Markers for seedling and adult plant crown rot resistance in four partially resistant bread wheat sources

Martin, A. and Bovill, W. D. and Percy, C. D. and Herde, D. and Fletcher, S. and Kelly, A. and Neate, S. M. and Sutherland, M. W. (2015) Markers for seedling and adult plant crown rot resistance in four partially resistant bread wheat sources. Theoretical and Applied Genetics, 128 (3). pp. 377-385. ISSN 0040-5752

Abstract

Crown rot, caused by Fusarium pseudograminearum,is an important disease of wheat in many wheatgrowing regions globally. Complete resistance to infection by F. pseudograminearum has not been observed in a wheat host, but germplasm with partial resistance to this pathogen has been identified. The partially resistant wheat hexaploid germplasm sources 2-49, Sunco, IRN497 and CPI133817 were investigated in both seedling and adult plant field trials to identify markers associated with the resistance which could be used in marker-assisted selection programs. Thirteen different quantitative trait loci (QTL) conditioning crown rot resistance were identified in the four different sources. Some QTL were only observed in seedling trials whereas others appeared to be adult plant specific. For example while the QTL on chromosomes 1AS, 1BS, and 4BS contributed by 2-49 and on 2BS contributed by Sunco were detected in both seedling and field trials, the QTL on 1DL present in 2-49 and the QTL on 3BL in IRN497 were only detected in seedling trials. Genetic correlations between field trials of the same population were strong,as were correlations between seedling trials of the same population. Low to moderate correlations were observed between seedling and field trials. Flanking markers, most of which are less than 10 cM apart, have now been identified for each of the regions associated with crown rot resistance.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 15 Feb 2016 02:09
Last Modified: 15 Mar 2018 05:22
Uncontrolled Keywords: crown rot; wheat; resistance
Fields of Research : 06 Biological Sciences > 0604 Genetics > 060412 Quantitative Genetics (incl. Disease and Trait Mapping Genetics)
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820507 Wheat
Identification Number or DOI: 10.1007/s00122-014-2437-1
URI: http://eprints.usq.edu.au/id/eprint/27894

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