Abstract
The research aims at the assessment of the introduction of representatives of the Humulus lupulus L. species transferred by the Altai State University to the Chuvash Research Institute of Agriculture – branch of FARC North-East. The objects of research were stem cuttings (rhizomes) of wild forms of common hops, selected during a scientific expedition to the south of Western Siberia and the Altai mountain country in the amount of 16 samples. The results of phenological observations conducted in the adaptation nursery on gray forest heavy loamy soil served as the material for the study. The comprehensive assessment included the determination of resistance to the natural and climatic conditions of the northern Volga region, phenological observations and record of the dynamics of the aboveground mass development, carried out according to generally accepted methods in 2023-2025. Based on the results of the evaluation of 9 expedition samples that overwintered in the conditions of 2022-2023, the ability to growth and development of introduced wild hop samples in the studied soil and climatic conditions was shown. The dynamics of the aboveground mass growth and development was described. According to the above-ground mass growth dynamics three samples were identified as the most promising. They significantly surpassed the standard ‘Podvyazny’ cultivar on the 90th day after germination: in the stem length – AK/Alt/29-1 (by 41.9 cm); in the number of stems – AK/Alt/29-2 (by 0.7 pcs.) and in the leaf surface area – AK/Alt/31-2 (by 342.8 cm2). Their high adaptability to the climatic conditions of the northern Volga region has been established during the years of the research, which makes it possible to recommend these samples as promising genetic sources for inclusion in the collection nursery "World collection of common hops (Humulus lupulus L.)".