为小麦的祖先种类,在小麦的进化中起着重要作用。考虑到该物种的重要性以及伊朗是分布的中心这一事实,使用了15个IRAP和REMAP标记来评估Ae的遗传多样性伊朗不同地区的tauschii种质及其与硬粒小麦普通小麦的关系。两种反转录转座子标记均观察到高水平的多态性(99%)。IRAP标记的多态性信息含量,等位基因的有效数目(Ne),Nei的遗传多样性(H)和Shannon的信息指数(I)均大于REMAP标记。在Ae中发现了最多的遗传多样性。陶西加入。聚类分析将种质分为三个不同的组。e 来自Golestan省的tauschii品种与普通小麦T.基因型归为同一类,表明这些品种可能更像面包小麦D基因组的祖先。我们的研究结果表明,基于反转录转座子分子标记可作为适当的和可靠的标记系统,以评估遗传多样性和关系,小麦山羊种质。

更新日期:2021-05-05
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