New fine aroma varieties of hops (Humulus lupulus L.) Saaz Brilliant, Saaz Comfort, Saaz Shine and Mimosa

Jitka Charvátová,Vladimír Nesvadba

doi:10.18832/kp2019.66.320

Jitka Charvátová, Vladimír Nesvadba

Open Access

https://doi.org/10.18832/kp2019.66.320

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Abstract

Four new aroma hop varieties – Saaz Brilliant, Saaz Comfort, Saaz Shine and Mimosa – were registered in the Czech Republic in 2019. All of the new hop varieties have significantly higher yields than the traditional Saaz aroma variety. Saaz Comfort has the significantly highest content of alpha acids (5.59%) whereas Mimosa has the significantly lowest content of alpha acids (1.90%). The Saaz Comfort and Saaz Brilliant varieties show a variability of alpha acid content below 20%. The other hop varieties, Saaz Shine and Mimosa, as well as Saaz, have a variability of alpha acid content above 25%. Mimosa has the significantly highest content of beta acids (6.07%). Mimosa shows the highest average cohumulone content (29.29% rel.) whereas Saaz Comfort has the lowest cohumulone content (18.04% rel.). Saaz Comfort and Saaz Shine have the highest average contents of hop essential oils (0.84% w. and 0.75% w., respectively). The Saaz, Saaz Shine and Saaz Brilliant varieties show the significantly highest farnesene contents (13.47% rel., 12.50% rel. and 12.38% rel., respectively), which are higher than those of Saaz Comfort and Mimosa.

Highlights

The Hop Research Institute in Žatec has 20 hop varieties registered
No statistical difference was determined between other varieties in terms of hop yield
Saaz Comfort has the lowest variability of hop yield (33.39%), whereas Saaz Shine has the highest (43.94%)

Summary

Introduction

The Hop Research Institute in Žatec has 20 hop varieties registered. Associate professor Karel Osvald was the founder of modern methods of hop breeding based on clonal selection in the original regional vegetations. He started applying clonal selection in 1927. His longtime efforts in Czech hop growing resulted in three clones (Fric, 1992), which were named after him (Osvald’s clone 31, Osvald’s clone 72 and Osvald’s clone 114). In 2001, the first Czech bittering hop variety (Agnus) was registered It shows an alpha acid content of 10% (Nesvadba et al, 2002).

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