Race-specific resistance of 19 common millet varieties that are firstly listed on the State Register of Plant Varieties Suitable for Dissemination in Ukraine in 2013 is assessed. It is found that almost half of the varieties are infected with all smut races, part of them is resistant only to the first group of smut races, and there is no variety to be resistant to all races of this disease. It is concluded that common millet varieties are needed to be examined for resistance to smut races

Race-specific resistance of 19 common millet varieties that are firstly listed on the State Register of Plant Varieties Suitable for Dissemination in Ukraine in 2013 is assessed. It is found that almost half of the varieties are infected with all smut races, part of them is resistant only to the first group of smut races, and there is no variety to be resistant to all races of this disease. It is concluded that common millet varieties are needed to be examined for resistance to smut races

State and prospects of growing for Triticale crop at the territory of leading states of the world are highlighted across space and time. Observing the trend of changes in planting acreage and the product yield of wheat and rye hybrids, their popularity in agrarian and industrial fields of a whole range of countries in Asia, Northern and Southern America, Australia, a Ukrainian manufacturer is invited to consider and reasonably assess this crop and thus list in the composition of planted acreage the national nowadays varieties of triticale as an essential or strategic system component.

State and prospects of growing for Triticale crop at the territory of leading states of the world are highlighted across space and time. Observing the trend of changes in planting acreage and the product yield of wheat and rye hybrids, their popularity in agrarian and industrial fields of a whole range of countries in Asia, Northern and Southern America, Australia, a Ukrainian manufacturer is invited to consider and reasonably assess this crop and thus list in the composition of planted acreage the national nowadays varieties of triticale as an essential or strategic system component.

The kernel size of winter rye is a genetically determined characteristic as controlled by a series of multiple alleles and is available for artificial selection. As a result of long-term intensive selection average weight of 100 grains per plant increased from 2.94 to 6.94 g or 2.4 times. The implemented effectiveness of selection by 100 grains weight per plant towards increase was systemic, but it was also uneven. Throughout 42 generations the spans of quick response to directed selection were observed, lasting slowdowns and even reverses of average weight of 100 grains per plant. Prompt increase of the directed selection efficiency corresponded to the changes that induced relatively big impact, and formed a plateau as large kernel size reached high frequency. Variability of rye population at high pressure of the selection by 100 grains weight pert plant occurred predominately at normal distribution and along the display of negative asymmetry following the effect of extreme grades emergence outbreak. The highest average kernel size achieved was followed by further slowdown of 100 grains increase observed, nonetheless a heavy pressure of the selection. 42 generations displayed the greatest impact upon the breeding efficiency by denominated breeding differential (36%), selection intensity (22%), broad sense inheritance ratio (8%), narrow sense inheritance ratio (10%). Predicted and implemented selection efficiency over 42 generations matched in 37% of cases certifying thus an actual forecast of the breeding prediction.

The kernel size of winter rye is a genetically determined characteristic as controlled by a series of multiple alleles and is available for artificial selection. As a result of long-term intensive selection average weight of 100 grains per plant increased from 2.94 to 6.94 g or 2.4 times. The implemented effectiveness of selection by 100 grains weight per plant towards increase was systemic, but it was also uneven. Throughout 42 generations the spans of quick response to directed selection were observed, lasting slowdowns and even reverses of average weight of 100 grains per plant. Prompt increase of the directed selection efficiency corresponded to the changes that induced relatively big impact, and formed a plateau as large kernel size reached high frequency. Variability of rye population at high pressure of the selection by 100 grains weight pert plant occurred predominately at normal distribution and along the display of negative asymmetry following the effect of extreme grades emergence outbreak. The highest average kernel size achieved was followed by further slowdown of 100 grains increase observed, nonetheless a heavy pressure of the selection. 42 generations displayed the greatest impact upon the breeding efficiency by denominated breeding differential (36%), selection intensity (22%), broad sense inheritance ratio (8%), narrow sense inheritance ratio (10%). Predicted and implemented selection efficiency over 42 generations matched in 37% of cases certifying thus an actual forecast of the breeding prediction.

In 2011 to 2013 a study was completed for the impact of varying rates of fertilizing onto the indices of productivity for barley agrophytocenosis of Helios and Commandor, in particular, such its components as a number of productive stems, number of seeds per ear, potential biological activity of ear and photosynthetic apparatus. It is found that the level of spring barley agrophytocenosis productivity is subject both to varietal peculiarities and the rate of mineral fertilizer application. When applying N 60P 60K 60 і N 90P 90K 90 the highest potential and biological productivity of Helios and Commandor was recorder as compared against the control. Impact of varying application rates for fertilizers onto the components of ear biological productivity has been scrutinized. The qualitative composition of ear is a clear expression of variety phenotype and identifies the level of biological yield for spring barley. Application of N 60 P 60 K 60 і N 90 P 90 K 90 mineral fertilizers fairly increased the average leaf surface, photosynthetic lead capacity of varieties in 2 to 2.5 times, as well as FAR efficiency coefficient in 1.5 to 2.0 times as against control that thus contributed to the development of highest biological yield of Helios variety phytomass at the level of 14.9 to 15.0, grain – 7.8 to 8.0 ton per ha and, respectively, 12.7 and 7.5 tons per ha for Comandor variety.

In 2011 to 2013 a study was completed for the impact of varying rates of fertilizing onto the indices of productivity for barley agrophytocenosis of Helios and Commandor, in particular, such its components as a number of productive stems, number of seeds per ear, potential biological activity of ear and photosynthetic apparatus. It is found that the level of spring barley agrophytocenosis productivity is subject both to varietal peculiarities and the rate of mineral fertilizer application. When applying N 60P 60K 60 і N 90P 90K 90 the highest potential and biological productivity of Helios and Commandor was recorder as compared against the control. Impact of varying application rates for fertilizers onto the components of ear biological productivity has been scrutinized. The qualitative composition of ear is a clear expression of variety phenotype and identifies the level of biological yield for spring barley. Application of N 60 P 60 K 60 і N 90 P 90 K 90 mineral fertilizers fairly increased the average leaf surface, photosynthetic lead capacity of varieties in 2 to 2.5 times, as well as FAR efficiency coefficient in 1.5 to 2.0 times as against control that thus contributed to the development of highest biological yield of Helios variety phytomass at the level of 14.9 to 15.0, grain – 7.8 to 8.0 ton per ha and, respectively, 12.7 and 7.5 tons per ha for Comandor variety.

Purpose. To study the influence of steppe and forest-steppe climatic conditions on the yield, oil content in seeds and fatty acid composition of oil in new sunflower varieties of high oleic and oilseed use. Methods. The research was conducted in accordance with “Methods of qualification examination of plant varieties for their suitability for distribution in Ukraine (general part)” and “Methods of qualification examination of plant varieties for their suitability for distribution. Methods of determining quality indicators of plant production”. The following methods were used in the research: laboratory, comparison, generalisation, mathematical statistics, analysis and synthesis to draw conclusions. Results. The fatty acid composition of the seeds of new varieties of sunflower (Helianthus annuus L.) of high oleic and oilseed use, grown in different soil and climatic conditions, was studied. According to the results of the analysis in the steppe zone, the variety ‘LG50648’ has the highest economic and value characteristics: oil content (51,0%), oleic acid (85.1%), yield (3.11 t/ha); varieties ‘SULIANO’ and ‘MAS 908HOCP’ – yield (3.40 and 3.91 t/ha) and oleic acid content (85.8 and 86.1%) regardless of the gro­wing conditions. It was found that high oleic sunflower varieties ‘MAS 908HOCP’, ‘LG50648’, ‘SULIANO’ grown under steppe and forest-steppe conditions yielded higher quality oil. The maximum content of oleic acid in 2022–2023 was characteristic of the seeds of the varieties ‘MAS 908HOCP’ (86.1% in the steppe and 85.8% in the forest steppe) and ‘SULIANO’. The hi­ghest linoleic acid content was obtained in the seeds of the oilseed use varieties ‘STK104’ (62.9% in the steppe and 58.5% in the forest steppe) and ‘STK103’ (61.2% in the forest steppe). Among the high oleic varieties, the best results were obtained with ‘LG50648’ (5.7% in the steppe and 5.9% in the forest steppe). Conclusions. Oil content of sunflower varieties and fatty acid composition are determined by varietal characteristics of sunflower and environmental conditions. Modern sunflower varieties, which are included in the State Register of Plant Varieties of Ukraine, have high yield potential and can provide a large yield of vegetable oil per unit area. Agroclimatic conditions have different effects on the gross seed yield and oil quality in the conditions of the forest steppe and steppe of Ukraine. | Мета. Вивчити вплив кліматичних умов Степу та Лісостепу на врожайність, жирнокислотний склад олії та її вміст у насінні нових сортів соняшнику однорічного високоолеїнового та олійного напрямів використання. Методи. Дослідження виконували відповідно до «Методики проведення кваліфікаційної експертизи сортів рослин на придатність до поширення в Україні (Загальна частина)» та «Методики проведення кваліфікаційної експертизи сортів рослин на придатність до поширення. Методи визначення показників якості продукції рослинництва». Використовували такі методи: лабораторний, порівняння, узагальнення, математичної статистики, аналізу та синтезу для підготовки висновків. Результати. Проаналізовано жирнокислотний склад насіння нових сортів соняшнику однорічного (Helianthus annuus L.) високоолеїнового та олійного напрямів використання, вирощених у різних ґрунтово-кліматичних умовах. Зокрема, у зоні Степу найліпші результати за господарсько-цінними ознаками продемонстрував сорт ‘LG50648’: вміст олії – 51,0%, олеїнової кислоти – 85,1%, урожайність – 3,11 т/га. ‘SULIANO’ та ‘MAS 908HOCP’ незалежно від умов вирощування характеризувалися високими врожаями (3,40 і 3,91 т/га) та вмістом олеїнової кислоти (85,8 і 86,1%). Олія була більш якісною у високоолеїнових сортів ‘MAS 908HOCP’, ‘LG50648’ і ‘SULIANO’. Максимальний вміст олеїнової кислоти впродовж 2022–2023 рр. фіксували в насінні сортів ‘MAS 908HOCP’ (86,1% у Степу) та ‘SULIANO’ (85,8% у Лісостепу). Найвищі результати за вмістом лінолевої кислоти серед сортів олійного напряму використання продемонстрували ‘STK104’ (62,9% у Степу та 58,5% у Лісостепу) та ‘STK103’ (61,2% у Лісостепу); високоолеїнового напряму – ‘LG50648’ (5,7% у Степу та 5,9% у Лісостепу). Висновки. Олійність і жирнокислотний склад визначаються сортовими особливостями соняшнику та умовами навколишнього середовища. Сучасні сорти соняшнику, внесені до Державного Реєстру сортів рослин України, мають великий потенціал урожайності та здатні забезпечити значний збір олії з одиниці площі. Агрокліматичні умови по-різному впливають на валовий збір насіння та якість олії в умовах Лісостепу та Степу України.

When creating Triticum aestivum L. varieties in V. M. Remeslo Myronivka Institute of Wheat, intervarietal crossing was used as the basis for classical method of hybridization. Parental pairs were selected according to environmental and geographical principles. Crossing of lines selected by certain adaptive characteristics among themselves and with the local breeding varieties are widely used. The method of induced mutagenesis is one of the main factor of the evolutionary process which increases hundreds of times the frequency of altered forms occurrence. Thermal mutagenesis – selection of winter forms from spring varieties – is based on low temperature effect on spring wheat varieties (it was developed by V. M. Remeslo, the member of the Academy of Sciences). Method of intervarietal selection in winter wheat breeding provides creation of new varieties of this crop through mass selection of the best plants from local populations. At present, 10 varieties of winter wheat are included into the State Register of Plant Varieties Suitable for Dissemination in Ukraine, one variety – into the State Register of Breeding Achievements of the Russian Federation, seven varieties are passing state quality testing in these countries.

When creating Triticum aestivum L. varieties in V. M. Remeslo Myronivka Institute of Wheat, intervarietal crossing was used as the basis for classical method of hybridization. Parental pairs were selected according to environmental and geographical principles. Crossing of lines selected by certain adaptive characteristics among themselves and with the local breeding varieties are widely used. The method of induced mutagenesis is one of the main factor of the evolutionary process which increases hundreds of times the frequency of altered forms occurrence. Thermal mutagenesis – selection of winter forms from spring varieties – is based on low temperature effect on spring wheat varieties (it was developed by V. M. Remeslo, the member of the Academy of Sciences). Method of intervarietal selection in winter wheat breeding provides creation of new varieties of this crop through mass selection of the best plants from local populations. At present, 10 varieties of winter wheat are included into the State Register of Plant Varieties Suitable for Dissemination in Ukraine, one variety – into the State Register of Breeding Achievements of the Russian Federation, seven varieties are passing state quality testing in these countries.

There are allocated some forms of distant hybrids with weak degree of fungal diseases lesion (Taphrina deformans (Berk.) Tul., Sphaerotheca pannosa (Lev.) var. persicae Woron., Clasterosporium carpophilum Aderh., Monilia cinerea Bonord. и Monilia fructigena Fr.) that are of practical interest for breeding such cultivars of peach and nectarine that will resist these pathogens.

There are allocated some forms of distant hybrids with weak degree of fungal diseases lesion (Taphrina deformans (Berk.) Tul., Sphaerotheca pannosa (Lev.) var. persicae Woron., Clasterosporium carpophilum Aderh., Monilia cinerea Bonord. и Monilia fructigena Fr.) that are of practical interest for breeding such cultivars of peach and nectarine that will resist these pathogens.

The effect of sowing time on realization of the natural productivity potential of modern soft winter wheat varieties was studied. It is established that the use of current agricultural technologies in a context of climate change has caused shift of calendar sowing terms to the second half of the optimal terms comparing with earlier cultivated varieties. In subzones of Kirovohrad and Bila Tserkva state variety testing stations the highest yield of winter wheat is formed in case of sowing on September 20–30, but the optimum for Kirovohrad station fall on September 30, Bila Tserkva station – on September 20 and 30. Sowing in earlier or later time leads to decreasing yields, especially of Vynnychanka, Smuhlyanka, Zolotokolosa and Tripilska varieties. Bogdana and Kuialnyk varieties are the most adaptive to sowing time under agroecological conditions of Kirovohrad state variety testing station.

The effect of sowing time on realization of the natural productivity potential of modern soft winter wheat varieties was studied. It is established that the use of current agricultural technologies in a context of climate change has caused shift of calendar sowing terms to the second half of the optimal terms comparing with earlier cultivated varieties. In subzones of Kirovohrad and Bila Tserkva state variety testing stations the highest yield of winter wheat is formed in case of sowing on September 20–30, but the optimum for Kirovohrad station fall on September 30, Bila Tserkva station – on September 20 and 30. Sowing in earlier or later time leads to decreasing yields, especially of Vynnychanka, Smuhlyanka, Zolotokolosa and Tripilska varieties. Bogdana and Kuialnyk varieties are the most adaptive to sowing time under agroecological conditions of Kirovohrad state variety testing station.