Czech J. Genet. Plant Breed., 2024, 60(2):70-78 | DOI: 10.17221/72/2023-CJGPB

Malting quality molecular markers for barley breedingOriginal Paper

Leona Leišová-Svobodová1*, Vratislav Psota2, Marta Zavřelová3, Martin Kříž4, Pavel Mařík4, Zdeněk Nesvadba1
1 Crop Research Institute, Prague Ruzyně, Czech Republic
2 Research Institute of Brewing and Malting, Brno, Czech Republic
3 Agrotest fyto, s.r.o., Kroměříž, Czech Republic
4 SELGEN, a.s., Sibřina, Czech Republic

Barley is one of the world’s most important crops. Barley is used for both food and feed and is important for the production of malt. Malt quality is a complex function of barley genetics, environmental conditions during barley growth, and the technological aspects of the malting process. Due to the high heritability of more than half of the malting parameters, barley can be bred for malting quality. Marker-assisted selection (MAS) is a good way to speed up the breeding process. In this study, nine molecular markers were used to screen 115 barley varieties and breeding lines over a four-year period. The results were compared with malting quality parameters. Multicomponent correlation analysis showed a good correlation (R = 0.63; P ≤ 0.01) between marker screening results and malting quality parameters. In 93 genotypes (80.9%), agreement was found between molecular marker prediction and malting quality determination. Differences between molecular marker screening and malt quality parameters and possible improvements are discussed. The use of molecular markers in MAS is highly appreciated by barley breeders.

Keywords: Hordeum vulgare L.; malting quality parameters; marker-assisted selection; polymorphism

Received: August 29, 2023; Revised: November 1, 2023; Accepted: November 2, 2023; Prepublished online: January 2, 2024; Published: March 27, 2024  Show citation

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Leišová-Svobodová L, Psota V, Zavřelová M, Kříž M, Mařík P, Nesvadba Z. Malting quality molecular markers for barley breeding. Czech J. Genet. Plant Breed. 2024;60(2):70-78. doi: 10.17221/72/2023-CJGPB.
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