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Spot Form of Net Blotch Resistance in a Diverse Set of Barley Lines in Australia and Canada.

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McLean, M.S., Howlett, B.J., Turkington, T.K., Platz, G.J. and Hollaway, G.J. (2012) Spot Form of Net Blotch Resistance in a Diverse Set of Barley Lines in Australia and Canada. Plant Disease, 96 (4). pp. 569-576.


Article Link: http://dx.doi.org/10.1094/PDIS-06-11-0477


The responses of 95 barley lines and cultivars to spot form of net blotch (SFNB) caused by Pyrenophora teres f. maculata were analyzed as seedlings and adults in Australia and Canada. Cluster analyses revealed complex reaction responses. Only 2 lines (Esperance Orge 289 and TR3189) were resistant to all isolates at the seedling stage, whereas 15 lines and cultivars (81-82/033, Arimont, BYDV-018, CBSS97M00855T-B2-M1-Y1-M2-Y-1M-0Y, C19776, Keel, Sloop, Torrens, TR326, VB0111, Yarra, VB0229, WI-2477, WI2553, and Wisconsin Pedigree) were resistant toward the two Canadian isolates and mixture of Australian isolates at the adult stages. In Australian field experiments, the effectiveness of SFNB resistance in three barley cultivars (Barque. Cowabbie, and Schooner) and one breeding line (VB9104) with a different source of resistance was tested. Barque, which possessed a resistance gene that provided complete resistance to SFNB, was the most effective and showed no effect on grain yield or quality in the presence of inoculum. Generally, cultivars with seedling or adult resistance had less disease and better grain quality than the susceptible control. Dash, but they were not as effective as Barque. A preliminary differential set of 19 barley lines and cultivars for P teres I. maculata is proposed.

Item Type:Article
Additional Information:© 2012 The American Phytopathological Society.
Keywords:Teres-f-maculata; pyrenophora-teres; pathogenic variation; virulence; identification; barley; markers; genes; yield.
Subjects:Plant pests and diseases > Individual or types of plants or trees > Barley
Science > Botany > Genetics
Live Archive:04 Jun 2012 03:19
Last Modified:03 Sep 2021 16:44

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