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    A global barley panel revealing genomic signatures of breeding in modern Australian cultivars.

    82692.pdf (17.49Mb)
    Access Status
    Open access
    Authors
    Hill, Camilla Beate
    Angessa, Tefera Tolera
    Zhang, Xiao-Qi
    Chen, Kefei
    Zhou, Gaofeng
    Tan, Cong
    Wang, Penghao
    Westcott, Sharon
    Li, Chengdao
    Date
    2021
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Hill, C.B. and Angessa, T.T. and Zhang, X.-Q. and Chen, K. and Zhou, G. and Tan, C. and Wang, P. et al. 2021. A global barley panel revealing genomic signatures of breeding in modern Australian cultivars. Plant J.
    Source Title
    Plant J
    DOI
    10.1111/tpj.15173
    ISSN
    0960-7412
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Remarks

    This is the peer reviewed version of the following article: Hill, C.B., Angessa, T.T., Zhang, X.‐Q., Chen, K., Zhou, G., Tan, C., Wang, P., Westcott, S. and Li, C. (2021), A global barley panel revealing genomic signatures of breeding in modern Australian cultivars, which has been published in final form at https://doi.org/10.1111/tpj.15173. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

    URI
    http://hdl.handle.net/20.500.11937/82628
    Collection
    • Curtin Research Publications
    Abstract

    The future of plant cultivar improvement lies in the evaluation of genetic resources from currently available germplasm. Today's gene pool of crop genetic diversity has been shaped during domestication and more recently by breeding. Recent efforts in plant breeding have been aimed at developing new and improved varieties from poorly adapted crops to suit local environments. However, the impact of these breeding efforts is poorly understood. Here, we assess the contributions of both historical and recent breeding efforts to local adaptation and crop improvement in a global barley panel by analysing the distribution of genetic variants with respect to geographic region or historical breeding category. By tracing the impact breeding had on the genetic diversity of barley released in Australia, where the history of barley production is relatively young, we identify 69 candidate regions within 922 genes that were under selection pressure. We also show that modern Australian barley varieties exhibit 12% higher genetic diversity than historical cultivars. Finally, field-trialling and phenotyping for agriculturally relevant traits across a diverse range of Australian environments suggests that genomic regions under strong breeding selection and their candidate genes are closely associated with key agronomic traits. In conclusion, our combined dataset and germplasm collection provide a rich source of genetic diversity that can be applied to understanding and improving environmental adaptation and enhanced yields.

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