Quantitative Trait Loci for Resistance to Potato Dry Rot Caused by Fusarium sambucinum

Tuber dry rot is an important disease of potato caused by soil and seed-borne pathogens of the Fusarium genus leading to losses that may reach 60% of the yield. The goal of this work was to study the inheritance of the dry rot resistance in two diploid potato hybrid populations (11–36 and 12–3) with...

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Bibliographic Details
Published in:Agronomy (Basel) 2022-01, Vol.12 (1), p.203
Main Authors: Sobkowiak, Sylwester, Janiszewska, Marta, Stefańczyk, Emil, Wasilewicz-Flis, Iwona, Śliwka, Jadwiga
Format: Article
Language:English
Subjects:
Carbon footprint
Chromosome 1
Chromosomes
Cloning
Cultivars
Diploids
Disease
diversity array technology
Dry rot
Food
Fusarium
Fusarium sambucinum
Gene mapping
Genomes
Laboratories
Mapping
Pathogens
Phenotyping
Plant breeding
Polygenic inheritance
Population
Populations
Potatoes
Quantitative trait loci
Seeds
Solanum tuberosum
tuber rot
Vegetables
wild crop relatives
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Summary:Tuber dry rot is an important disease of potato caused by soil and seed-borne pathogens of the Fusarium genus leading to losses that may reach 60% of the yield. The goal of this work was to study the inheritance of the dry rot resistance in two diploid potato hybrid populations (11–36 and 12–3) with complex pedigrees, including several wild Solanum spp. We used an aggressive isolate of F. sambucinum for phenotyping both progenies, parents, and standard potato cultivars in laboratory tuber tests, in three subsequent years. The QTL for dry rot resistance were mapped by interval mapping on existing genetic maps of both mapping populations. The most important and reproducible QTL for this trait was mapped on chromosome I and additional year- and population-specific QTL were mapped on chromosomes II, VII, IX, XI, and XII, confirming polygenic control of this resistance. This is the first study mapping the loci affecting tuber dry rot resistance in potato genome that can contribute to better understanding of potato-F. sambucinum interaction and to more efficient breeding of resistant potato cultivars.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy12010203