Relevance. The climatic conditions of the Primorsky Territory, the determining factors of which are its geographical location at the junction of the continent of Eurasia and the Pacific Ocean, are unique, which determines the main directions of breeding vegetable crops at the Primorskaya Vegetable Experimental Station – branch of the Federal State Budgetary Scientific Institution «Federal Scientific Vegetable Center» (PVES – branch of the FSBSI FSVC). The article provides an overview of the main achievements of the station's scientists' long-term work on tomato breeding for open ground and identifies the main tasks for further development of this area in the conditions of the south of the Russian Far East.Results. Based on the results of many years of research, the model of tomato variety of universal type for open ground was specified taking into account the requirements of the modern market of Primorsky Krai: ripeness group – medium-early or medium-ripening, short sprouting-flowering period; determinant plant, compact with medium or high foliage and medium-sized leaves (important for mechanized cultivation); brush – simple or intermediate; stalk – without articulation or with thickening (easy fruit detachment); fruit – of different shape, weight 60-100 g dry matter content not less than 5%, with uniform coloring without a spot at the stalk in milk ripeness and different coloring in biological ripeness, resistant to cracking, vertex rot, with high storability and transportability; resistance – to sudden temperature changes, soil overwatering, high temperatures and air humidity during the fruiting period, to diseases of various etiologies, primarily to Alternaria and Phytophthora. Since a significant factor in reducing the productivity of varieties are diseases (as a result of increasing aggressiveness and expansion of the species composition of pathogens), the priority at present is breeding for immunity. Within this framework, intensive search for valuable sources and creation of new source material based on hybridization, individual and family selection from the best varietal and hybrid populations is carried out. Among the achievements of breeding of PVES promising are varieties Fitilek and Echo (tolerant to Alternaria), varieties Odyssey, Patrokl and Summit (tolerant to Phytophthora), on the basis of which parental lines are created. The breeding process also involves the most adaptive open field varieties of FSVC selection and the source of group resistance to Alternaria and Phytophthora - variety Ottava 30.Conclusion. Creation of targeted breeding achievements will allow to expand the variety range and saturate the vegetable market of this economically important region of the south of the Far East Primorye with domestic varieties within the framework of the import substitution program.

Relevance. The creation of varieties and hybrids with environmental sustainability is a priority in crop breeding. Many issues related to biology and ecology of a number of spice plants remain understudied. The study of the biological and ecological characteristics of common dill in order to create straight varieties with high yields in the phase of industrial ripeness in our conditions has not been carried out. The aim of the research was to evaluate the parameters of adaptive capacity and ecological stability in collection samples of common dill in terms of yield.Materials and methods. The research was carried out in the experimental field of the Department of Fruit and Vegetable Growing of the Belarusian State Agricultural Academy, Gorki, Mogilev region over a period of 2012–2014 and 2019–2021. The objects were breeding samples of common dill. Field and laboratory experiments were carried out using generally accepted methods and guidelines. The meteorological conditions during the years of the research differed both in terms of temperature indicators and the amount of precipitation, which contributed to an objective assessment of the varieties under study according to a complex of economically useful traits.Results. The article presents the results of the study of common dill breeding samples obtained in different years of research. In the first set (2012-2014) there were 40 sample plants, in the second set (2019-2020) – 26 pieces. In the course of assessing the parameters of adaptive capacity and ecological stability, the diversity among the samples of common dill was revealed according to the main parameters. The difference in terms of yield between sets of genotypes and test conditions over the years indicates the relationship between the genotype and the environment. Based on the results of studying the common dill collection, the parent material for breeding for a consistently high yield was selected. The regularity of maintaining the stability of the trait "yield" with a repeated set of genotypes in different years of research has been established.

Relevance. The aim of the work is to define the adaptive ability and environmental plasticity of pea genotypes of different ripeness groups which were selected in Krymsk EBS VIR Branch in special conditions of Krasnodar region. Materials and methods.Eleven pea varieties and one pea strain were sown for studying in fields of Krymsk EBS VIR Branch in 2013-2017. The area of the plot was 10 m2. Each variety was sown three times. The recording of the harvest was made in period of industrial ripeness. The share of influence of different factors on the yield of pea was defined with the help of mathematical methods. The differential ability of environmental and adaptive ability of genotypes, stability and environmental plasticity were also defined. Results.2013 was the most unfavorable year because of the bad weather conditions. That year the pea yield was only 5/1 tons per hectare. We detected a great influence of the environmental factors (38%), the genotype factors (31) and their cooperative factors (27) on the yield of pea. The main differential ability of environmental was detected in 2016 and 2016. There were average conditions in 2014. During all years of studying there was a high effect of environmental destabilization which showed the great difference between the yields of the different genotypes. The following genotypes were found: the genotypes with a high total adaptive ability – Kudesnik 2, Vesta (k-9352) Berkut (k-8856), G-344/16; stable genotypes – Krasavchik (k-9449) and Istok (k-9353); the genotypes with an environmental plasticity – Alpha (k-7071), Vesta (k-9352), Parus (k-9350), G-344/16. The varieties which were found for breeding purposes on the totality of different characteristics of adaptability, stability and environmental plasticity are Prima (o155213) of a very early ripeness group, Vesta (k-9352) – medium-early, Parus (k-9350, leafless) –medium and the G-344/16 – medium-late.

Relevance. Each sample is characterized by a number of biological features, due to the recombination of genetic material in the process of its selection. These features are manifested in the reaction of plants to soil-climatic and technological conditions, expressed in the change of the elements of the yield structure and indicators of the level of adaptability of plants to growing conditions, as well as resistance to lodging. New samples have little-known properties that need to be studied and compared in specific soil and climatic conditions, to assess them in order to decide on the possibility of their zoning or culling. The main indicators characterizing the level of agricultural production are productivity, resistance to lodging, since the shortage of grain as a result of lodging of cereals can reach 15-40%. The introduction of new high-yielding varieties on the basis of their testing and the use of the most effective technological methods of cultivation on crops will allow to receive a significant gross harvest.Materials and methods. The study was carried out in 2016-2018 to assess models of cultural hexaploid species of oats hulled and naked forms of resistance to lodging, yield and adaptability in the temperate continental climate of Central non-Chernozem zone. Resistance to lodging, yield variability, indices of environmental conditions and adaptability were determined. The main method of evaluation of the field resistance to lodging – visual (in points) that allows you to rank the varieties based on this characteristic. We were calculated potential productivity and adaptability of varieties by method L. A. Zhivotkov et al. [1], an indicator of the stability level of the sample yield (Puss) by the method of E. D. Nettevich et al. [2].Results. Many varieties showed good plasticity and high productivity potential. The best in resistance to lodging, yield and adaptability among the hulled forms were varieties Sig, Mirt, Poseidon, Belinda, Rajtar, and the naked forms – Becas, Vyatsky, Korolek.

Watermelon is one of the most common crops of medium melons. Biological peculiarities of cultivation of watermelon allow using global warming as a factor expanding the area for cultivation. Breeding work is carried out to develop new varieties and hybrids of watermelon suitable for cultivation in more Northern areas of the Russian Federation with a shorter vegetation period In Bykovskaya Melons and Gourds Experimental Breeding Station. To accomplish this goal the creation of new varieties of watermelon, early maturity with excellent taste, friendly fruit ripening, drought-resistant, suitable for intensive cultivation technology is carried out. Currently, the new early maturing variety of watermelon ‘Meteor’ with a growing period for 65-70 days and dry matter content to 12.0% has been transferred to the State Variety Trial. According to research results, comparative characteristics between new promising variety ‘Meteor’ and control variety ‘Zenith’ were given. The ‘Meteor exceeded the standard variety in yield ability by 19.0 сwt/ha. According to pathogen tests for complex resistance the ‘Meteor’ exceeded the control by 6.4 % for Fusarium, and scored at 0.8 against Anthracnose attack.

Allium oschaninii O. Fedtsch. is distributed in the middle belt of the Pamir and Altai mountains. The local population uses leaves and bulbs for food in fresh and canned form. Selective forms of onion Oshanina still does not exist. The research was carried out in the AllRussian Research Institute of Vegetable Growing a branch of the Federal State Budget Scientific Institution "Federal Scientific Center for Vegetable Growing" (VNIIO branch of FGBNU FNCS) in 20142017. The object of the study was a collection of five samples of A. oschaninii O. Fedtsch. of various origins. Experiments were conducted to study and describe the biological and economic features of onion Oshanin (Allium oschaninii O. Fedtsch.) In the Moscow region; statistical processing and analysis of research results; methods for describing the characteristics used to assess distinctness, uniformity and stability are given. The object of the research was a collection of five samples A. oschaninii O. Fedtsch. of various origins. Methodical recommendations for registration of onion Oshanin (A. oschaninii O. Fedtsch.) In the State Register of Selection Achievements, admitted to use in the territory of the Russian Federation, for introduction into culture and introduction into production, are developed. The methodological recommendations have been prepared in accordance with the principles of similar methods used in UPOV and the State Commission of the Russian Federation for Testing and Preservation of Selection Achievements. A system of parameters has been developed, the use of which will ensure the contribution of new knowledge to the theory and practice of seed selection and production, will help to speed up the development of new varieties and hybrids with high winter hardiness, with early and harmonious growth of leaves, a long period of preservation of commercial qualities of green products resistant to peronosporosis for the Non-chernozem zone of the Russian Federation, to assess the effectiveness of selection work in order to increase yields, improve product quality and increase the resistance of new varieties to the impact of factors on of the circling medium. The results of the research can be used in breeding organizations and state stations, in the description of new varieties based on the characteristics used to assess distinctness, uniformity and stability.

The characteristics of adaptability of 24 pea varieties to justify the use of the assortment in the technology of conveyor cultivation of raw green peas for freezing in conditions of the south-west of the CCZ is presented.

Relevance. In the Republic of Moldova in recent years, during tomato flowering, air temperature reaches 35°С and higher, which significantly reduces fruit set, yield and product quality, therefore, the creation of varieties resistant to temperature stress is of particular importance. The relevance of the studies is due to the need to identify tomato genotypes resistant to high temperatures, to identify the genetic nature of the variability and degree of inheritance of tomato growth organs when interacting with different temperature conditions. The purpose of the research is to determine the effect of stress temperatures on the organs of growth and development of tomato plants at an early stage of ontogenesis, the degree of genetic, phenotypic variation and inheritance of characters. Materials and methods. The research material was 5 promising lines of tomato with high economically valuable traits. As a standard, a omologated variety Mary Gratefully was used. Four temperature levels were used – optimal (25°С) and stress (38, 40 and 42°С). The length of the germinal root and stem of 7-day-old plants was measured. The experiment was made in 3 replicates. The following were studied: genetic and phenotypic variants, heritability coefficient, phenotypic and genotypic coefficients of variation, genetic progress. The data were processed in the STATISTICA 7 software package. Results. As a result of the studies, a significant differentiation of the reaction of tomato genotypes to temperature stress was revealed. A significant effect of temperature on the genetic and phenotypic varieties of signs of growth and development of tomato plants, heritability in the broad sense, genotypic and phenotypic coefficient of variation, and genetic progress have been established. Of a great interest for further studies are the Mary Gratefully, L 304, L 306 genotypes, which are highly resistant to the studied traits.

At the first stage of breeding, the new source material was created to obtain a variety of daikon resistant to abiotic factors with high productivity and commercial qualities, better taste, and biochemical properties. Eighteen samples from Russia, Ukraine, Belarus, China, Korea, and Japan were in the nursery of the original forms. The following breeding types were used in the hybrid nursery: 1) crossing of several morphologically close samples originating from geographically remote areas; 2) paired crosses of morphologically and biologically different samples. Breeding was carried out on an accelerated scheme: before harvesting, samples were evaluated for resistance to bolting, shape and color of the roots, taste qualities, and affection with diseases; in February, the roots were planted in temporary greenhouses in pairs for hybridization; seeds were threshed in mid-July; the hybrid seeds were sown on the roots in early August; the roots were harvested and evaluated 60-65 days after the moment of sprouting. Then, the 1.5-year cycle was repeated until the constant lines were obtained. Yield fluctuations were determined by taking into account the sum of effective temperatures and precipitation for the period “sprouting – harvest” [4]. Slight variability in the yield at high agronomic stability was observed for the varieties Sokol, Gulliver, and hybrid No. 41. The standard (variety Klyk slona) differed from other varieties by high variability in the yield and insufficiently high agronomic stability (66%). We found that there was the fluctuation of the yield of modern varieties: Klyk slona by 22 t/ha, Gulliver by 9 t/ha, Sokol by 14 t/ha, and hybrid No. 41 by 15 t/ha. It was estimated that for every 1 degree Celsius rise in the amounts of effective temperatures the yield of the aforementioned varieties decreased: 9.7; 38; 7.4 and 66 kg/ha, respectively. And, vice versa, if the amount of precipitation increased by 1 mm, the yield of Klyk slona would increase by 17 kg/ha, Gulliver - by 10 kg/ha, Sokol - by 11 kg/ha, and hybrid No. 41 – by 6 kg/ha. The technology and method for initial seed production of daikon have been developed with the preserved economic and biological characteristics. The daikon variety Sokol was created and included in the State Register.

Relevance. The use of biological preparations in agricultural technology of agricultural crops contributes to the preservation of agrophytocenosis, reduces environmental pollution and has a positive effect on the growth and development of the plants themselves. In this regard, the determination of the effectiveness of the use of biological products in the presowing treatment of common bean seeds is relevant and timely.Materials and methods. In our study, we studied the effect of presowing treatment of common bean seeds with biological products: Polydon Bio Profi, Polydon Amino Mix, Polydon Aminomix, Alfastim on germination energy, germination, seed sprout size, number of roots and length of the root system. Three varieties were taken as objects of study: Athlete, Omichka, Sirenevaya.Results. A different effect of preparations on the time of seed germination was revealed. The average germination time in options 1-4 was higher than the control values for all varieties, i.e. drugs slowed down germination. The seeds of the tested varieties responded positively to treatment with Alfastim (option 5): the average germination time in Fizkulturnitsa and Sirenevaya decreased by 8.5 and 9.8%, in the Omichka variety by 45%, compared with the control. Among the tested varieties, it is necessary to single out the Sirenevaya variety, which has the highest germination energy (ES) from 90% to 100% and seed germination (VS) from 98-100% in all treatment options. The most effective treatment of the Omichka variety was in option 2 (EP-90%, germination rate 90%), the values exceeded the control by 5%. For all options, the germination energy of the Fizkulturnitsa variety ranged from 72 to 90%, germination from 73 to 93%. A positive effect of drugs on the germination of seeds of this variety was established. The defeat of bean seeds by mold fungi was noted. Seed damage is mild to moderate. Seed damage by mold fungi in the variants using Polydon Bio Profi was absent, or it was weak up to 3.3% for all tested varieties. Morphobiometric indicators of seedlings and their root system in all varieties developed more effectively on variants with the use of Polydon Bio Profi and Alfastim preparations, and their mixtures