Czech J. Genet. Plant Breed., 2020, 56(4):165-169 | DOI: 10.17221/119/2019-CJGPB

Molecular screening of domestic apple cultivars for scab resistance genes in GreeceShort Communication

Lefkothea Karapetsi1, Irini Nianiou-Obeidat2, Antonios Zambounis3, Maslin Osathanunkul4,5, Panagiotis Madesis ORCID...*,1,6
1 Laboratory of Molecular Biology of Plants, School of Agricultural Sciences, University of Thessaly, Thessaly, Greece
2 Laboratory of Genetics and Plant Breeding, School of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, Thessaloniki, Greece
3 Department of Deciduous Fruit Trees, Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization DEMETER, Naoussa, Greece
4 Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
5 Center of Excellence in Bioresources for Agriculture, Industry and Medicine Chiang Mai University, Chiang Mai, Thailand
6 Institute of Applied Biosciences (INAB), Centre for Research and Technology - Hellas (CERTH), Thessaloniki, Greece

Apple scab caused by Venturia inaequalis has the most destructive effects among other phytopathogens in apple crops all over the world. The integration of resistance genes from local and domestic cultivars is a prerequisite for the efficient control of this disease and is a main target in efficient breeding approaches. Across Greece, many domestic apple cultivars are reported without deep knowledge about the presence and diversity of scab resistance genes. In this study, the presence of five resistance genes (Rvi2, Rvi4, Rvi6, Rvi8 and Rvi11) was evaluated across twenty local and domestic apple genotypes, employing twelve molecular markers closely linked to known apple scab resistance loci. Significant differences and polymorphisms among the tested cultivars were detected suggesting that some of them carry a sufficient number of resistance genes. This observed genetic diversity could be exploited in ongoing breeding approaches as a natural source of polygenic resistance against apple scab.

Keywords: apple scab; disease resistance; marker-assisted selection; Venturia inaequalis

Published: December 31, 2020  Show citation

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Karapetsi L, Nianiou-Obeidat I, Zambounis A, Osathanunkul M, Madesis P. Molecular screening of domestic apple cultivars for scab resistance genes in Greece. Czech J. Genet. Plant Breed. 2020;56(4):165-169. doi: 10.17221/119/2019-CJGPB.
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