Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
Crown rust, which is caused by Puccinia coronata fungus, is one of the most common fungal diseases occurring in oat in the Polish climatic conditions. More than 100 genes determining resistance to this pathogen have been identified in oat so far, but they are broken down by new Puccinia coronata populations in a short time. The aim of the work was to assess the effectiveness of genes which are responsible for resistance to Puccinia coronata isolates, collected in central and south-eastern Poland in 2010–2011. In the studies, 31 reference lines with single resistance genes to crown rust were used. The analyses were performed using host-pathogen tests, based on 6 Puccinia coronata isolates. The crown rust isolates from diverse oat-growing regions were clearly distinguished, differing in the frequency of virulence for 21 of the 31 reference lines. The most effective genes in the seedling stage were Pc14, Pc39, Pc51, Pc52, Pc53, Pc57, Pc60, Pc68, Pc71 and Pc91.
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