Purpose. To determine the level of productivity of sunflower hybrids, their stability and plasticity for cultivation in the Left Bank Forest-Steppe of Ukraine. Methods. The field experiment was performed in the conditions of the Left-Bank Forest-Steppe of Ukraine in 2016–2018. The peculiarities of plant growth and development, formation of yield of hybrids ‘Ukrainskyi F1’ (k), ‘P64LL125’, ‘P63LE10’, ‘P64F50’, ‘P64F66’, ‘P63LL06’, ‘NK Konti’ (k), ‘NK Brio’, ‘P64LE99’, ‘Laskala’, ‘Kupava’. Yield plasticity was calculated and analyzed by the Ebergard – Russell method. Results. Over the years of research, the average yield of sunflower hybrids in the Left-Bank Forest-Steppe of Ukraine varied from 2.71 to 4.04 t/ha. The lowest yield was shown by the ‘Ukrainskyi F1’ hybrid – 2.42–3.05 t/ha, the highest ‘Laskala’ – 3.79–4.26 t/ha. It was determined that in the conditions of the Left-Bank Forest-Steppe, there is no absolute predominance of medium-ripe hybrids in terms of yield. Conclusions. According to the results of the analysis of yield plasticity of sunflower hybrids, it was determined that the group of samples with high yield plasticity includes ‘Ukrainskyi F1’, ‘P64F50’, ‘P64F66’, ‘NK Konti’, ‘NK Brio’, ‘P64LE99’, ‘Lascala’ and ‘Kupava’. They respond to the improvement of the level of agricultural technology and provide the maximum yield only under the conditions of optimal factors. Hybrids ‘P64LL125’, ‘P63LE10’ and ‘P63LL06’ are more stable in response to changes in growing conditions without reductions in yield. As for the shares of the influence of the studied factors, the yield of the hybrid ‘Ukrainskyi F1’ was most influenced by the conditions of the year, ‘NK Brio’ – the sowing rate. For the ‘NK Ferti’ hybrid, the conditions of the year and the sowing rate are equally important.

Purpose. To determine the level of productivity of sunflower hybrids, their stability and plasticity for cultivation in the Left Bank Forest-Steppe of Ukraine. Methods. The field experiment was performed in the conditions of the Left-Bank Forest-Steppe of Ukraine in 2016–2018. The peculiarities of plant growth and development, formation of yield of hybrids ‘Ukrainskyi F1’ (k), ‘P64LL125’, ‘P63LE10’, ‘P64F50’, ‘P64F66’, ‘P63LL06’, ‘NK Konti’ (k), ‘NK Brio’, ‘P64LE99’, ‘Laskala’, ‘Kupava’. Yield plasticity was calculated and analyzed by the Ebergard – Russell method. Results. Over the years of research, the average yield of sunflower hybrids in the Left-Bank Forest-Steppe of Ukraine varied from 2.71 to 4.04 t/ha. The lowest yield was shown by the ‘Ukrainskyi F1’ hybrid – 2.42–3.05 t/ha, the highest ‘Laskala’ – 3.79–4.26 t/ha. It was determined that in the conditions of the Left-Bank Forest-Steppe, there is no absolute predominance of medium-ripe hybrids in terms of yield. Conclusions. According to the results of the analysis of yield plasticity of sunflower hybrids, it was determined that the group of samples with high yield plasticity includes ‘Ukrainskyi F1’, ‘P64F50’, ‘P64F66’, ‘NK Konti’, ‘NK Brio’, ‘P64LE99’, ‘Lascala’ and ‘Kupava’. They respond to the improvement of the level of agricultural technology and provide the maximum yield only under the conditions of optimal factors. Hybrids ‘P64LL125’, ‘P63LE10’ and ‘P63LL06’ are more stable in response to changes in growing conditions without reductions in yield. As for the shares of the influence of the studied factors, the yield of the hybrid ‘Ukrainskyi F1’ was most influenced by the conditions of the year, ‘NK Brio’ – the sowing rate. For the ‘NK Ferti’ hybrid, the conditions of the year and the sowing rate are equally important.

Pourpose. Establish compliance of heat and moisture resources to biological requirements of sunflower hybrids (Helianthus annuus), reveal criteria for assessing weather conditions in the northern regions of Ukraine; establish links between temperature, precipitation and yield. Methods. Field and mathematical methods were used. Field multifactorial experiment was conducted during 2016–2018 in the Left Bank of Ukraine, on the border of two soil and climatic zones of Ukraine - Forest-Steppe and Polissya. Peculiarities of plant growth and development, formation of "hybrids" yield (factor A) were studied: 'Ukrainskyi F1', 'P63LL06', 'NK Brio', 'NK Ferti' depending on "plant density" (factor B): 50, 55 , 60, 65 thousand pieces/hectare. We calculated and analyzed the sums of active, effective temperatures for two biological minima - 5 and 10 ° C; the sum of thermal units according to the method of Brown and Bootsma, 1993; coefficients of materiality of elements deviations of the agrometeorological mode of the current year from long-term averages; plasticity and yield stability according to the method of Eberthart S.A., Russel W.Q. (1966). Results. To pass the full cycle of sunflower plants development, the sum of active temperatures (t = 10 °C) for hybrid 'Ukrainskyi F1' – 2354.6; P63LL06 – 2306.4; 'NK Brio' – 2401.3; 'NK Ferti' – 2379.7; and the sum of effective temperatures for 'Ukrainskyi F1'- 1081.5; 'P63LL06' – 1056.9; 'NK Brio' – 1104.9; 'NK Ferti' – 1109.1 is required. The sum of temperatures, both at a biological minimum temperature 10 °C and 5 °C, meet biological needs of sunflower plants and is not a limiting factor for this crop growing. The sum of thermal units for the period April–October is 3780 on average for three years. During the period of active sunflower vegetation (April–August) the sum of thermal units is 2868–3258, significantly exceeding the sum of active and effective temperatures at biologically active temperatures 5 °С and 10 °С. The most determined limits of changes in active, effective temperatures and thermal units were observed in May – September. Conclusions. Plasticity and stability of sunflower yield more depending on hybrid and plants density than on conditions of the year. Yield stability coefficient for hybrid 'Ukrainskyi F1' was 1.68 - 2.30; 'P63LL06'- 2.51 - 3.14; 'NK Brio'- 3.15 - 4.63; 'NK Ferti' - 2.70 - 3.75 for yields, respectively: 2.16 - 3.11; 2.58 - 3.52; 3.20 - 4.12; 2.70 - 3.79 t/ha.

Pourpose. Establish compliance of heat and moisture resources to biological requirements of sunflower hybrids (Helianthus annuus), reveal criteria for assessing weather conditions in the northern regions of Ukraine; establish links between temperature, precipitation and yield.Methods. Field and mathematical methods were used. Field multifactorial experiment was conducted during 2016–2018 in the Left Bank of Ukraine, on the border of two soil and climatic zones of Ukraine - Forest-Steppe and Polissya. Peculiarities of plant growth and development, formation of "hybrids" yield (factor A) were studied: 'Ukrainskyi F1', 'P63LL06', 'NK Brio', 'NK Ferti' depending on "plant density" (factor B): 50, 55 , 60, 65 thousand pieces/hectare. We calculated and analyzed the sums of active, effective temperatures for two biological minima - 5 and 10 ° C; the sum of thermal units according to the method of Brown and Bootsma, 1993; coefficients of materiality of elements deviations of the agrometeorological mode of the current year from long-term averages; plasticity and yield stability according to the method of Eberthart S.A., Russel W.Q. (1966).Results. To pass the full cycle of sunflower plants development, the sum of active temperatures (t = 10 °C) for hybrid 'Ukrainskyi F1' – 2354.6; P63LL06 – 2306.4; 'NK Brio' – 2401.3; 'NK Ferti' – 2379.7; and the sum of effective temperatures for 'Ukrainskyi F1'- 1081.5; 'P63LL06' – 1056.9; 'NK Brio' – 1104.9; 'NK Ferti' – 1109.1 is required. The sum of temperatures, both at a biological minimum temperature 10 °C and 5 °C, meet biological needs of sunflower plants and is not a limiting factor for this crop growing. The sum of thermal units for the period April–October is 3780 on average for three years. During the period of active sunflower vegetation (April–August) the sum of thermal units is 2868–3258, significantly exceeding the sum of active and effective temperatures at biologically active temperatures 5 °С and 10 °С. The most determined limits of changes in active, effective temperatures and thermal units were observed in May – September.Conclusions. Plasticity and stability of sunflower yield more depending on hybrid and plants density than on conditions of the year. Yield stability coefficient for hybrid 'Ukrainskyi F1' was 1.68 - 2.30; 'P63LL06'- 2.51 - 3.14; 'NK Brio'- 3.15 - 4.63; 'NK Ferti' - 2.70 - 3.75 for yields, respectively: 2.16 - 3.11; 2.58 - 3.52; 3.20 - 4.12; 2.70 - 3.79 t/ha. | Мета. Встановити відповідність ресурсів тепла та вологи біологічним вимогам гібридів соняшнику (Helianthus annuus L.); встановити критеріальні показники оцінювання погодних умов в північних регіонах України; встановити зв’язки між температурним режимом, сумою опадів та врожайністю.Методи. Використовували польовий та математичний методи. Польовий багатофакторний дослід проводили в 2016–2018 роках в Лівобережному Лісостепу України на межі двох ґрунтово-кліматичних зон – Лісостепу і Полісся. Досліджували особливості росту та розвитку рослин, формування врожайності «гібридів» (фактор А) ‘Український F1’, ‘Р63LL06’, ‘НК Бріо’, ‘НК Ферті’ залежно від «густоти рослин» (фактор В): 50, 55, 60, 65 тис. шт./га. Розраховували й аналізували суми активних та ефективних температур за двома біологічними мінімумами – 5 і 10 °С; суми теплових одиниць за методикою Brown and Bootsma (1993); коефіцієнти суттєвості відхилень елементів погоди поточного року від середніх багаторічних; пластичність і стабільність урожайності за методикою Eberthart S. A., Russel W. Q. (1966).Результати. Для проходження повного циклу розвитку рослин соняшнику необхідна сума активних температур (tб.м. = 10 °C) для гібрида ‘Український F1’ – 2354,6; ‘Р63LL06’ – 2306,4; ‘НК Бріо’ – 2401,3; ‘НК Ферті’ – 2379,7; сума ефективних температур: ‘Український F1’ – 1081,5; ‘Р63LL06’ – 1056,9; ‘НК Бріо’ – 1104,9; ‘НК Ферті’ – 1109,1. Суми температур як за температурою біологічного мінімуму 10 °C, так і 5 °C, відповідають біологічним потребам рослин соняшнику і не є обмежувальним чинником для вирощування. Сума теплових одиниць за період квітень–жовтень складала в середньому за три роки 3780. За період активної вегетації соняшнику (квітень–серпень) сума теплових одиниць складала 2868–3258, суттєво перевищуючи суму активних та ефективних температур за біологічно активних температур 5 °С і 10 °С. Найбільш детерміновані межі змін активних, ефективних температур і теплових одиниць спостерігали в період травень–вересень.Висновки. Пластичність і стабільність урожайності соняшнику більше змінюються залежно від гібрида і густоти рослин, ніж від умов року. Коефіцієнт стабільності врожайності для гібрида ‘Український F1’ склав 1,68–2,30; ‘Р63LL06’ – 2,51–3,14; ‘НК Бріо’ – 3,15–4,63; ‘НК Ферті’ – 2,70–3,75 за урожайності 2,16–3,11; 2,58–3,52; 3,20–4,12; 2,70–3,79 т/га, відповідно. | Цель. Установить соответствие ресурсов тепла и влаги биологическим потребностям гибридов подсолнечника (Helianthus annuus L.); установить критериальные показатели оценивания погодных условий в северных регионах Украины; установить связь между температурным режимом, осадками и урожайностью.Методы. Использовали полевой и математический методы. Полевой многофакторный опыт проводили в 2016–2018 годах в Левобережной Лесостепи Украины. Исследовали особенности роста и развития растений, формирования урожайности «гибридов» (фактор А): ‘Украинский F1’, ‘Р63LL06’, ‘НК Брио’, ‘НК Ферти’ в зависимости от «густоты стояния растений» (фактор В): 50, 55, 60, 65 тыс. штук/га. Рассчитывали и анализировали суммы активных, эффективных температур по  двум биологическим минимумам – 5 и 10 °С; суммы тепловых единиц по методике Brown and Bootsma (1993); коэффициенты существенности отклонений погодных условий от средних многолетних данных; пластичность и стабильность урожайности по методике Eberthart S. A., Russel W. Q. (1966).Результаты. Для прохождения полного цикла развития растений подсолнечника, необходима сумма активных температур (tб.м. = 10 °C) для гибрида ‘Украинский F1’ – 2355; ‘Р63LL06’ – 2306; ‘НК Брио’ – 2401; ‘НК Ферти’ – 2380; сумма эффективных температур: ‘Украинский F1’ – 1082; ‘Р63LL06’ – 1057; ‘НК Брио’ – 1104,9; ‘НК Ферти’ – 1109. Суммы температур как при биологическом минимуме 10 °C, так и 5 °C, соответствуют биологическим требованиям растений подсолнечника и не являются лимитирующим фактором для выращивания. Сумма тепловых единиц за период апрель–октябрь составляла в среднем за три года – 3780. В период активной вегетации подсолнечника (апрель–август) сумма тепловых единиц составляла 2868–3258 и существенно превышала сумму активных и эффективных температур при биологически активных температурах 5 °С и 10 °С. Наиболее детерминированные границы изменений активных, эффективных температур и тепловых единиц наблюдали в мае–сентябре.Выводы. Пластичность и стабильность урожайности подсолнечника больше изменяются в зависимости от гибрида и густоты стояния растений, чем от погодных условий года. Коэффициент стабильности урожайности для гибрида ‘Украинский F1’ составил 1,68–2,30; ‘Р63LL06’ – 2,51–3,14; ‘НК Брио’ – 3,15–4,63; ‘НК Ферти’ – 2,70–3,75 при урожайности 2,16–3,11; 2,58–3,52; 3,20–4,12; 2,70–3,79 т/га соответственно.

Pourpose. Establish compliance of heat and moisture resources to biological requirements of sunflower hybrids (Helianthus annuus), reveal criteria for assessing weather conditions in the northern regions of Ukraine; establish links between temperature, precipitation and yield. Methods. Field and mathematical methods were used. Field multifactorial experiment was conducted during 2016–2018 in the Left Bank of Ukraine, on the border of two soil and climatic zones of Ukraine - Forest-Steppe and Polissya. Peculiarities of plant growth and development, formation of "hybrids" yield (factor A) were studied: 'Ukrainskyi F1', 'P63LL06', 'NK Brio', 'NK Ferti' depending on "plant density" (factor B): 50, 55 , 60, 65 thousand pieces/hectare. We calculated and analyzed the sums of active, effective temperatures for two biological minima - 5 and 10 ° C; the sum of thermal units according to the method of Brown and Bootsma, 1993; coefficients of materiality of elements deviations of the agrometeorological mode of the current year from long-term averages; plasticity and yield stability according to the method of Eberthart S.A., Russel W.Q. (1966). Results. To pass the full cycle of sunflower plants development, the sum of active temperatures (t = 10 °C) for hybrid 'Ukrainskyi F1' – 2354.6; P63LL06 – 2306.4; 'NK Brio' – 2401.3; 'NK Ferti' – 2379.7; and the sum of effective temperatures for 'Ukrainskyi F1'- 1081.5; 'P63LL06' – 1056.9; 'NK Brio' – 1104.9; 'NK Ferti' – 1109.1 is required. The sum of temperatures, both at a biological minimum temperature 10 °C and 5 °C, meet biological needs of sunflower plants and is not a limiting factor for this crop growing. The sum of thermal units for the period April–October is 3780 on average for three years. During the period of active sunflower vegetation (April–August) the sum of thermal units is 2868–3258, significantly exceeding the sum of active and effective temperatures at biologically active temperatures 5 °С and 10 °С. The most determined limits of changes in active, effective temperatures and thermal units were observed in May – September. Conclusions. Plasticity and stability of sunflower yield more depending on hybrid and plants density than on conditions of the year. Yield stability coefficient for hybrid 'Ukrainskyi F1' was 1.68 - 2.30; 'P63LL06'- 2.51 - 3.14; 'NK Brio'- 3.15 - 4.63; 'NK Ferti' - 2.70 - 3.75 for yields, respectively: 2.16 - 3.11; 2.58 - 3.52; 3.20 - 4.12; 2.70 - 3.79 t/ha.

Analysis of oilseeds in Ukraine, including sunflower, soybean, winter and spring rape, mustard, linseed, sesame, spring false flax, safflower. Presented research-based elements of the technology of cultivation. Described seed of oilseeds. Named most promising varieties of these crops. Disclosed their productive and qualitative potential. The above varietal structure of oilseeds in the State Register of plant varieties suitable for dissemination in Ukraine for years. In order to ensure stable population of oil and food, which include oil, and for the implementation of programs related to soil fertility, scientifically grounded recommended area of oilseeds in Ukraine for 2013–2015 years, ha.

The article highlights current problems of cutting lettuce seed production for all its variants. Research background is provided to the composition of material expenditures for growing of every variant in particular. Economical efficiency of seed production in line with varietal certification requirements has been reproved.

Purpose. Reveal the features of the formation of a quali­ty indicator complex in winter bread wheat depending on the growing seasons, preceding crops and sowing dates, as well as differentiate and identify genotypes with high and stable levels of manifestation. Methods. Field, laboratory, statistical. Results. A different share of the influence of the year conditions, the preceding crop, the sowing date and their interactions on the quality indicators of some varie­ties was determined. A different reaction of varieties in terms of quality indicators, depending on the investigated factors was revealed. The variation was very low for test weight, water absorption ability of flour, crumb porosity. Strong variation was observed for flour strength after sunflower and soybean as preceding crops, alveograph configuration ratio after sunflower and soybean, index of elasticity dough after corn, valorimetric value after mustard, dough dilution degree after green manure, sunflower, corn and especially after mustard and soybeans. The varieties, which on average for 2016/17–2018/19 reliably exceeded the standard both in individual indicators and in general in terms of physical indicators of grain and flour quality and dough rheological properties. GYT biplot analysis identified the genotypes ‘MIP Vidznaka’ and ‘MIP Assol’ with a more optimal combination of increased yield and a complex of quality indicators in terms of different years, preceding crops and sowing dates. Some varieties, namely, ‘Estafeta myronivs’ka’, ‘Trudiv­nytsia myronivs’ka’, ‘MIP Valensiia’, ‘MIP Yuvileina’, ‘Balada myronivs’ka’, ‘Vezha myronivs’ka’ were inferior to them, but were significantly superior the others. Conclusions. The selected by quality indicators varieties as genetic sources can be used in breeding process. A more stable level of yield and quality indicators at different sowing dates after different preceding crops should be expected for growing varieties ‘MIP Vidznaka’, ‘MIP Assol’, as well as ‘Estafeta myronivs’ka’, ‘Trudivnytsia myronivs’ka’, ‘MIP Valensiia’, ‘MIP Yuvileina’, ‘Balada myronivs’ka’, ‘Vezha myronivs’ka’. The peculiarities obtained in the research should be taken into account when evaluating and differentiating genotypes in breeding process, as well as developing basic elements of technology for growing the varieties of winter bread wheat.

Purpose. Reveal the features of the formation of a quali­ty indicator complex in winter bread wheat depending on the growing seasons, preceding crops and sowing dates, as well as differentiate and identify genotypes with high and stable levels of manifestation. Methods. Field, laboratory, statistical. Results. A different share of the influence of the year conditions, the preceding crop, the sowing date and their interactions on the quality indicators of some varie­ties was determined. A different reaction of varieties in terms of quality indicators, depending on the investigated factors was revealed. The variation was very low for test weight, water absorption ability of flour, crumb porosity. Strong variation was observed for flour strength after sunflower and soybean as preceding crops, alveograph configuration ratio after sunflower and soybean, index of elasticity dough after corn, valorimetric value after mustard, dough dilution degree after green manure, sunflower, corn and especially after mustard and soybeans. The varieties, which on average for 2016/17–2018/19 reliably exceeded the standard both in individual indicators and in general in terms of physical indicators of grain and flour quality and dough rheological properties. GYT biplot analysis identified the genotypes ‘MIP Vidznaka’ and ‘MIP Assol’ with a more optimal combination of increased yield and a complex of quality indicators in terms of different years, preceding crops and sowing dates. Some varieties, namely, ‘Estafeta myronivs’ka’, ‘Trudiv­nytsia myronivs’ka’, ‘MIP Valensiia’, ‘MIP Yuvileina’, ‘Balada myronivs’ka’, ‘Vezha myronivs’ka’ were inferior to them, but were significantly superior the others. Conclusions. The selected by quality indicators varieties as genetic sources can be used in breeding process. A more stable level of yield and quality indicators at different sowing dates after different preceding crops should be expected for growing varieties ‘MIP Vidznaka’, ‘MIP Assol’, as well as ‘Estafeta myronivs’ka’, ‘Trudivnytsia myronivs’ka’, ‘MIP Valensiia’, ‘MIP Yuvileina’, ‘Balada myronivs’ka’, ‘Vezha myronivs’ka’. The peculiarities obtained in the research should be taken into account when evaluating and differentiating genotypes in breeding process, as well as developing basic elements of technology for growing the varieties of winter bread wheat.

Purpose. Determine the ecological plasticity and productivity of F1 sunflower hybrids created on the basis of maternal and parental lines, selected according to an accelerated selection system of lines resistant to herbicides (imidazoline and sulfonylurea groups) and broomrape (Orobanche cumana Wallr.). Methods. Statistical analysis of F1 sunflower hybrids was carried out using the methods of variation statistics, regression and analysis of variance using the Microsoft Office Excel 2016 application package. Molecular biological, biotechnological and classical selection methods were used for the accelerated system of line selection. Thus, for the purpose of targeted selection of sunflower sterility fixers, we used HRG01 molecular SCAR marker to identify the gene for the restoration of pollen fertility (Rf1). To accelerate the creation of parental lines resistant to tribenuron-methyl, we used a culture of immature embryos in vitro. Results. The results of testing of F1 sunflower hybrids at Kyiv, Chernihiv, Cherkasy (Uman and Shpolianskyi districts), Khmelnytskyi, Kharkiv, Kherson and Odesa regions. The hybrids were created on the basis of selected lines, chosen according to an accelerated selection system for herbicide-resistant lines (imidazoline (IMI-hybrids) and sulfonylurea (SU-hybrids) groups) and broomrape (Orobanche cumana Wall). The standards for comparison with hybrids were: for IMI hybrids – hybrids ‘NK Neoma’ (Syngenta) and ‘ES Genesis’ (Euralis), and for SU-hybrids – ‘SY Sumiko’ (Syngenta) and ‘P64LE25’ (Pioneer). As a result, it was found that among SU-hybrids, UA 2/106 had a 3.9% higher yield when compared to the standards (‘SY Sumiko’ and ‘P64LE25’). And for IMI-hybrids it was found that hybrids UA 1/67, UA 1/66, UA 1/84 have the same yield of 2.76 t/ha as the ‘NK Neoma’ standard. IMI hybrids UA 1/92, UA 1/102 have the same yield of 2.91 t/ha as ‘ES Genesis’. Conclusions. F1 hybrids were created on the basis of the original breeding material selected due to the accelerated system of sunflower lines selection. The hybrids were analyzed according to the yield indicator. The most productive among the tested SU-hybrids was UA 2/106 hybrid, among the IMI hybrids – UA 1/67, UA 1/66, UA 1/84, UA 1/92 and UA 1/102.

Purpose. Determine the ecological plasticity and productivity of F1 sunflower hybrids created on the basis of maternal and parental lines, selected according to an accelerated selection system of lines resistant to herbicides (imidazoline and sulfonylurea groups) and broomrape (Orobanche cumana Wallr.). Methods. Statistical analysis of F1 sunflower hybrids was carried out using the methods of variation statistics, regression and analysis of variance using the Microsoft Office Excel 2016 application package. Molecular biological, biotechnological and classical selection methods were used for the accelerated system of line selection. Thus, for the purpose of targeted selection of sunflower sterility fixers, we used HRG01 molecular SCAR marker to identify the gene for the restoration of pollen fertility (Rf1). To accelerate the creation of parental lines resistant to tribenuron-methyl, we used a culture of immature embryos in vitro. Results. The results of testing of F1 sunflower hybrids at Kyiv, Chernihiv, Cherkasy (Uman and Shpolianskyi districts), Khmelnytskyi, Kharkiv, Kherson and Odesa regions. The hybrids were created on the basis of selected lines, chosen according to an accelerated selection system for herbicide-resistant lines (imidazoline (IMI-hybrids) and sulfonylurea (SU-hybrids) groups) and broomrape (Orobanche cumana Wall). The standards for comparison with hybrids were: for IMI hybrids – hybrids ‘NK Neoma’ (Syngenta) and ‘ES Genesis’ (Euralis), and for SU-hybrids – ‘SY Sumiko’ (Syngenta) and ‘P64LE25’ (Pioneer). As a result, it was found that among SU-hybrids, UA 2/106 had a 3.9% higher yield when compared to the standards (‘SY Sumiko’ and ‘P64LE25’). And for IMI-hybrids it was found that hybrids UA 1/67, UA 1/66, UA 1/84 have the same yield of 2.76 t/ha as the ‘NK Neoma’ standard. IMI hybrids UA 1/92, UA 1/102 have the same yield of 2.91 t/ha as ‘ES Genesis’. Conclusions. F1 hybrids were created on the basis of the original breeding material selected due to the accelerated system of sunflower lines selection. The hybrids were analyzed according to the yield indicator. The most productive among the tested SU-hybrids was UA 2/106 hybrid, among the IMI hybrids – UA 1/67, UA 1/66, UA 1/84, UA 1/92 and UA 1/102.

Purpose. To determine the effectiveness of using contrasting sowing dates after different predecessors to assess the genotypes of bread winter wheat in terms of yield and stability. Methods. Field, laboratory, mathematical statistics. Results. A different, but reliable level of influence on the yield of bread winter wheat genotypes of such factors as conditions of the year of cultivation (66.2%), predecessors (12.5%), sowing date (6.1%) and genotype (1.7%) was revealed. Significant differences were noted in the response of the studied genotypes to the sowing date after different predecessors. Relatively less influence of the predecessors on the yield of the varieties ‘Estafeta Myronivska’ and ‘Vezha Myronivska’ was revealed, more – for the varieties ‘MIP Darunok’, ‘MIP Kniazhna’ and ‘MIP Vyshyvanka’. The sowing dates had less influence on the yield of the varieties ‘MIP Fortuna’, ‘MIP Vyshyvanka’ and ‘Trudivnytsia Myronivska’. A general tendency for decrease in the average annual yield was established in the experiment with a shift in the sowing dates from September 26 to October 16. However, for the number of genotypes after certain predecessors, the optimal sowing date was the 5th of October: after the predecessor, green-manure fallow – for varieties ‘Trudivnytsia myronivska’, ‘MIP Assol’ and ‘MIP Dniprianka’, after mustard – ‘Vezha Myronivska’, after sunflower – ‘MIP Fortuna’, after corn – ‘MIP Fortuna’ and ‘Podolianka’. In terms of sowing dates, the least variation in yield was found after the predecessors green manure, mustard and corn varieties ‘MIP Vyshyvanka’, ‘Balada Myronivska’, ‘MIP Kniazhna’, ‘Estafeta Myronivska’. Using the GGE biplot, it was found that close to the ‘ideal environment’ for the realization of the yield level of most genotypes was the second sowing date after greenmanure fallow predecessor. For different sowing dates and predecessors, on average for three years, the optimal combination of the level of yield and stability was noted for the varieties ‘Trudivnytsia Myronivska’, ‘MIP Vidznaka’, ‘MIP Assol’, ‘Estafeta Myronivska’, ‘MIP Valensiia’. Conclusions. Thus, the use of different so wing dates after various predecessors is an effective approach to organization of genotype-environmental tests. It makes it possible to identify the genotypes which are specifically adapted to certain conditions (predecessors and sowing dates) and genotypes with a relatively high level of stability when sowing after various predecessors and on different dates. This approach can be used both at the final stage of breeding to differentiate breeding lines for yield and stability, and in the development of basic elements of technology for growing newly created varieties.

Мета. Виявити ефективність використання контрастних строків сівби після різних попередників для оцінювання генотипів пшениці м’якої озимої за врожайністю та стабільністю.Методи. Польові, лабораторні, статистичні.Результати. Установлено різний, але достовірний рівень впливу на врожайність генотипів пшениці м’якої озимої таких чинників, як умови року вирощування (66,2%), попередники (12,5%), строки сівби (6,1%) та генотип (1,7%). Відзначено достовірні відмітності в реакції досліджених генотипів на строки сівби після різних попередників. Виявлено відносно менший вплив попередників на врожайність сортів ‘Естафета миронівська’ та ‘Вежа миронівська’, більший – ‘МІП Дарунок’, ‘МІП Княжна’ та ‘МІП Вишиванка’. Строки сівби менше впливали на врожайність сортів ‘МІП Фортуна’, ‘МІП Вишиванка’ та ‘Трудівниця миронівська’, значно – сорту ‘МІП Дарунок’. Установлено загальну тенденцію зменшення середньої врожайності в досліді зі зміщенням строку сівби від 26 вересня до 16 жовтня. Однак, для низки генотипів після певних попередників оптимальним був строк сівби 5 жовтня: після попередника сидеральний пар – для сортів ‘Трудівниця миронівська’, ‘МІП Ассоль’ та ‘МІП Дніпрянка’, після гірчиці – ‘Вежа миронівська’, після соняшнику – ‘МІП Фортуна’, після кукурудзи – ‘МІП Фортуна’ та ‘Подолянка’. У розрізі строків сівби встановлено найменше варіювання врожайності після попередників сидеральний пар, гірчиця та кукурудза сортів ‘МІП Вишиванка’, ‘Балада миронівська’, ‘МІП Княжна’, ‘Естафета миронівська’. З використанням GGE biplot виявлено, що наближеним до «ідеального середовища» для реалізації рівня врожайності більшості генотипів був другий строк сівби після попередника сидеральний пар. За різними строками сівби й попередниками в середньому за три роки найоптимальніше поєднання рівня врожайності і стабільності відзначено для сортів ‘Трудівниця миронівська’, ‘МІП Відзнака’, ‘МІП Ассоль’, ‘Естафета миронівська’, ‘МІП Валенсія’.Висновки. Використання різних строків сівби після різних попередників є ефективним підходом організації генотип-середовищних випробувань. Він дає змогу ідентифікувати як специфічно адаптовані до певних умов (попередників та строків сівби) генотипи, так і генотипи з відносно вищим рівнем стабільності за сівби після різних попередників та в різні строки. Такий підхід може бути використаний як на завершальному етапі селекції для диференціювання селекційних ліній за врожайністю та стабільністю, так і під час розроблення базових елементів технології вирощування новостворених сортів. | Purpose. To determine the effectiveness of using contrasting sowing dates after different predecessors to assess the genotypes of bread winter wheat in terms of yield and stability.Methods. Field, laboratory, mathematical statistics.Results. A different, but reliable level of influence on the yield of bread winter wheat genotypes of such factors as conditions of the year of cultivation (66.2%), predecessors (12.5%), sowing date (6.1%) and genotype (1.7% ) was revealed. Significant differences were noted in the response of the studied genotypes to the sowing date after different predecessors. Relatively less influence of the predecessors on the yield of the varieties ‘Estafeta Myronivska’ and ‘Vezha Myronivska’ was revealed, more – for the varieties ‘MIP Darunok’, ‘MIP Kniazhna’ and ‘MIP Vyshyvanka’. The sowing dates had less influence on the yield of the varieties ‘MIP Fortuna’, ‘MIP Vyshyvanka’ and ‘Trudivnytsia Myronivska’. A general tendency for decrease in the average annual yield was established in the experiment with a shift in the sowing dates from September 26 to October 16. However, for the number of genotypes after certain predecessors, the optimal sowing date was the 5th of October: after the predecessor, green-manure fallow – for varieties ‘Trudivnytsia myronivska’, ‘MIP Assol’ and ‘MIP Dniprianka’, after mustard – ‘Vezha Myronivska’, after sunflower – ‘MIP Fortuna’, after corn – ‘MIP Fortuna’ and ‘Podolianka’. In terms of sowing dates, the least variation in yield was found after the predecessors green manure, mustard and corn varieties ‘MIP Vyshyvanka’, ‘Balada Myronivska’, ‘MIP Kniazhna’, ‘Estafeta Myronivska’. Using the GGE biplot, it was found that close to the ‘ideal environment’ for the realization of the yield level of most genotypes was the second sowing date after greenmanure fallow predecessor. For different sowing dates and predecessors, on average for three years, the optimal combination of the level of yield and stability was noted for the varieties ‘Trudivnytsia Myronivska’, ‘MIP Vidznaka’, ‘MIP Assol’, ‘Estafeta Myronivska’, ‘MIP Valensiia’.Conclusions. Thus, the use of different so wing dates after various predecessors is an effective approach to organization of genotype-environmental tests. It makes it possible to identify the genotypes which are specifically adapted to certain conditions (predecessors and sowing dates) and genotypes with a relatively high level of stability when sowing after various predecessors and on different dates. This approach can be used both at the final stage of breeding to differentiate breeding lines for yield and stability, and in the development of basic elements of technology for growing newly created varieties.

Two cercosporoid species are respectively described from Mexican whorled milkweed (Asclepias fascicularis), and spineless safflower (Carthamus tinctorius) from California. Passalora californica represents a new pathogen on Asclepias fascicularis, while Ramularia cynarae is confirmed on Carthamus tinctorius and Cynara cardunculus (Asteraceae), and an epitype designated. Pathogenicity is also established for both pathogens based on Koch's postulate.

Purpose. To reveal the nature of the inheritance of apricot color of the ray flowers of the sunflower and the type of interaction of genes causing different colors. Methods. Field experiment, genetic analysis. The statistical validity of the results was evaluated using Pearson’s criterion. Results. We conducted crosses of the ‘KG13’ line as the source of the sign of apricot color with sunflower lines that had yellow, orange and lemon colors of the ray flowers. In the first generation, from crossing the ‘KG13’ line with five lines, which had a yellow color, only a yellow color of ray flowers was observed. In the second generation, a 3 : 1 split was observed: three-quarters with yellow flowers and one with apricot flowers. Line ‘KG13’ was crossed with three lines (‘HA298’, ‘SL2966’, ‘LD72/3’), which had an orange color of flowers. In the first generation, orange flowers were observed; in the second gene­ration, splitting was recorded: three-quarters of offsprings with orange-colored flowers and one-quarter with apricot flowers. The line ‘KG13’ was crossed with ‘KG107’ and ‘ZL678’, which had lemon-colored flowers. The resulting plants of the first generation had a yellow coloration of ray flowers. In the second generation, five classes of plants by coloration of ray flowers were obtained: yellow, orange, apricot, lemon, lemon-apricot in the ratio 6 : 4 : 3 : 2 : 1. According to these data, the genes of lemon and apricot color have a complementary effect, the homozygous state of orange allele is epistatic to the recessive homozygote of the lemon-colored gene. The ‘KG108’ line with a combination of genes responsible for apricot and light yellow color has its own light apricot color and in crossings with a yellow colored line in the second generation gives splitting in the ratio 9 : 3 : 3 : 1. Conclusions. It was revealed that the apricot color of the ray flowers of the sunflower line ‘KG13’ is due to the homozygous state of the allele of the same gene whose second allele causes an orange color in the lines ‘NA298’, ‘SL2966’ and ‘LD72/3’. The complementary action of alleles responsible for apricot and lemon, as well as apricot and light yellow coloration of ray flowers was determined. A case of epistasis of homozygotes along the allele controlling the orange color over the recessive homozygote of the gene, which is controlled by the lemon color in the crossing combination ‘ZL678’ / ‘KG13’, was revealed.

Цель. Установить характер наследования абрикосовой окраски краевых цветков подсолнечника и типы взаимодействия генов, обусловливающих различные типы окраски. Методы. Полевой опыт, генетический анализ. Статистическую достоверность результатов оценивали с помощью критерия Пирсона. Результаты. Проведено скрещивание линии ‘КГ13’, источника признака абрикосовой окраски, с линиями подсолнечника, которые имеют желтую, оранжевую и лимонную окраску краевых цветков. В первом гибридном поколении от скрещивания ‘КГ13’ с пятью линиями, которые имели желтый цвет, наблюдали только желтую окраску краевых цветков. Во втором гиб­ридном поколении получено расщепление потомков на два класса – с желтой и с абрикосовой окраской цветков, в соотношении 3 : 1. Линия ‘КГ13’ была скрещена с тремя линиями (’НА298’, ‘SL2966’, ‘LD72/3’), которые имели оранжевую окраску цветков. В первом поколении наблюдали оранжевую окраску цветков, во втором – зафиксировано расщепление: три четверти потомков с оранжевой окрас­кой цветков к одной четверти с абрикосовой. Линия ‘КГ13’ была скрещена с ‘КГ107’ и ‘ЗЛ678’, которые имели лимонную окраску цветков. Полученные растения первого поколения имели желтую окраску краевых цветков. Во втором поколении получено пять классов растений по окраске краевых цветков: желтые, оранжевые, абрикосовые, лимонные, лимонно-абрикосовые в соотношении 6 : 4 : 3 : 2 : 1. По этому расщеплению аллели лимонной и абрикосовой окраски имеют комплементарное действие, гомозиготное состояние оранжевого аллеля епистатирует над рецессивной гомозиготой гена лимонной окраски. Линия ‘КГ108’ с сочетанием генов, обусловливающих абрикосовый и светло-желтый цвет, имеет светло-абрикосовую окраску и в скрещиваниях во втором поколении дает расщепление в соотношении 9 : 3 : 3 : 1. Выводы. Абрикосовая окраска краевых цветков линии подсолнечника ‘КГ13’ обусловлена гомозиготным состоянием аллеля того же гена, второй аллель которого вызывает оранжевый цвет у линий ‘НА298’, ‘SL2966’ и ‘LD72/3’. Установлено комплементарное действие аллелей, обусловливающих абрикосовую и лимонную, а также абрикосовую и светло-желтую окраску краевых цветков. Выявлен случай эпистаза гомозиготы по аллелю оранжевого цвета над рецессивным состоянием гена, который вызывает лимонную окраску в комбинации скрещивания ‘ЗЛ678’ / ‘КГ13’. | Мета. Установити характер успадкування абрикосового забарвлення крайових квіток соняшнику та типи взаємодії генів, що зумовлюють різні типи забарвлення. Методи. Польовий дослід, генетичний аналіз. Статистичну достовірність результатів оцінювали за допомогою критерія Пірсона. Результати. Проведено схрещування лінії ‘КГ13’, джерела ознаки абрикосового забарвлення, з лініями соняшнику, які мають жовте, оранжеве та лимонне забарвлення крайових квіток. У першому гібридному поколінні від схрещування ‘КГ13’ із п’ятьма лініями, які мали жовтий колір, спостерігали лише жовте забарвлення крайових квіток. У другому гібридному поколінні отримано розщеплення нащадків на два класи – із жовтим та з абрикосовим забарвленням квіток, у співвідношенні 3 : 1. Лінія ‘КГ13’ була схрещена з трьома лініями (‘НА298’, ‘SL2966’, ‘LD72/3’), які мали оранжеве забарвлення квіток. У першому поколінні спостерігали оранжеве забарвлення квіток, у другому – зафіксовано розщеплення: три чверті нащадків з оранжевим забарвленням квіток до однієї чверті з абрикосовим. Лінія ‘КГ13’ була схрещена з ‘КГ107’ та ‘ЗЛ678’, які мали лимонне забарвлення квіток. Отримані рослини першого покоління мали жовте забарвлення крайових квіток. У другому поколінні отримано п’ять класів рослин за забарвленням крайових квіток: жовті, оранжеві, абрикосові, лимонні, лимонно-абрикосові у співвідношенні 6 : 4 : 3 : 2 : 1. За цим розщепленням алелі лимонного та абрикосового забарвлення мають комплементарну дію, гомозиготний стан оранжевого алеля епістатує над рецесивною гомозиготою гена лимонного забарвлення. Лінія ‘КГ108’ з поєднанням генів, що зумовлюють абрикосовий та світло-жовтий колір, має світло-абрикосове забарвлення і в схрещуваннях у другому поколінні дає розщеплення у співвідношенні 9 : 3 : 3 : 1. Висновки. Абрикосове забарвлення крайових квіток лінії соняшнику ‘КГ13’ зумовлено гомозиготним станом алелю того ж самого гена, другий алель якого спричинює оранжевий колір у ліній ‘НА298’, ‘SL2966’ та ‘LD72/3’. Установлено комплементарну дію алелів, що зумовлюють абрикосове й лимонне, а також абрикосове та світло-жовте забарвлення крайових квіток. Виявлено випадок епістазу гомозиготи за алелем оранжевого забарвлення над рецесивним станом гена, який зумовлює лимонне забарвлення в комбінації схрещування ‘ЗЛ678’ / ‘КГ13’. | Purpose. To reveal the nature of the inheritance of apricot color of the ray flowers of the sunflower and the type of interaction of genes causing different colors. Methods. Field experiment, genetic analysis. The statistical validity of the results was evaluated using Pearson’s criterion. Results. We conducted crosses of the ‘KG13’ line as the source of the sign of apricot color with sunflower lines that had yellow, orange and lemon colors of the ray flowers. In the first generation, from crossing the ‘KG13’ line with five lines, which had a yellow color, only a yellow color of ray flowers was observed. In the second generation, a 3 : 1 split was observed: three-quarters with yellow flowers and one with apricot flowers. Line ‘KG13’ was crossed with three lines (‘HA298’, ‘SL2966’, ‘LD72/3’), which had an orange color of flowers. In the first generation, orange flowers were observed; in the second gene­ration, splitting was recorded: three-quarters of offsprings with orange-colored flowers and one-quarter with apricot flowers. The line ‘KG13’ was crossed with ‘KG107’ and ‘ZL678’, which had lemon-colored flowers. The resulting plants of the first generation had a yellow coloration of ray flowers. In the second generation, five classes of plants by coloration of ray flowers were obtained: yellow, orange, apricot, lemon, lemon-apricot in the ratio 6 : 4 : 3 : 2 : 1. According to these data, the genes of lemon and apricot color have a complementary effect, the homozygous state of orange allele is epistatic to the recessive homozygote of the lemon-colored gene. The ‘KG108’ line with a combination of genes responsible for apricot and light yellow color has its own light apricot color and in crossings with a yellow colored line in the second generation gives splitting in the ratio 9 : 3 : 3 : 1. Conclusions. It was revealed that the apricot color of the ray flowers of the sunflower line ‘KG13’ is due to the homozygous state of the allele of the same gene whose second allele causes an orange color in the lines ‘NA298’, ‘SL2966’ and ‘LD72/3’. The complementary action of alleles responsible for apricot and lemon, as well as apricot and light yellow coloration of ray flowers was determined. A case of epistasis of homozygotes along the allele controlling the orange color over the recessive homozygote of the gene, which is controlled by the lemon color in the crossing combination ‘ZL678’ / ‘KG13’, was revealed.

Purpose. To reveal the nature of the inheritance of apricot color of the ray flowers of the sunflower and the type of interaction of genes causing different colors. Methods. Field experiment, genetic analysis. The statistical validity of the results was evaluated using Pearson’s criterion. Results. We conducted crosses of the ‘KG13’ line as the source of the sign of apricot color with sunflower lines that had yellow, orange and lemon colors of the ray flowers. In the first generation, from crossing the ‘KG13’ line with five lines, which had a yellow color, only a yellow color of ray flowers was observed. In the second generation, a 3 : 1 split was observed: three-quarters with yellow flowers and one with apricot flowers. Line ‘KG13’ was crossed with three lines (‘HA298’, ‘SL2966’, ‘LD72/3’), which had an orange color of flowers. In the first generation, orange flowers were observed; in the second gene­ration, splitting was recorded: three-quarters of offsprings with orange-colored flowers and one-quarter with apricot flowers. The line ‘KG13’ was crossed with ‘KG107’ and ‘ZL678’, which had lemon-colored flowers. The resulting plants of the first generation had a yellow coloration of ray flowers. In the second generation, five classes of plants by coloration of ray flowers were obtained: yellow, orange, apricot, lemon, lemon-apricot in the ratio 6 : 4 : 3 : 2 : 1. According to these data, the genes of lemon and apricot color have a complementary effect, the homozygous state of orange allele is epistatic to the recessive homozygote of the lemon-colored gene. The ‘KG108’ line with a combination of genes responsible for apricot and light yellow color has its own light apricot color and in crossings with a yellow colored line in the second generation gives splitting in the ratio 9 : 3 : 3 : 1. Conclusions. It was revealed that the apricot color of the ray flowers of the sunflower line ‘KG13’ is due to the homozygous state of the allele of the same gene whose second allele causes an orange color in the lines ‘NA298’, ‘SL2966’ and ‘LD72/3’. The complementary action of alleles responsible for apricot and lemon, as well as apricot and light yellow coloration of ray flowers was determined. A case of epistasis of homozygotes along the allele controlling the orange color over the recessive homozygote of the gene, which is controlled by the lemon color in the crossing combination ‘ZL678’ / ‘KG13’, was revealed.

Purpose. To study the effect of AKM plant growth regulator on growth, development and yield formation of sunflower (Helianthus annuus L.) hybrids in hybridization plots under the conditions of the Southern Steppe zone of Ukraine. Methods. Laboratory tests, field study, statistical evaluation. Results. The results of studies devoted to determining the optimal AKM concentration for the treatment of seeds of the maternal and paternal lines, the effect of AKM on field germination, biometric parameters of sunflower plants, seed quality (F1) and yield are presented. Three hybrids of the Ukrainian selection, such as ‘Alpha’, ‘Logos’ and ‘Persei’ were studied during 2014–2016. Optimal concentration of AKM (0.0015 g/l) was defined. The vigor of seeds processed by AKM was higher than in check variety by 0.8–12.8 р.р. (♂); 0.4–10.7 p.p. (♀), laboratory germination – by 2.3–6.1 p.p. (♂); 3.5–6.2 p.p. (♀). In 2016, the sunflower plant height for all variants exceeded this parameter to be obtained for other years of the study. This could be explained by the fact that HTC in 2016 for the BBCH 00–39 period was 1.4 times higher than in 2015. In general, hybrids as the studied factor considerably influenced sunflower yield, and the share of the hybrid (factor A) influence is 33%. This should be considered when selecting hybrids for sunflower cultivation technologies in the Steppe zone of Ukraine. Conclusions. Hydrothermal conditions of the year had the maximum impact on the formation of seed quality and yield of sunflower plants of the hybrids under study, but when using AKM growth regulator for presowing seed treatment, this negative impact was reduced by an average of 23%.

Abstract The genus Phytophthora comprises many economically and ecologically important plant pathogens. Hybrid species have previously been identified in at least six of the 12 phylogenetic clades. These hybrids can potentially infect a wider host range and display enhanced vigour compared to their progenitors. Phytophthora hybrids therefore pose a serious threat to agriculture as well as to natural ecosystems. Early and correct identification of hybrids is therefore essential for adequate plant protection but this is hampered by the limitations of morphological and traditional molecular methods. Identification of hybrids is also important in evolutionary studies as the positioning of hybrids in a phylogenetic tree can lead to suboptimal topologies. To improve the identification of hybrids we have combined genotyping-by-sequencing (GBS) and genome size estimation on a genus-wide collection of 614 Phytophthora isolates. Analyses based on locus- and allele counts and especially on the combination of species-specific loci and genome size estimations allowed us to confirm and characterize 27 previously described hybrid species and discover 16 new hybrid species. Our method was also valuable for species identification at an unprecedented resolution and further allowed correct naming of misidentified isolates. We used both a concatenation- and a coalescent-based phylogenomic method to construct a reliable phylogeny using the GBS data of 140 non-hybrid Phytophthora isolates. Hybrid species were subsequently connected to their progenitors in this phylogenetic tree. In this study we demonstrate the application of two validated techniques (GBS and flow cytometry) for relatively low cost but high resolution identification of hybrids and their phylogenetic relations.

Purpose. To analyze peculiarities of Ukrainian cereals and oilseeds trade, the situation on the world market, and determine future prospects of its development. Methods. Analysis and synthesis, comparative evaluation, graphic procedure. Results. The role and place of Ukraine in a total grain supply to the world market was determined. Ukraine is a world’s top ten grain producer. Among domestic agricultural products, cereals, oilseeds and sunflower oil are in the highest demand in the world. In recent years, our state has reinforced its status as one of the leading exporters of cereals. The commodity pattern of cereals and oilseeds export was analyzed with specifying most in-demand positions and the main countries purchasing these pro­ducts. According to the results of 2015, Ukraine obtained the highest foreign currency revenue from export of corn, wheat and barley (in grain structure) including soybeans and rapeseed (among oil crops). Key domestic and multinational operators are the main exporters of cereals and oilseeds in Ukraine and still hold their leading position. It was found a significant excess of import price of seeds as compared with export price of crops grown in Ukraine. Assortment of maize and sunflower seeds offered by major companies-producers in Ukraine was studied. Main trends of the world grain market development are considered. Conclusions. It was established that Ukraine is one of the major exporters of cereals and oilseeds. However, volatility of their prices significantly affects the export revenue that was decreasing even with increasing export quantities in kind. The dependence of domestic grain industry development on high-quality imported seed of maize and sunflower hybrids was recorded. It is expected that in the years to come Ukraine will maintain its strong positions in the world’s grain market.

Purpose. To analyze peculiarities of Ukrainian cereals and oilseeds trade, the situation on the world market, and determine future prospects of its development. Methods. Analysis and synthesis, comparative evaluation, graphic procedure. Results. The role and place of Ukraine in a total grain supply to the world market was determined. Ukraine is a world’s top ten grain producer. Among domestic agricultural products, cereals, oilseeds and sunflower oil are in the highest demand in the world. In recent years, our state has reinforced its status as one of the leading exporters of cereals. The commodity pattern of cereals and oilseeds export was analyzed with specifying most in-demand positions and the main countries purchasing these pro­ducts. According to the results of 2015, Ukraine obtained the highest foreign currency revenue from export of corn, wheat and barley (in grain structure) including soybeans and rapeseed (among oil crops). Key domestic and multinational operators are the main exporters of cereals and oilseeds in Ukraine and still hold their leading position. It was found a significant excess of import price of seeds as compared with export price of crops grown in Ukraine. Assortment of maize and sunflower seeds offered by major companies-producers in Ukraine was studied. Main trends of the world grain market development are considered. Conclusions. It was established that Ukraine is one of the major exporters of cereals and oilseeds. However, volatility of their prices significantly affects the export revenue that was decreasing even with increasing export quantities in kind. The dependence of domestic grain industry development on high-quality imported seed of maize and sunflower hybrids was recorded. It is expected that in the years to come Ukraine will maintain its strong positions in the world’s grain market.