Climate change is placing growing pressure on hop production worldwide. In key growing regions, rising temperatures, drought and increasingly unpredictable weather are already affecting both hop yield and quality, threatening supply chains and the flavours hops bring to beer.
To help address these challenges, researchers from Helmholtz Munich, Hopsteiner and Carlsberg Research Laboratory have created the most comprehensive genetic map of hops to date. The study provides new insight into the crop’s genetic complexity and lays the groundwork for breeding hop varieties that are more resilient to climate stress while improving brewing quality, aroma and flavour.
“Challenges like climate change are bigger than any one company,” said Birgitte Skadhauge, Vice President and Head of the Carlsberg Research Laboratory. “By sharing our hop genome research in Nature Communications, we are giving scientists and breeders everywhere tools to protect crops, to innovate, and to help secure the future of beer.”
Decoding the Complex Genetics of Hops
Hops are genetically more complex than their delicate flowers might suggest. The hop genome is large – comparable in size to the human genome – and highly repetitive. Its complexity is further increased by an uncommon reproductive system among flowering plants: male and female flowers grow on separate plants, but only the female plants produce the cones prized by brewers.
In the current study, the researchers generated a high-resolution, chromosome-level of a commercially important hop variety. Like humans, hops carry two versions of each chromosome in every cell, one inherited from each parent. The new reference genome captures both versions in detail, enabling scientists to distinguish between different genetic lineages within the same plant.
This is particularly important because modern hop breeding often combines European and North American genetic backgrounds to improve brewing performance. The new genomic map makes it possible to see how these lineages are organized in the DNA and how they contribute to traits relevant for cultivation, resilience and flavour.
Put simply, the team has created a detailed “DNA roadmap” of hops, showing where important traits are located in the genome and how they are inherited across generations.
“Hops are genetically far more complex than most people realize, and that complexity has limited how quickly we can improve them,” said Ilka Braumann, Head of Hop Development at the Carlsberg Research Laboratory. “By separating the European and North American lineages in the genome, we can now see how different traits come together, giving us a much clearer path to developing better, more resilient hop varieties.”
New Perspectives for Hop Research and Cultivation
The publication of a high‑quality hop genome has implications far beyond a single research group. With these data now available, breeding and research efforts can move from trial‑and‑error approaches to more targeted, knowledge‑based strategies.
That opens the door to:
- Climate-resilient hops: Improved tolerance to heat, drought and changing environmental conditions, helping stabilise yields and protect farmers’ livelihoods.
- New flavours and aromas: A deeper understanding of the genetic basis of flavour‑relevant compounds could enable the development of entirely new sensory profiles.
- Faster innovation: Genomic insight can significantly shorten breeding timelines that previously took more than a decade.
- More sustainable agriculture: Hop varieties that perform reliably with fewer inputs, supporting environmentally responsible production systems.
Together, these advances provide a roadmap for the future of hop breeding – supporting both the long‑term availability of beer and the diversity of flavours enjoyed by consumers.
Original Publication
Kale et al., 2026: Extensive variation between chromosomes of North American andEuropean hop. Nature Communications. DOI: 10.1038/s41467-026-72379-8
