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Mapping of adult plant resistance to net form of net blotch in three Australian barley populations

Lehmensiek, A. and Platz, G.J. and Mace, E. and Poulsen, D. and Sutherland, M.W. (2007) Mapping of adult plant resistance to net form of net blotch in three Australian barley populations. Australian Journal of Agricultural Research, 58 (12). pp. 1191-1197.

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Article Link(s): http://dx.doi.org/10.1071/AR07141

Publisher URL: http://www.publish.csiro.au

Abstract

Net form of net blotch (NFNB), caused by Pyrenophora teres Drechs. f. teres Smedeg., is a serious disease problem for the barley industry in Australia and other parts of the world. Three doubled haploid barley populations, Alexis/Sloop, WI2875-1/Alexis, and Arapiles/Franklin, were used to identify genes conferring adult plant resistance to NFNB in field trials. Quantitative trait loci (QTLs) identified were specific for adult plant resistance because seedlings of the parental lines were susceptible to the NFNB isolates used in this study. QTLs were identified on chromosomes 2H, 3H, 4H, and 7H in both the Alexis/Sloop and WI2875-1/Alexis populations and on chromosomes 1H, 2H, and 7H in the Arapiles/Franklin population. Using QTLNetwork, epistatic interactions were identified between loci on chromosomes 3H and 6H in the Alexis/Sloop population, between 2H and 4H in the WI2875-1/Alexis population, and between 5H and 7H in the Arapiles/Franklin population. Comparisons with earlier studies of NFNB resistance indicate the pathotype-dependent nature of many resistance QTLs and the importance of establishing an international system of pathotype nomenclature and differential testing.

Item Type:Article
Additional Information:© CSIRO.
Keywords:Barley; net form of net blotch; plant resistance; Pyrenophora teres Drechs. f. teres Smedeg; QTLs; quantitative trait loci.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Science > Biology > Genetics > Quantitative genetics (esp. Quantitative Trait Loci (QTL) articles)
Plant pests and diseases > Individual or types of plants or trees > Barley
Deposited On:28 Apr 2009 03:04
Last Modified:28 Jun 2011 00:13

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