Characteristic of oat genotypes in terms of the resistance to Puccinia coronata and Blumeria graminis f. sp. avenae
Grzegorz Czajowski
g.czajowski@ihar.edu.plZakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków (Poland)
Katarzyna Karska
Zakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków (Poland)
Anna Strzembicka
Zakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków (Poland)
Abstract
The resistance to infections by Puccinia coronata and Blumeria graminis f. sp. avenae was studied in 250 common and 47 naked grain oat genotypes in the years 2010–2013. Studies were carried out in greenhouse at the seedling stage and at the adult plant stage in Grodkowice and Kopaszewo by applying artificial inoculation with urediniospores of P. coronata. In the third location Strzelce, genotypes were tested under field conditions with natural inoculum of the pathogen. In the case of B. graminis f. sp. avenae the studies were carried out in all locations under field conditions and natural infection. The studies have shown differences in reaction to crown rust infection in respect to plant stage, location and year of the experiment. All genotypes were susceptible to B. graminis f. sp. avenae at the seedling stage. Powdery mildew has occurred every year under field conditions in Strzelce, but only over two years in Kopaszewo location. The study allowed to select 20 common oat genotypes resistant to crown rust under field conditions and among them 17 were resistant at seedling stage. Among the naked grain oats, six were resistant to crown rust under field conditions, and four of them were resistant at the seedling stage. Resistance to powdery mildew was recorded for 188 common and 38 naked grain oat genotypes. Resistance to both diseases was observed for 16 common and 4 naked grain oat genotypes. These genotypes can be used as sources of resistance to P. coronata and B. graminis f. sp. avenae in breeding programs.
Keywords:
Blumeria graminis f. sp. avenae, breeding materials, common oat, naked grain oat, Puccinia coronata, resistanceReferences
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Authors
Grzegorz Czajowskig.czajowski@ihar.edu.pl
Zakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków Poland
Authors
Katarzyna KarskaZakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków Poland
Authors
Anna StrzembickaZakład Roślin Zbożowych, Instytut Hodowli i Aklimatyzacji Roślin — PIB, Kraków Poland
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