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Validation of a new spot form of net blotch differential set and evidence for hybridisation between the spot and net forms of net blotch in Australia

McLean, M. S. and Martin, A. and Gupta, S. and Sutherland, M. W. and Hollaway, G. J. and Platz, G. J. (2014) Validation of a new spot form of net blotch differential set and evidence for hybridisation between the spot and net forms of net blotch in Australia. Australasian Plant Pathology, 43 (3). p. 223. ISSN 0815-3191

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Article Link(s): http://dx.doi.org/10.1007/s13313-014-0285-8

Abstract

A recently developed spot form of blotch differential set of 16 barley lines was tested for reaction response to 60 Pyrenophora teres f. maculata isolates from geographically disperse barley crops of Australia. Twelve barley lines (Arimont, Barque, Chebec, CI5286, CI5791, CI9214, CII6150, Dairokkaku, Esperance Orge 289, Galleon, Keel, Skiff, Torrens and TR250) provided differential response between the isolates. The susceptible controls Gairdner and Kombar provided indication of isolate virulence or avirulence. Abundant pathogenic diversity was revealed with 33 designated pathotypes, some of which related to geographic region. AFLP analysis also revealed abundant diversity with each of the isolates representing a unique genotype and one isolate that contained both AFLP bands unique to P. teres f. maculata and P. teres f. teres, the cause of spot form and net form of net blotch respectively, suggesting that sexual recombination between the net form and spot form isolates may have occurred naturally in the field.

Item Type:Article
Business groups:Crop and Food Science
Subjects:Plant culture > Field crops > Barley
Science > Botany > Genetics
Plant pests and diseases > Plant pathology
Deposited On:24 Feb 2015 01:08
Last Modified:24 Feb 2015 01:08

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