A comparative assessment of a remontant and common raspberries biochemical composition is given. The biochemical composition of a remontant raspberries cultivated in Cisbaikalia corresponds to the minimum physiological human need for biologically active substances. The content of sugars, vitamins (C, A, B1, B2, E and PP) and microelements has been studied. It was found that the frozen berry contains a sufficient amount of vitamin C, sugars and trace elements for daily consumption. The dietary value of raspberries is noted, due to the predominant accumulation of fructose and glucose. The minimum sugar content of berries in the Eurasia variety. A variety with a high content of vitamin C and sugars has been identified, it is Rubinovor ozherelie. The Zharptitsa and Rubinovoe ozherelie varieties are sources of iron, manganese, zinc and copper, and Penguin, Hercules, Orange miracle, Bellflower, form 16-136-6 are calcium. The Rubinovoe ozherelie variety contains a lot of sugars, vitamins and micronutrients, and also has a high organoleptic rating.

The purpose of this work was to study biological and economic peculiarities of repair raspberry varieties cultivated in the south-eastern part of Irkutsk region. The research was conducted on the territory of the collection site of SIFIBR SB RAS. The objects of research were 10 varieties and 3 selected forms of repair raspberries of selection of FSBNU "All-Russian Breeding and Technological Institute of Horticulture and Nursery Management". Raspberries were cultivated in annual culture.Biological and economic peculiarities of the object of research on the territory of the forest-steppe zone of the Predbaikal region were studied by the route method. Actual productivity was taken into account by mass of ripe berries on one bush before severe frosts. The research was carried out according to the program and methods of variety study of fruit, berry and nut crops. According to the results of observations a comparative biological and economic assessment of the studied objects by productivity and terms of fruit ripening, peculiarities of bush formation in some varieties was given.

Heightened interest in primocane-fruiting raspberry in the region necessitated a detailed study of this berry crop. The article introduces the research carried out in 2019 on the 0.15 ha collection site of Siberian Institute of Plant Physiology and Biochemistry of the Siberian Branch of the Russian Academy of Sciences (Irkutsk). The research objects were 9 varieties and 3 select forms of primocane-fruiting raspberry of the domestic breeding. Particular attention was paid to the biological and practical features of the research object: early maturity, cropping power, and damage caused by phytopathogenic objects. During the growing season, the varieties bearing fruit in late July – early August and those bearing fruit in the first and second ten-day intervals of September were noted. Large-fruited varieties (fruit mass more than 6 g) and large-fruited forms (fruit mass more than 7 g) were singled out. In the study season, fruiting continued until early October due to weather conditions. That allowed many plants to give maximum yield. The last harvest was on October 7, 2019. However, there were some plants that were only entering the stage of mass bearing at that moment. As a result, more early-maturing forms and varieties with the highest cropping power and resistance to fruit rot during the rainy season were registered among the range of varieties under study. Observations on the spider mite population on the plants were described. The paper describes the conditions for growing and the difficulties encountered during the planting of primocane-fruiting raspberry. The climatic conditions of the study area are described.

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When studying the world and domestic experience of cultivating primocane -fruiting raspberry varieties, the greenhouse crop cultivation method has attracted attention. Cisbaikalia is a territory where the cultivation period for horticultural crops is not long, whereas the need for fresh berries is high. Taking that into consideration, we see the prospect of developing a technology for cultivating primocane-fruiting raspberry varieties in the extended cycle in the Southern Cisbaikalia growing conditions. The present paper introduces the research carried out in 2019-2021 at the experimental site Phytotron of Siberian Institute of Plant Physiology and Biochemistry of the Siberian Branch of the Russian Academy of Sciences (Irkutsk, Russia). The research objects were varieties and selected forms of domestic primocane-fruiting raspberry. For this purpose, the plant productivity was determined, and phenological observations were performed. The research was carried out according to the generally accepted program and methodology for the variety study of fruit, berry and nut crops. The research involved medium and late-ripening varieties with a long fruiting period, such as Oranzhevoye chudo, Zhar ptitsa, Gerakl, Bryanskoye divo, Rubinovoye ozherel’ye, selected form 37-15-4. Plants of the first year of growth, which were in the budding phase at the time of transplantation, were selected. The plant preparing for transplantation was started 4 weeks before. In the first week of September, seedlings were transplanted into 8-10 liter containers. For normal growth and fruiting under new growing conditions, optimal water and temperature conditions were created, the plant feeding was improved. All the plants adapted well to the extended cultivation and entered the fruiting phase. High productivity was observed in Gerakl, Oranzhevoye chudo, and Rubinovoye ozherel’ye.