A major QTL controlling adult plant resistance for barley leaf rust

C. Li; S. Gupta; X-Q Zhang; S. Westcott; J. Yang; R. Park; G. Platz; R. Loughman; R. Lance

doi:10.1007/978-94-007-4682-4_24

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A major QTL controlling adult plant resistance for barley leaf rust

C. Li, S. Gupta, X-Q Zhang, S. Westcott, J. Yang, R. Park, G. Platz, R. Loughman and R. Lance

Advance in Barley Sciences. Proceedings of 11th International Barley Genetics Symposium, pp.285-300

Springer

2012

DOI: https://doi.org/10.1007/978-94-007-4682-4_24

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Abstract

Race-specific resistance genes (Rph) for leaf rust (Puccinia hordei) are often overcome by new pathotypes with matching virulence. Adult plant resistance (APR) is considered potentially more durable for controlling barley leaf rust. Previous studies established that the cultivar Pompadour carried APR to leaf rust. A doubled haploid population (DH) of 200 lines developed from a cross Pompadour/Stirling, and the parents were phenotyped for leaf rust resistance at five field experimental sites in three agricultural zones in Australia. Using a linkage map of SSR and DArT molecular markers, a major QTL associated with the leaf rust resistance was identified on the short arm of chromosome 5H. This QTL explained between 31% and 86% of the phenotypic variation for the APR at different sites. A PCR-based molecular marker was developed and mapped at 1.6 cM to the APR gene. The present study provides new genetic material and a molecular tool for breeding new varieties with adult plant leaf rust resistance using marker-assisted selection.

Details

Title: A major QTL controlling adult plant resistance for barley leaf rust
Authors/Creators: C. Li (Author/Creator) - Murdoch University
S. Gupta (Author/Creator) - Murdoch University
X-Q Zhang (Author/Creator) - Murdoch University
S. Westcott (Author/Creator) - Department of Agriculture and Food
J. Yang (Author/Creator) - Department of Agriculture and Food
R. Park (Author/Creator) - The University of Sydney
G. Platz (Author/Creator) - Department of Jobs and Small Business
R. Loughman (Author/Creator) - Department of Agriculture and Food
R. Lance (Author/Creator) - Department of Agriculture and Food
Contributors: G. Zhang (Editor)
C. Li (Editor) - Murdoch University
X. Liu (Editor)
Publication Details: Advance in Barley Sciences. Proceedings of 11th International Barley Genetics Symposium, pp.285-300
Publisher: Springer
Identifiers: 991005545007207891
Murdoch Affiliation: State Agricultural Biotechnology Centre
Language: English
Resource Type: Book chapter

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