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

Dreiseitl, A. and 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(s): http://dx.doi.org/10.1007/s13313-013-0227-x

Abstract

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
Deposited On:15 Oct 2013 05:08
Last Modified:08 Aug 2017 14:45

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