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Pathogenicity of Blumeria graminis f. sp. hordei in Australia in 2010 and 2011

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Dreiseitl, A., Fowler, R. A. and Platz, G. J. (2013) Pathogenicity of Blumeria graminis f. sp. hordei in Australia in 2010 and 2011. Australasian Plant Pathology . pp. 1-9. ISSN 0815-3191

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Article Link: http://dx.doi.org/10.1007/s13313-013-0227-x


A survey of the Australian barley powdery mildew (Blumeria graminis f. sp. hordei) population was conducted in 2010 and 2011. Three hundred and sixty-two isolates of the pathogen were collected from 18 locations across all six states of Australia. Thirty-two barley differentials were used and 11 genotypes were able to differentiate the population with virulence frequencies varying from 14.5 % to 96.6 %. Twenty-seven pathotypes were detected. Fifteen of them were found in both years and they represented 92.0 % of all isolates examined. No virulence was found on a further 16 major genes for resistance (Mla1, Mla3, Mla6, Mla7, Mla9, Mla10, Mla12, Mla13, Mla23, MlaN81, Mlh, MlLa, Mlp1, Ml(IM9), Ml(St) and mlo) indicating a relatively simple population and the ready availability of diverse sources of resistance. This paper reports the powdery mildew virulences present in Australia, provides intelligence for future resistance breeding and sets a basis for further virulence studies.

Item Type:Article
Business groups:Crop and Food Science
Keywords:Blumeria graminis Pathotype Virulence Powdery mildew Barley Survey
Subjects:Plant culture > Field crops > Barley
Plant pests and diseases > Individual or types of plants or trees > Barley
Live Archive:15 Oct 2013 05:08
Last Modified:03 Sep 2021 16:49

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