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The analysis of environmental plasticity and stability made it possible to identify adaptable gooseberry cultivars: ‘Avangard’ (CA = 1.77), ‘Vladil’ (CA = 1.58), ‘Grinchel’ (CA = 1.24), ‘Kovcheg’ (CA = 1.13) and ‘Arlekin’ (CA = 1.01). Cv. ‘Grinchel’, submitted for state trials in 2020, is an intensive-type cultivar (bi = 1.49), cvs. ‘Arlekin’ (bi = 1.03; Si2 = 4.1) and ‘Vladil’ (bi =1.03; Si2 = 1.0) are environmentally plastic and stable, while cvs. ‘Avangard’ (bi = 0.51) and ‘Kovcheg’ (bi = 0.53) belong to the neutral type. The advantages of these cultivars are their high productivity, large fruit size, dessert flavor, high winter hardiness, low thorniness, and increased resistance to American gooseberry mildew. High productivity in years with favorable and satisfactory growing conditions can be provided by the intensive-type cultivars ‘Stanichny’ (bi = 1.55) and ‘Kooperator’ (bi = 1.35) as well as the plastic but insufficiently stable cv. ‘Uralsky Izumrud’ (bi = 1.03; Si2= 5.3).

The aim of the study was to assess black currant cultivars for yield, environmental plasticity and stability in Chelyabinsk Province. We identified adaptable black currant cvs. ‘Seyanets Druzhnoy’ (4.43 t/ha; AQ = 1.54), ‘Polar’ (3.59 t/ha; 1.38), ‘Venera’ (4.48 t/ha; 1.35), ‘Zhemchuzhina’ (4.49 t/ha; 1.34), ‘Sudarushka’ (4.43 t/ha; 1.30), ‘Bolero’ (3.42 t/ha; 1.20), ‘Gera’ (3.97 t/ha; 1.16), ‘Mortti’ (3.46 t/ha; 1.06), ‘Podarok Ilyinoy’ (3.89 t/ha; 1.03), ‘Selva’ (3.21 t/ha; 1.02) and ‘Mayak’ (3.54 t/ha; 1.01). The most interesting are intensive-type cultivars, capable of significantly increasing their productivity with the improved growing conditions. Intensive-type cultivars developed in Chelyabinsk are cvs. ‘Podarok Ilyinoy’, ‘Sudarushka’, ‘Zhemchuzhina’, ‘Gera’, ‘Mayak’ and ‘Venera’ (bi = 1.70, 1.68, 1.52, 1.46, 1.40, and 1.28, respectively).The locally developed cv. ‘Seyanets Druzhnoy’, environmentally plastic but insufficiently stable (bi = 1.17; Si2 = 6.1), exceeded in its average yield the environmentally plastic and stable cvs. ‘Selva’ (bi = 0.77; Si2 = 0.7) and ‘Mortti’ (bi = 0.93; Si2 = 1.1). Cv. ‘Bolero’ developed by the Vavilov Institute (VIR) and the Swedish cv. ‘Polar’ are neutral, i.e., they weakly respond to changes in cultivation conditions. High yields were recorded for cvs. ‘Zhemchuzhina, ‘Venera’, ‘Sudarushka’, ‘Seyanets Druzhnoy’, ‘Gera’, ‘Podarok Ilyinoy’, ‘Polar’, ‘Mayak’, ‘Mortti’ and ‘Bolero’.The yield of the following cultivars was at the average level for the experiment: ‘Rusalka’ (bi = 1.50), ‘Orloviya’ (bi = 1.56), ‘Pigmey’ (bi = 1.30), plus the yield (3.36 to 3.25 t/ha) of environmentally stable cvs. ‘Legenda’ (bi = 1.24; Si2 = 0.3), ‘Kama’ (bi = 1.00; Si2 = 0.8), and ‘Dochka’ (bi = 1.15; Si2 = 0.5). Cvs. ‘Zem Zarin’ (1.79 t/ha), ‘Chernecha’ (1.82 t/ha), ‘Zorya Galitskaya’‚ (2.18 t/ha), ‘Sibilla’ (2.37 t/ha), ‘Krasa Lvova’ (2.52 t/ha) and ‘Shakhalevskaya’ (2.84 t/ha) demonstrated yield levels significantly lower than the average.

The aim of the research was to study steppe cherry cultivars of various environmental origin in the context of their productivity, environmental plasticity and stability in the environments of Chelyabinsk Province. Evaluation of the studied set of cultivars helped to identify adaptable steppe cherries: ‘Izobilnaya’ (4.39 t/ha; KA = 1.54), ‘Shchedraya’ (4.42 t/ha; KA = 1.37), ‘Galimovka’ (3.83 t/ha; KA = 1,36), ‘Mayak’ (4.04 t/ha; KA = 1.30), ‘Ashinskaya’’ (t/ha 3.42; KA = 1.28) and ‘Mechta Zauralya’ (3.29 t/ha; KA = 1.07). The most interesting among them are intensive-type cultivars responding well to improved growing conditions, such as the steppe cherry cultivars developed at Sverdlovsk Horticultural Breeding Station: ‘Shchedraya’ (bi = 1.99), ‘Mechta Zauralya’ (1.85) and ‘Mayak’ (1.47). The Chelyabinsk cultivar ‘Galimovka’, submitted for state trials in 2018, falls under the category of environmentally plastic and stable cultivars (bi = 0.77; Si2 = 0.5), while cv. ‘Ashinskaya’ demonstrated during the tests a neutral genotype, as it poorly responded to changing environmental conditions (bi = 0.32; Si2 = 0.1). A new cultivar, ‘Vita’, with a fairly high yield (3.05 t/ha), developed at Sverdlovsk Horticultural Breeding Station, belongs to the environmentally plastic category (bi = 1.10), but its yield stability proved to be insufficient in the environments of the Southern Urals (Si2 = 2.2).

The use of adaptable fruit and berry cultivars significantly increases the environmental sustainability of horticulture. In 2014–2018, the assortment of plum in the Urals was evaluated using the parameters of productivity, environmental plasticity and stability under the conditions of Chelyabinsk Province. The analysis of environmental plasticity and stability helped to identify adaptable cultivars of Chinese plum (Prúnus salicina L.): ‘Altayskaya yubileynaya’ and ‘Uralskaya zolotistaya’. Plastic plum cultivars included cv. ‘Uralskaya zolotistaya’ (yield: 5.62 t/ha; bi = 1.10; Si2 = 25.7), ‘Uralskaya serebristaya’ (5.53 t/ha; 1.16; 21.3) and ‘Manchzhurskaya krasavitsa’ (5.53 t/ha; 1.21; 33.9); their productivity varied in accordance with changes in environmental conditions. Intensive-type cultivars with high responsiveness to the improvement of growing conditions (bi significantly higher than 1) were cvs. ‘Uvelskaya’ (5.62 t/ha; 1.46; 26.8) and ‘Krasnoselskaya’ (5.04 t/ha; 1.35; 45.7). Cv. ‘Zhemchuzhina Urala’ (4.65 t/ha; 0.05; 22.8) belongs to the cultivars with low plasticity (the bi value close to zero); it is characterized by a weak response to a change in environmental conditions. Cv. ‘Altayskaya yubileynaya’ produces the highest yield (6.16 t/ha) due to its plasticity (bi = 0.91), but has low stability (Si2 = 102.5), while cv. ‘Shershnevskaya’ secures rather high productivity (5.23 tons per hectare) due to high stability (Si2 = 32.7) and medium responsiveness to changes in environmental conditions (bi = 0.75).

Presented here are the results of studying the apricot gene pool at the South Ural Research Institute of Horticulture and Potato Cultivation (YUNIISK) in the context of the most important economically valuable traits. Varieties and forms of apricot have been identified for their high winter hardiness, fruit quality, and maximum adaptability to major biotic and abiotic factors of the environment -traits of great interest for further breeding work.