Theoretical and Applied Genetics

, Volume 132, Issue 9, pp 2633–2650 | Cite as

Genetic analysis of a worldwide barley collection for resistance to net form of net blotch disease (Pyrenophora teres f. teres)

  • Fluturë Novakazi
  • Olga Afanasenko
  • Anna Anisimova
  • Gregory J. Platz
  • Rod Snowdon
  • Olga Kovaleva
  • Alexandr Zubkovich
  • Frank OrdonEmail author
Original Article


Key message

A total of 449 barley accessions were phenotyped for Pyrenophora teres f. teres resistance at three locations and in greenhouse trials. Genome-wide association studies identified 254 marker–trait associations corresponding to 15 QTLs.


Net form of net blotch is one of the most important diseases of barley and is present in all barley growing regions. Under optimal conditions, it causes high yield losses of 10–40% and reduces grain quality. The most cost-effective and environmentally friendly way to prevent losses is growing resistant cultivars, and markers linked to effective resistance factors can accelerate the breeding process. Here, 449 barley accessions expressing different levels of resistance comprising landraces and commercial cultivars from the centres of diversity were selected. The set was phenotyped for seedling resistance to three isolates in controlled-environment tests and for adult plant resistance at three field locations (Belarus, Germany and Australia) and genotyped with the 50 k iSelect chip. Genome-wide association studies using 33,818 markers and a compressed mixed linear model to account for population structure and kinship revealed 254 significant marker–trait associations corresponding to 15 distinct QTL regions. Four of these regions were new QTL that were not described in previous studies, while a total of seven regions influenced resistance in both seedlings and adult plants.



This research was supported by the German Research Society (DFG) (OR 72/11-1) and the Russian Foundation for Basic Research (RFBR) (No 15-54-12365 NNIO_a).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.

Supplementary material

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Copyright information

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Authors and Affiliations

  1. 1.Institute for Resistance Research and Stress ToleranceJulius Kuehn-InstituteQuedlinburgGermany
  2. 2.All-Russian Research Institute of Plant ProtectionSaint PetersburgRussia
  3. 3.Queensland Department of Agriculture and FisheriesHermitage Research FacilityWarwickAustralia
  4. 4.Department of Plant Breeding, IFZ Research Centre for Biosystems, Land Use and NutritionJustus Liebig UniversityGiessenGermany
  5. 5.Federal Research Center the N. I. Vavilov All-Russian Institute of Plant Genetic ResourcesSaint PetersburgRussia
  6. 6.Republican Unitary EnterpriseThe Research and Practical Center of the National Academy of Sciences of Belarus for Arable FarmingZhodinoBelarus

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