Identification of new sources of resistance to powdery mildew in oat |
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| Authors: | Sylwia Magdalena Okoń Maria Chrz?stek Krzysztof Kowalczyk Aneta Koroluk |
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| Institution: | 1. Institute of Plant Genetics, Breeding and Biotechnology, University of Life Science in Lublin, Lublin, Poland
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| Abstract: | Powdery mildew caused by Blumeria graminis DC. f. sp. avenae Em. Marchal. is a deleterious foliar disease of common oat which occurs in many parts of the world. Resistance existing in oat cultivars is broken down by new races of this pathogen and because of this fact there is necessity to look for new and effective sources of resistance to powdery mildew in oat. To identify new potential resistance sources to powdery mildew, a total of 67 oat genotypes from five different species Avena sterilis, A. fatua, A. sativa, A. maroccana and A. murphyi and 20 powdery mildew isolates were investigated for disease reactions. Among tested oat accessions the highest level of resistance was associated with A. maroccana genotypes. Genotypes belonging to species of A. murphi and A. sterilis also showed a good level of resistance. Identified genotypes could be used in oat breeding programmes to improve levels of resistance to powdery mildew. |
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