RETRACTED: 3-year results of hop hybrids testing

Abstract

Chuvashia has long been the main hop producer in the Soviet Union. Today, the Tsivilsky district of Chuvashia is the northernmost point of the hop breeding process. To revive this crop in the hop farms of the Chuvash Research Institute of Agriculture, the study of hybrids of common hop (Humulus Lupulus L.), grown from seeds obtained from different combinations of varieties of the hop collection of the Chuvash Research Institute of Agriculture is being carried out. The aim of the work is to breed new high-yielding hop varieties of high quality, adapted to the agroclimatic conditions of Chuvashia. The planting of the selection and control nursery was carried out in 2015. The article presents the results of the research for 2020-2022. As a control, 2 varieties were taken. Standard 1 - Podvyazny, has long been the standard in terms of yield, quality, and stability. It belongs to the medium-maturing group of varieties. Standard 2 - Fakir, the best variety of the mid-early group from a series of recently developed varieties. Plants grown from seeds obtained from female plants of Saxon, Marinka, Late Cluster, Porphyry 16 and Plunscher were studied. Male plants of different varieties were used as pollinators by random pollination or by pollen mixture using isolators. A complex of economically useful traits was investigated. The main ones, yield and alpha acid content in cones, are given in the article. Depending on agroclimatic conditions during the years of research, separate hybrid combinations were assigned. Only two combinations - Porfir 16 × SR - 25.3 kg/ha, which showed itself as a medium-ripening variety with an alpha acid content of 5.2% and Saxon × SR - 33 kg/ha - showed itself as a medium-early variety with an alpha acid content of 6.1%. Several combinations also outperformed Podvyazny in some years, either in terms of yield or quality, but there was no consistent outperformance in all three years.