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Evaluation of resistance to Pseudoperonospora humuli and of the content of alpha acids and hop oils in hops of selected genetic resources of hop Humulus lupulus L

Author

Listed:
  • Markéta Trefilová

    (Department of Hop Protection, Hop Research Institute Co., Ltd., Saaz, Czech Republic
    Department of Plant Protection, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Vladimír Nesvadba

    (Department of Hop Breeding, Hop Research Institute Co., Ltd., Saaz, Czech Republic)

  • Jitka Charvátová

    (Department of Hop Breeding, Hop Research Institute Co., Ltd., Saaz, Czech Republic)

Abstract

Twenty hop genotypes were selected for the evaluation of resistance to primary and secondary Pseudoperonospora humuli infection and of alpha acid and hop oil content in the hops. From the wild hop genotypes, two from Canada and one from Belgium showed resistance. Among the registered hop varieties, the Czech varieties Kazbek and Boomerang were the most resistant. Both wild hop genotypes from Canada showed the highest content of alpha acids among the wild hop entries, namely 4% w/w. The lowest variability of the alpha acid content in the wild hop category was found in two wild hop varieties from the Caucasus, one from Austria and one from Lithuania. The highest content of hop oils was determined in two hop genotypes from Canada and two from Belgium. Wild hop genotypes from the Caucasus have the lowest variability of hop oils among the wild hop entries. Two hop genotypes from Canada and one from Belgium were selected for breeding aimed at drought resistance.

Suggested Citation

  • Markéta Trefilová & Vladimír Nesvadba & Jitka Charvátová, 2022. "Evaluation of resistance to Pseudoperonospora humuli and of the content of alpha acids and hop oils in hops of selected genetic resources of hop Humulus lupulus L," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 58(1), pages 36-42.
    • Handle: RePEc:caa:jnlcjg:v:58:y:2022:i:1:id:70-2021-cjgpb
    DOI: 10.17221/70/2021-CJGPB
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