Development of diversity array technology (DArT) markers for assessment of population structure and diversity in <i>Aegilops tauschii</i>

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  • Sohail Quahir
    Laboratory of Molecular Breeding, Arid Land Research Center, Tottori University
  • Shehzad Tariq
    Laboratory of Plant Genetics and Breeding Science, Graduate School of Life and Environmental Sciences, University of Tsukuba
  • Kilian Andrezj
    Diversity Array Technology Pty. Ltd.
  • Eltayeb Amin Elsadig
    Laboratory of Molecular Breeding, Arid Land Research Center, Tottori University
  • Tanaka Hiroyuki
    Laboratory of Plant Genetics, Faculty of Agriculture, Tottori University
  • Tsujimoto Hisashi
    Laboratory of Molecular Breeding, Arid Land Research Center, Tottori University

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Other Title
  • Development of diversity array technology (DArT) markers for assessment of population structure and diversity in Aegilops tauschii
  • Development of diversity array technology (DArT) markers for assessment of population structure and diversity in <italic>Aegilops tauschii</italic>

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Abstract

Aegilops tauschii Coss. is the D-genome donor to hexaploid bread wheat (Triticum aestivum) and is the most promising wild species as a genetic resource for wheat breeding. To study the population structure and diversity of 81 Ae. tauschii accessions collected from various regions of its geographical distribution, the genomic representation of these lines were used to develop a diversity array technology (DArT) marker array. This Ae. tauschii array and a previously developed DArT wheat array were used to scan the genomes of the 81 accessions. Out of 7500 markers (5500 wheat and 2000 Ae. tauschii), 4449 were polymorphic (3776 wheat and 673 Ae. tauschii). Phylogenetic and population structure studies revealed that the accessions could be divided into three groups. The two Ae. tauschii subspecies could also be separately clustered, suggesting that the current taxonomy might be valid. DArT markers are effective to detect very small polymorphisms. The information obtained about Ae. tauschii in the current study could be useful for wheat breeding. In addition, the new DArT array from this Ae. tauschii population is expected to be an effective tool for hexaploid wheat studies.<br>

Journal

  • Breeding Science

    Breeding Science 62 (1), 38-45, 2012

    Japanese Society of Breeding

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