Articles
Identification of apple cultivars robust to apple blotch disease
Article number
1412_15
Pages
97 – 102
Language
English
Abstract
Apple blotch disease, caused by the fungus Diplocarpon coronariae, is spreading in apple growing areas of Europe.
Infection results in yield losses and reduces fruit quality.
The cultivation of robust apple cultivars is a sustainable solution to prevent the spread of the disease in apple production and also reduces the need for pesticides.
In this study, 535 apple cultivars from the collection of the German Fruit Genebank (GFG) were evaluated for susceptibility to apple blotch disease.
For this initial assessment, the apple cultivars were tested in the laboratory using detached leaf assays.
Initial results showed differences in the susceptibility between traditional apple cultivars, including cultivars with reduced symptom development.
In addition, a genome-wide association study (GWAS) was conducted using phenotyping data from the detached leave assay and genotyping data generated using a 50K SNP array to identify genomic regions associated with resistance to apple blotch disease.
The GWAS analysis indicated that resistance to apple blotch is polygenic.
Several genomic regions associated with resistance to the disease were identified.
This study provides information on robust apple cultivars and potential targets for future resistance breeding.
Infection results in yield losses and reduces fruit quality.
The cultivation of robust apple cultivars is a sustainable solution to prevent the spread of the disease in apple production and also reduces the need for pesticides.
In this study, 535 apple cultivars from the collection of the German Fruit Genebank (GFG) were evaluated for susceptibility to apple blotch disease.
For this initial assessment, the apple cultivars were tested in the laboratory using detached leaf assays.
Initial results showed differences in the susceptibility between traditional apple cultivars, including cultivars with reduced symptom development.
In addition, a genome-wide association study (GWAS) was conducted using phenotyping data from the detached leave assay and genotyping data generated using a 50K SNP array to identify genomic regions associated with resistance to apple blotch disease.
The GWAS analysis indicated that resistance to apple blotch is polygenic.
Several genomic regions associated with resistance to the disease were identified.
This study provides information on robust apple cultivars and potential targets for future resistance breeding.
Authors
S. Richter, M. Höfer, A. Peil, A. Bohr, S. Buchleither, H. Flachowsky, T. Wöhner
Keywords
apple, Malus, GWAS, resistance, Diplocarpon coronariae, Marssonina coronaria
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