Variety study of selected forms of golden currant (Ribes aureum Pursh.) bred by LRIHS in conditions of Altai Ob region

The purpose of the study is to conduct a comprehensive economic and biological assessment of selected forms of golden currant in the area of variety study for 2020-2022. Tasks: to study the phenological features of selected forms; to evaluate the yield and weight of berries; to take into account the components of productivity. The objects of study are 10 selected forms of locally selected golden currant (parental forms Levushka, Sibirskoe solnyshko, Otrada, 3593-98-12). The control variety is Levushka. Year of planting is 2018, autumn, scheme - 4 × 1 m. Productivity (by eye) was estimated in 3 repetitions. The weather conditions during the study period contributed to the passage of phenophases at the usual time for the Altai Ob Region and the preparation of plants for overwintering. Accumulation of the sum of active temperatures for the full ripening of berries in 2021 and 2022 took place on similar dates. The yield in 2021 was 1.7 (1-06-29)-3.8 (4197-06-2) kg/plant, in 2022 - 2.4 (1-06-29)-5.0 kg/bush (4197- 06-1, 4197-06-2). The average weight of berries varied from 1.0 to 1.9 g, the maximum - from 1.3 to 4.0 g. Most of the selected forms were characterized by larger berries than the control variety. The conditions of the summer months were favorable for the development and spread of leaf gall aphids (Capitophorus ribis L). The degree of damage to selected forms by the pest varied from 0.3 to 3.0 points. A weak degree (up to 2.0 points) was noted in varieties 1-06-29, 4190-06-6, 4190-06-3, 4190-06-13, 4190-06-17, 4197-06-1,4198- 06-14, medium (up to 3.0 points) - 4189-06-9, 4198-06-1, 4197-06-2, Levushka. Accounting for productivity components showed a significant variation in the number of annual shoots (8.0-21.0 pieces), nodes (8.7-18.1) and berries in the brush (3.0-7.3 pieces). Selective forms 4190-06-6, 4190-06-13, 4197- 06-1, 4197-06-2 were selected according to the complex of economic and biological indicators.