Journal article

Discovery and fine mapping of Rph28: a new gene conferring resistance to Puccinia hordei from wild barley

M Mehnaz, P Dracatos, A Pham, T March, A Maurer, K Pillen, K Forrest, T Kulkarni, M Pourkheirandish, RF Park, D Singh



KEY MESSAGE: A new gene Rph28 conferring resistance to barley leaf rust was discovered and fine-mapped on chromosome 5H from wild barley. Leaf rust is a highly destructive disease of barley caused by the fungal pathogen Puccinia hordei. Genetic resistance is considered to be the most effective, economical and eco-friendly approach to minimize losses caused by this disease. A study was undertaken to characterize and fine map a seedling resistance gene identified in a Hordeum vulgare ssp. spontaneum-derived barley line, HEB-04-101, that is broadly effective against a diverse set of Australian P. hordei pathotypes. Genetic analysis of an F3 population derived from a cross between HEB-04-101 and..

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Funding Acknowledgements

This research was partially supported by the Grain Research Development Corporation (GRDC). Authors would also like to thank Mr Matthew Williams, Mr Gary Standen and Ms Bethany Clark for their technical support.