Мета. Встановити оптимальні строки проведення збиральних робіт у розсадниках первинного насінництва люпину білого. Методи. Використано польові, лабораторні та статистичні методи оцінки матеріалу. Посівні якості вивчали в лабораторних умовах окремо для насіння із центральних і бічних китиць згідно з ДСТУ 2240-93. Результати. Наведено результати досліджень для визначення оптимальних строків проведення збиральних робіт у розсадниках первинного насінництва. Дослідження проводили окремо для насіння з центральної і бічних китиць, зібраного в різні фази стиглості. Встановлено, що енергія проростання насіння першого строку збирання була мінімальною і становила по сортах для центральної китиці від 70,0 до 73,0% і від 58,0 до 65,0% – для бічних китиць. Найкращі показники енергії проростання і схожості виявлено у насіння центральних китиць, зібраного у фазу «жовті сім’ядолі». Вони становили в середньому по всіх сортах 90,8 і 94,3% відповідно, тоді як у насіння бічних китиць ці показники були на рівні 84,5 і 89,3%. На формування маси 1000 насінин впливали агрометеорологічні умови. В посушливі роки на рослинах сформувалося щупле й легковаге насіння, тому погіршилась його посівна якість. Найбільшу масу 1000 насінин отримано у фазі «повна стиглість», коли вона досягала у центральної китиці від 284 до 338 г, а в бічних – від 266 до 316 г. Проведено оцінку розвитку зародкових корінців: зовнішній вигляд, довжина. Візуальна оцінка насіння на третю добу пророщування та вимірювання дов­жини зародкових корінчиків на сьому добу свідчить, що здорові, добре розвинені проростки спостерігалися в насіння п’ятого і шостого строків збирання. Висновки. Найвищі посівні якості у більшості сортів з урахуванням бічних китиць встановлено в насіння, зібраного у фазу і повної стиглості. Насіння центральної китиці за схожістю відповідає вимогам ДСТУ для добазової категорії (87,0%), починаючи вже з фази «початок пожовтіння корінчика зародка», але насіння бічних китиць – не раніше фази «жовті сім’ядолі». Збиральні роботи необхідно розпочинати у фазі стиглості насіння люпину «жовті сім’ядолі», коли воно є повноцінно сформованим і має високі посівні якості.

Мета. Встановити оптимальні строки проведення збиральних робіт у розсадниках первинного насінництва люпину білого. Методи. Використано польові, лабораторні та статистичні методи оцінки матеріалу. Посівні якості вивчали в лабораторних умовах окремо для насіння із центральних і бічних китиць згідно з ДСТУ 2240-93.Результати. Наведено результати досліджень для визначення оптимальних строків проведення збиральних робіт у розсадниках первинного насінництва. Дослідження проводили окремо для насіння з центральної і бічних китиць, зібраного в різні фази стиглості. Встановлено, що енергія проростання насіння першого строку збирання була мінімальною і становила по сортах для центральної китиці від 70,0 до 73,0% і від 58,0 до 65,0% – для бічних китиць. Найкращі показники енергії проростання і схожості виявлено у насіння центральних китиць, зібраного у фазу «жовті сім’ядолі». Вони становили в середньому по всіх сортах 90,8 і 94,3% відповідно, тоді як у насіння бічних китиць ці показники були на рівні 84,5 і 89,3%. На формування маси 1000 насінин впливали агрометеорологічні умови. В посушливі роки на рослинах сформувалося щупле й легковаге насіння, тому погіршилась його посівна якість. Найбільшу масу 1000 насінин отримано у фазі «повна стиглість», коли вона досягала у центральної китиці від 284 до 338 г, а в бічних – від 266 до 316 г. Проведено оцінку розвитку зародкових корінців: зовнішній вигляд, довжина. Візуальна оцінка насіння на третю добу пророщування та вимірювання дов­жини зародкових корінчиків на сьому добу свідчить, що здорові, добре розвинені проростки спостерігалися в насіння п’ятого і шостого строків збирання.Висновки. Найвищі посівні якості у більшості сортів з урахуванням бічних китиць встановлено в насіння, зібраного у фазу і повної стиглості. Насіння центральної китиці за схожістю відповідає вимогам ДСТУ для добазової категорії (87,0%), починаючи вже з фази «початок пожовтіння корінчика зародка», але насіння бічних китиць – не раніше фази «жовті сім’ядолі». Збиральні роботи необхідно розпочинати у фазі стиглості насіння люпину «жовті сім’ядолі», коли воно є повноцінно сформованим і має високі посівні якості. | Purpose. To determine the optimal time for harvesting in nurseries of primary seed production of white lupine. Methods. Field, laboratory and statistical methods of material evaluation were used. Sowing qualities were studied in the laboratory separately for seeds from the central and lateral racemes in accordance with DSTU 2240-93 (State Standard of Ukraine).Results. The results of studies on determination of optimal terms for harvesting in nurseries of primary seed production are given. The studies were conducted separately for seeds from the central and lateral racemes collected in different ripe stages. It was established that the seed vigor during the first harves­ting time was minimal and ranging for varieties from 70.0 to 73.0% for the central raceme and from 58.0 to 65.0% for the lateral racemes. The best indices of seed vigor and germination capacity were established in the seeds of the central racemes harvested during the “yellow cotyledon” stage. They averaged 90.8 and 94.3% respectively for all varieties, while in the seeds of the lateral racemes these indices amounted to 84.5 and 89.3%. Agrometeorological conditions had influence on the thousand-kernel weight formation. In dry years, plants produced feeble and lightweight seeds, so their sowing qualities has been deteriorated. The highest thousand-kernel weight was obtained in the “full ripeness” stage, when it ranging from 284 to 338 g in the central racemes and from 266 to 316 in the lateral ones. The development of embryonic roots including external appearance, length was assessed. Visual assessment of germination on the third day and measurement of the length of embryonic roots on the seventh day showed that healthy, well-developed seedlings were observed in seeds of the fifth and sixth harvesting periods. Conclusions. The highest sowing qualities in most varieties with regard to lateral racemes were established in the seeds harvested in the «full ripeness» phase. For the germinating capacity, seeds of the central raceme met the requirements of DSTU for the additional category (87.0%), starting from the stage “beginning of the embryonic root yellowing”, but seeds of the lateral racemes not earlier than the phase of “yellow cotyledons”. Harvesting should be started at the “yellow cotyledons” phase of lupine seeds maturity when they were fully formed and have high sowing qualities. | Цель. Установить оптимальные сроки проведения уборочных работ в питомниках первичного семеноводства люпина белого.Методы. Использованы полевые, лабораторные и статистические методы оценки материала. Посевные качества изучали в лабораторных условиях отдельно для семян с центральных и боковых кистей в соответствии с ГСТУ 2240-93. Результаты. Приведены результаты исследований для определения оптимальных сроков проведения уборочных работ в питомниках первичного семеноводства. Исследования проводили отдельно для семян из центральной и боковых кистей, собранных в разные фазы зрелости. Установлено, что энергия прорастания семян первого срока уборки была минимальной и составляла по сортам для центральной кисти от 70,0 до 73,0% и от 58,0 до 65,0% – для боковых кистей. Лучшие показатели энергии прорастания и всхожести выявлены у семян центральных кистей, собранных в фазе «желтые семядоли». Они составляли в среднем по всем сортам соответственно 90,8 и 94,3%, в то время как у семян боковых кистей данные показатели были на уровне 84,5 и 89,3%. На формирование массы 1000 семян влияли агрометеорологические условия. В засушливые годы на растениях сформировались щуплые и легковесные семена, поэтому ухудшились их посевные качества. Наибольшая масса 1000 семян получена в фазе «полная спелость», когда она достигала у центральной кисти от 284 до 338 г, а в боковых – от 266 до 316 г. Проведена оценка развития зародышевых корешков: внешний вид, длина. Визуальная оценка семян на третий день проращивания и измерение длины зародышевых корешков на седьмой день показали, что здоровые, хорошо развитые проростки наблюдаются у семян пятого и шестого сроков уборки.Выводы. Наиболее высокие посевные качества у большинства сортов с учетом боковых кистей установлены в семенах, собранных в фазе полной спелости. Семена центральной кисти по всхожести соответствуют требованиям ГСТУ для добазовой категории (87,0%), начиная уже с фазы «начало пожелтения корешков зародыша», но семена с боковых кистей – не ранее фазы «желтые семядоли». Уборочные работы следует начинать в фазе спелости семян люпина «желтые семядоли», когда они полноценно сформированы и имеют высокие посевные качества.

Purpose. To study the effect of weather conditions on grain quality in soft spring wheat lines that are undergoing competitive variety trial. To identify indices to be least affected by weather conditions. To investigate the correlation dependence between grain quality indices in the years with contrasting weather conditions and conduct the analysis of variance. Methods. Parameters of grain and flour quality of bread spring wheat lines were determined using conventional methods at the laboratory of grain quality of V. M. Remeslo Myronivka Institute of Wheat, NAAS of Ukraine, protein content in flour was measured with the use of the SPECTRAN 119M device. Results. Contrasting weather conditions were considered including arid ones (2013) – that had negative effect on 1000 kernel weight, but at the same time positively influenced the averaged grain quality indices; with excess humidity (2014) – they resulted in decreasing of all technological indices; optimal ones (2015) – allowed to obtain maximum indices of grain and flour quality. Paired coefficients of correlation between different para­meters of grain and flour quality were calculated. The most number of strong and medium correlations was found in a dry year (33.3%), the smallest one – in a wet year (13.0%). Such indices as flour strength, dough dilution and protein content depended on the conditions of the growing year least of all. Grain-unit response was the most considerable to the humid conditions of the year. The analysis of variance showed that climatic conditions had significant effect on the quality indices of grain and flour. At the same time, an important genotypic component was revealed in indices of dough resilience (63%), bread volume and rating (61 and 53% respectively), the flour strength (42%), crude gluten quality (33%), bread porosity (30%). With climate variations, the genotypic conditionality of the content of protein and especially crude gluten was expressed insignificantly. Conclusions. When creating high quality cultivars, plant breeders should be guided by such indices as flour strength, dough resilience, gluten quality, bread volume and rating as only they are more genetically determined

Purpose. To study the effect of weather conditions on grain quality in soft spring wheat lines that are undergoing competitive variety trial. To identify indices to be least affected by weather conditions. To investigate the correlation dependence between grain quality indices in the years with contrasting weather conditions and conduct the analysis of variance. Methods. Parameters of grain and flour quality of bread spring wheat lines were determined using conventional methods at the laboratory of grain quality of V. M. Remeslo Myronivka Institute of Wheat, NAAS of Ukraine, protein content in flour was measured with the use of the SPECTRAN 119M device. Results. Contrasting weather conditions were considered including arid ones (2013) – that had negative effect on 1000 kernel weight, but at the same time positively influenced the averaged grain quality indices; with excess humidity (2014) – they resulted in decreasing of all technological indices; optimal ones (2015) – allowed to obtain maximum indices of grain and flour quality. Paired coefficients of correlation between different para­meters of grain and flour quality were calculated. The most number of strong and medium correlations was found in a dry year (33.3%), the smallest one – in a wet year (13.0%). Such indices as flour strength, dough dilution and protein content depended on the conditions of the growing year least of all. Grain-unit response was the most considerable to the humid conditions of the year. The analysis of variance showed that climatic conditions had significant effect on the quality indices of grain and flour. At the same time, an important genotypic component was revealed in indices of dough resilience (63%), bread volume and rating (61 and 53% respectively), the flour strength (42%), crude gluten quality (33%), bread porosity (30%). With climate variations, the genotypic conditionality of the content of protein and especially crude gluten was expressed insignificantly. Conclusions. When creating high quality cultivars, plant breeders should be guided by such indices as flour strength, dough resilience, gluten quality, bread volume and rating as only they are more genetically determined

Purpose. To identify and describe the basic criteria for studying and assessing decorative and economic-and-biological characters of the genus Heuchera L. varieties in the context of introduction. Methods. Introduction procedure, analytical approach, morphological analysis and biometric data evaluation. Results. Aided by the comparative morphological analysis of introduced varieties of the genus Heuchera, significant differences in their characters were revealed, including plant height, height and width of the basal rosette of leaves, generative shoot height. There was a significant variation of such parameters as the number of generative shoots within one plant, the number of flowers on a single generative shoot, flowering abundance. Based on investigation findings, 17 groups of varieties were identified for the dominant color of adaxial surface of the leaf blade and 7 groups – for inflorescence color. According to phenological observations, Heuchera varieties groups were determined and the dates of commencement and duration of plants flowering were registered in the context of introduction. The results of these investigations are the necessary basis for the study and evaluation of this culture assortment, they are important in breeding and landscaping. Conclusions. Based on the results of investigations of morphological features of introduced species of the genus Heuchera, traits and parameters for varieties grouping were defined as well as decorative and economic-and-biological traits that should be evaluated.

Purpose. To identify and describe the basic criteria for studying and assessing decorative and economic-and-biological characters of the genus Heuchera L. varieties in the context of introduction. Methods. Introduction procedure, analytical approach, morphological analysis and biometric data evaluation. Results. Aided by the comparative morphological analysis of introduced varieties of the genus Heuchera, significant differences in their characters were revealed, including plant height, height and width of the basal rosette of leaves, generative shoot height. There was a significant variation of such parameters as the number of generative shoots within one plant, the number of flowers on a single generative shoot, flowering abundance. Based on investigation findings, 17 groups of varieties were identified for the dominant color of adaxial surface of the leaf blade and 7 groups – for inflorescence color. According to phenological observations, Heuchera varieties groups were determined and the dates of commencement and duration of plants flowering were registered in the context of introduction. The results of these investigations are the necessary basis for the study and evaluation of this culture assortment, they are important in breeding and landscaping. Conclusions. Based on the results of investigations of morphological features of introduced species of the genus Heuchera, traits and parameters for varieties grouping were defined as well as decorative and economic-and-biological traits that should be evaluated.

Purpose. To evaluate the stability and plasticity of new varieties of grain sorghum in ecological conditions of the Fores-Steppe and Steppe zone of Ukraine. Methods. Field study, statistical evaluation. Results. It was found that in Ukraine the average yield of grain sorghum in 2015 was 3.72 t/ha and in 2016 – 3.36 t/ha. In field experiments during 2009–2016, ‘Praim’ and ‘Sprynt 2’ hybrids appeared to be significantly better as compared to averaged yields of 3.9 t/ha. Evaluation of yield plasticity in environmental conditions of the Forest-Steppe and Steppe zones showed that the hybrid ‘Praim’ did not differ from the group standard and its index is no more than one. At the same time, the ‘Sprynt 2’ is highly-plastic hybrid and ‘Dniprovskyi 39’ belongs to relatively low-plastic varieties. Conclusions. It was established that, as an average of an experiment, hyb­rids of grain sorghum ‘Praim’ and ‘Sprynt 2’ had a yield of 4,2–4,3 t/ha. According to the analysis of ecological plasticity, ‘Sprynt 2’ can be included with the intensive type and ‘Dniprovskyi 39’ – with relatively low-plastic varieties. It was found that proper selection of varieties and far­ming practices of cultivation is one of the main factors that favors high yields and respectively determine 37% and 34% of the level of grain sorghum productivity.

Purpose. To evaluate the stability and plasticity of new varieties of grain sorghum in ecological conditions of the Fores-Steppe and Steppe zone of Ukraine. Methods. Field study, statistical evaluation. Results. It was found that in Ukraine the average yield of grain sorghum in 2015 was 3.72 t/ha and in 2016 – 3.36 t/ha. In field experiments during 2009–2016, ‘Praim’ and ‘Sprynt 2’ hybrids appeared to be significantly better as compared to averaged yields of 3.9 t/ha. Evaluation of yield plasticity in environmental conditions of the Forest-Steppe and Steppe zones showed that the hybrid ‘Praim’ did not differ from the group standard and its index is no more than one. At the same time, the ‘Sprynt 2’ is highly-plastic hybrid and ‘Dniprovskyi 39’ belongs to relatively low-plastic varieties. Conclusions. It was established that, as an average of an experiment, hyb­rids of grain sorghum ‘Praim’ and ‘Sprynt 2’ had a yield of 4,2–4,3 t/ha. According to the analysis of ecological plasticity, ‘Sprynt 2’ can be included with the intensive type and ‘Dniprovskyi 39’ – with relatively low-plastic varieties. It was found that proper selection of varieties and far­ming practices of cultivation is one of the main factors that favors high yields and respectively determine 37% and 34% of the level of grain sorghum productivity.

Рurpose. To investigate inheritance of “plant height” trait in populations of the first (F1) and second (F2) generations of the soybean (Glucine max (L.) Merrill) and evaluate hybrid combinations in order to identify phenotypes with the highest level of heterosis for plant height. Methods. Laboratory test, mathematical and statistical analysis. Results. The inheritance of plant height in soybean was investigated. Hybrid combinations were assessed for the ability to select phenotypes with an optimal height. Different types of inheritance of this trait were found in populations of the second generation. The highest degree of heterosis for plant height was expressed by such soybean hybrids of the second generation as ‘АЕЕМ ’/‘Cherniatka’ (102.6%), next were ‘№ 427/‘Коrado’ (36,1%) and ‘Yelena’/‘Vizhion’ (32,0%). For the above trait, the ‘Legend’ variety in combinations with such varieties as ‘Staroukrainka’, ‘Korado’ and ‘Medeia’ expressed a heterosis amounting to 28.1%, 8.3%, 6.1% accordingly. Plant height was inherited mainly in terms of negative overdominance (34.2% combinations). There were 21.1% of combinations that had a negative semidominance. Conclusions. Among large majority of crossing combinations, forms were revealed that differed greatly for the plant height. The highest variability was observed in combinations such as ‘Legenda’/‘Korado’, ‘Ustia’/‘Vizjion’, ‘№894’/‘Vizjion’, ‘Ug-30’/‘Vizjion’, ‘Legenda’/‘Annushka’, ‘№441’/‘Gentleman’, ‘№441’/‘Vizjion’, ‘Yug-30’/‘Gentleman’, ‘Angelica’/‘Annushka’ and ‘Angelica’/‘Gentleman.

Мета. Суперсолодка кукурудза містить ген, експресія якого зумовлює підвищення концентрації цукру. Ідентифіковано гени ендосперму, що регулюють підвищення вмісту цукру і зменшення вмісту крохмалю; найефективнішими з них були shrunken2 (sh2), brittle1 (bt), sugary1 (su1) і sugary enhancer1 (se). Рецесивна мутація shrunken2 (sh2) забезпечує високий уміст цукрів у зерні молочно-воскової стиглості порівняно з іншими мутантними формами, що безпосередньо впливає на смакові якості sh2-гібридів, обумовлює широке використання цієї мутації в селекційній роботі і має найбільший комерційний потенціал. Основним завданням селекції є створення нового покоління високопродуктивних гібридів, яке залежить від наявності високоякісного вихідного селекційного матеріалу. Тому метою роботи було оцінити лінії суперсолодкої кукурудзи за морфо-біологічними ознаками, виділити ліпші лінії-донори генетичних ознак, створити високопродуктивні гібриди кукурудзи.Методи. Морфо-біологічні ознаки досліджених ліній оцінювали за Класифікатором-довідником виду Zea mays L. Комплексний аналіз зразків за господарсько-цінними ознаками проводили згідно з Методичними рекомендаціями для польового та лабораторного вивчення генетичних ресурсів кукурудзи. Уміст редукувальних цукрів у зерні досліджених ліній і гібридів кукурудзи визначали за методом Бертрана.Результати. Досліджено морфо-біологічні ознаки суперсолодкої кукурудзи. Істотні відмінності між дослідженими лініями спостережено за тривалістю вегетаційного періоду, кількістю насінин в одному ряді й кількістю рядів зерен у качані. Виділено лінії-джерела господарсько-цінних ознак для практичної селекції. Проведено схрещування і отримано 50 гібридних комбінацій, серед яких виділено 16, які характеризувалися кращими показниками господарських ознак.Висновки. У результаті аналізу основних морфо-біологічних ознак у гібридних комбінаціях цукрової кукурудзи з мутантним геном sh2 виділено джерела селекційно-цінних ознак. За тривалістю вегетаційного періоду всі лінії було розділено на три групи: ранні – 8 ліній, середні – 6 і пізні – 8 ліній. Установлено, що перспективними донорами продуктивності качана були лінії SH-621, SH-234 і SH-936, висоти рослин – SH-234 і SH-936, кількості рядів зерен – SH-234 і SH-113, довжини качана – SH-318 і SH-936. За оцінкою морфо-біологічних ознак виділено ліпші лінії, які були схрещені, отримано низку гібридів. Найкращі з них – ‘Матір Драконів F1’, ‘Юрмала F1’ і ‘Ларус F1’ – передано на державну реєстрацію. | Purpose. Super sweet corn contains a gene that, being expressed leads to an increase in the concentration of sugar. Endosperm genes that regulate the increase in sugar content and decrease in starch content were identified; the most effective of them were shrunken2 (sh2), brittle1 (bt), sugary1 (su1) and sugary enhancer1 (se). The recessive mutation of shrunken2 (sh2) provides a high content of sugars in the grain of milk-wax ripeness compared to other mutant forms that directly affects the taste of sh2-hybrids causes widespread use of this mutation in breeding and has the greatest commercial potential. The main task of breeding is to create a new generation of high-yielding hybrids; it depends on the availability of high-quality source breeding material. Therefore, the aim of our work was the assessment of morpho-biological traits of the super sweet corn lines, selection of the best donor lines of genetic traits, creating of high-yielding corn hybrids.Methods. Morpho-biological traits of the studied lines were evaluated according to the Classifier – handbook of Zea mays L. Comprehensive analysis of samples on economically valuable traits was carried out in accordance with the Methodical recommendations for field and laboratory study of genetic resources of corn. The content of reducing sugars in the grain of the studied corn lines and hybrids was determined by Bertrand method.Results. A study of morpho-biological traits of super sweet corn was carried out. Significant differences between the studied lines were observed in the vegetation period duration, the number of grains in one row and the number of grain rows in the cob. The lines-sources of economically valuable features that can be used for practical selection were identified. Crossing was carried out and 50 hybrid combinations were obtained; among them 16 hybrids cha­racterized by the best levels of economic characteristics were selected.Conclusions. As a result of the analysis of the main morpho-biological traits in hybrid combinations of super sweet corn with the mutant sh2 gene, the sources of selection-valuable traits were identified. According to the vegetation period, all lines were divided into three groups: early – 8 lines, middle – 6 and late – 8 ones. It was determined that promising donors of cob productivity were SH-621, SH-234 and SH-936 lines; signs of plant height – SH-234 and SH-936, number of grain rows – SH-234 and SH-113, cob lengths – SH-318 and SH-936. According to the results of studies of morpho-biological traits, the best lines were identified. They were crossed with other lines of super sweet corn and hybrids were obtained. The three best of them, ‘Matir Drakoniv F1’, ‘Yurmala F1’ and ‘Larus F1’, were submitted for state registration.

Purpose. To create and study genotypes of the secondary triticale of the hexaploid level for their effective use in further breeding and plant growing. Methods. Field study, laboratory analyses, intraspecific hybridization with subsequent individual selection. Results. New genotypes of the secon­dary triticale of the hexaploid level have been created and characterized for economic characters and agroecological traits and properties. Series of short-stem winter triticale was represented by ‘Pshenychne’, ‘Chaian’ to be adapted to the conditions of both intensive and organic farming. They are characterized by high drought resistance and winter hardiness, resistance to lodging, grain shedding, grain germination in the spike and spike fragility as well as by immunity to fungal diseases providing a high level of yield and technological quality of grain. The following new constant forms of triticale as ‘ПС_1-12’, ‘ПС_2-12’, ‘ПС_3-12’, that have an average height of the stem and belong to the Polissia-Forest-Steppe and Forest-Steppe ecotypes, demonstrated high productivity and adaptability in organic farming, particularly in case of the use of biologized elements of agrotechnology. Conclusions. For the creation a new parent material during breeding of hexaploid triticale, the method of intraspecific hybridization is desirable with the use of parent material to be contrasting for eco-geographical origin and adapted local forms, followed by individual selection of genotypes with the desired characteristics and properties in cleavable hybrid populations. New genotypes of the secondary triticale have been created and characterized for breeding, genetic and agroecological traits and properties. In breeding practice, it is advisable to use a whole new approach of agroecological and genetic certification of genotypes for the effective solution of a number of theoretical and practical tasks facing modern ecological and adaptive breeding. New parent material of the secondary winter triticale and scientific support for its cultivation is proposed for further breeding and plant growing.

Purpose. To create and study genotypes of the secondary triticale of the hexaploid level for their effective use in further breeding and plant growing. Methods. Field study, laboratory analyses, intraspecific hybridization with subsequent individual selection. Results. New genotypes of the secon­dary triticale of the hexaploid level have been created and characterized for economic characters and agroecological traits and properties. Series of short-stem winter triticale was represented by ‘Pshenychne’, ‘Chaian’ to be adapted to the conditions of both intensive and organic farming. They are characterized by high drought resistance and winter hardiness, resistance to lodging, grain shedding, grain germination in the spike and spike fragility as well as by immunity to fungal diseases providing a high level of yield and technological quality of grain. The following new constant forms of triticale as ‘ПС_1-12’, ‘ПС_2-12’, ‘ПС_3-12’, that have an average height of the stem and belong to the Polissia-Forest-Steppe and Forest-Steppe ecotypes, demonstrated high productivity and adaptability in organic farming, particularly in case of the use of biologized elements of agrotechnology. Conclusions. For the creation a new parent material during breeding of hexaploid triticale, the method of intraspecific hybridization is desirable with the use of parent material to be contrasting for eco-geographical origin and adapted local forms, followed by individual selection of genotypes with the desired characteristics and properties in cleavable hybrid populations. New genotypes of the secondary triticale have been created and characterized for breeding, genetic and agroecological traits and properties. In breeding practice, it is advisable to use a whole new approach of agroecological and genetic certification of genotypes for the effective solution of a number of theoretical and practical tasks facing modern ecological and adaptive breeding. New parent material of the secondary winter triticale and scientific support for its cultivation is proposed for further breeding and plant growing.

Purpose. To summarize results of studying consumptive qualities of different varieties of potato and define basic characteristics which allow to subsume them under specific economic categories. Methods. Field study, laboratory test, summarizing, analytical approach. Results. Potato varieties entered in the State register of plant varieties suitable to dissemination in Ukraine and new ones especially to be bred at the Institute of Potato Growing of NAAS were studied during the period of 2005–2016 for such basic economic characters as consumptive quality of tubers, content of starch, dry matters, protein, sugar, vitamins, carotenoids and mineral substances as well as aminoacids, color of flesh, suitability for industrial manufacturing of potato products and for purpose of technology. Attention was paid to the good prospects to use varie­ties with purple, blue and red potato tuber flesh with high antioxidant capacity. Potato varieties with above cha­racteristics and their complex combination were defined and described. The requirements of processing industry for potato as a raw material for manufacturing of potato food were given. Conclusions. The major criterion for consumptive qualities of a potato variety and correspondingly division for the commercial use is consumptive quality of tubers, especially content of essential nutrients and their favorable combination, improved taste and cooking quality, high antioxidant capacity, suitability for potato products manufacturing and use for purpose of technology. Potato varieties can be divided for economic purposes into edible, suitable for potato products manufacturing, technical and multipurpose ones.

Purpose. To summarize results of studying consumptive qualities of different varieties of potato and define basic characteristics which allow to subsume them under specific economic categories. Methods. Field study, laboratory test, summarizing, analytical approach. Results. Potato varieties entered in the State register of plant varieties suitable to dissemination in Ukraine and new ones especially to be bred at the Institute of Potato Growing of NAAS were studied during the period of 2005–2016 for such basic economic characters as consumptive quality of tubers, content of starch, dry matters, protein, sugar, vitamins, carotenoids and mineral substances as well as aminoacids, color of flesh, suitability for industrial manufacturing of potato products and for purpose of technology. Attention was paid to the good prospects to use varie­ties with purple, blue and red potato tuber flesh with high antioxidant capacity. Potato varieties with above cha­racteristics and their complex combination were defined and described. The requirements of processing industry for potato as a raw material for manufacturing of potato food were given. Conclusions. The major criterion for consumptive qualities of a potato variety and correspondingly division for the commercial use is consumptive quality of tubers, especially content of essential nutrients and their favorable combination, improved taste and cooking quality, high antioxidant capacity, suitability for potato products manufacturing and use for purpose of technology. Potato varieties can be divided for economic purposes into edible, suitable for potato products manufacturing, technical and multipurpose ones.

Мета. Проаналізувати сортовий потенціал селекції, оптимізацію сортової структури виробництва та періодичність сортових змін тютюну Nicotiana tabacum L. у Республіці Болгарія. Результати. Ретроспективний аналіз селекції тютюну (Nicotiana tabacum L.) свідчить, що за період 1950–2010 рр. у Болгарії створено 158 сортів, серед яких 130 сортів з підвиду Східний (ssp. Orientalis), 28 сортів підвиду Американський (ssp. Americana), з яких 17 сортів типу Вірджинія і 11 сортів типу Берлі. На основі цього сортового потенціалу проведено відповідні сортозміни у виробничому секторі країни. За 50–60 років (1950–2010 рр.) здійснено 5–7 сортозмін вітчизняними сортами. Висока ефективність селекції тютюну з отриманням якісних сортів і порівняно часті сортозміни створюють сприятливі можливості для щорічного оптимального формування сортової структури виробництва залежно від вимог і попиту відповідного сировинного сегменту ринку та кон’юнктури ринку, що швидко змінюється. Висновки. Із загального сортового потенціалу селекції сортів тютюну підвиду Східний (130 сортів) за 13-річний період (1995, 2000–2011 рр.) увійшли до виробничого обороту 47,7% (62 сорти), приблизно 25% (24–30 сортів) формують основний обсяг Східного тютюну, який щорічно виробляють у Болгарії. Сортовий потенціал селекції великолистового тютюну у виробництві використано повністю – 17 сортів типу Вірджинія та 11 сортів типу Берлі. Тютюн є єдиною сільськогосподарською культурою в Болгарії, яка включає в структуру виробництва майже 100% сортів вітчизняної селекції.

Aspergillus flavus and its main secondary metabolite AFB1 pose a serious threat to several important crops worldwide. Recently, it has been reported that some PHD family transcription factors are involved in the morphogenesis and AFB1 biological synthesis in A. flavus, but the role of Cti6, a PHD domain containing protein in A. flavus, is totally unknown. The study was designed to reveal the biological function of Cti6 in the fungus by deletion of cti6, and its two domains (PHD and Atrophin-1) through homologous recombination, respectively. The results showed that Cti6 might up-regulate the mycelium growth, conidiation, sclerotia formation and AFB1 biological synthesis of A. flavus by its PHD domain, while Atrophin-1 also improved the conidiation of the fungus. The qRT-PCR analysis showed that Cti6 increased the conidiation of the fungus through AbaA and BrlA mediated conidiation pathway, triggered the formation of sclerotia by orthodox sclerotia formation pathway, and improved the production of AFB1 by orthodox AFB1 synthesis pathway. Crops models analysis showed that A. flavus Cti6 plays vital role in colonization and the production of AFB1 on the host grains mainly via PHD domain. Bioinformatics analysis showed Cti6 is conservative in Aspergillus spp., and mCherry mediated subcellular localization showed that most Cti6 accumulated in the nuclei, which reflected that Cti6 performed its important biological function in the nuclei in Aspergillus spp.. The results of the current study elucidate the roles of PHD domain containing proteins in the mechanism of the infection of crops by A. flavus, and provided a novel target for effectively controlling the contamination of Aspergillus spp. to crops.

Purpose. To define the level of impact of such factors as rate, time and methods of sowing on seed productivity and certified seeds, and the individual response of winter wheat varieties to these factors if used the ecological system of seed farming, that would allow to form and obtain genetically determined potential of variety productivity. Methods. Weight measurement for determining seed yield; statistical, variance and regression analysis for identifying the reliabi­lity of the experiment results. Results. During the research period, weather conditions were greatly differed both by temperature regime and precipitation, but stability of grain and seeds yield on an annual basis was the main requirement to varieties. During the study of «grain productivity» value and quantitative indices of winter wheat yield structure, the results from 684 plots were obtained which were grouped and analyzed for impact factors for complete certainty, and NIR0,05 was calculated. Conclusions. Thus, in case of shifting sowing time from optimum to later period, efficiency of water use by plants was decreasing to a greater extent during years with insufficient precipitation. The shift of sowing time to later period providing optimal seeding rate and row seeding method did not reduce yield. The yield of winter wheat varieties to be studied when sowing in usual manner with seeding rate of 5,5 million seeds/ha in the period from September 15 and October 5 was the highest. Varieties ‘Slavna’ and ‘Chorniava’ provided the highest grain productivity for seeding rate of 5,5 million seeds/ha and using row seeding method, with slight impact of sowing time factor. Grain yield of studied varieties showed negative response during the experiment when seeding rate decreased up to 2,5–3,0 million seeds/ha. ‘Astarta’ varie­ty provided the highest productivity for certified seeds yield as compared to the control (from 1,59 to 3,38 t/ha). The variant of the experiment when sowing on October, 5 in usual manner with seeding rate of 5,5 million seeds/ha showed the highest productivity of 7,02 t/ha (+3,38 t/ha, or +92,9%). Shifting of sowing time for October, 5 resulted in a significant decrease in yields of certified seeds as compared to sowing time on September 15 and 25. Seed yield of studied varieties when sowing on October, 5 was higher than in case of sowing on September, 25. The highest percentage of certified seeds output in the studied varieties was observed for a seeding rate of 2,5–3,0 million seeds/ha. For seeding rate of 5,5 million seeds/ha for varieties with seeding time between September 15 and 25, the difference in grain yield was negligible. The winter wheat variety ‘Astarta’ provided the highest yield of seeds during the research years – 9,36 t/ha, the standard variety ‘Bogdan’ – the lowest one in the best variant of 5,55 t/ha.

Purpose. To define the level of impact of such factors as rate, time and methods of sowing on seed productivity and certified seeds, and the individual response of winter wheat varieties to these factors if used the ecological system of seed farming, that would allow to form and obtain genetically determined potential of variety productivity. Methods. Weight measurement for determining seed yield; statistical, variance and regression analysis for identifying the reliabi­lity of the experiment results. Results. During the research period, weather conditions were greatly differed both by temperature regime and precipitation, but stability of grain and seeds yield on an annual basis was the main requirement to varieties. During the study of «grain productivity» value and quantitative indices of winter wheat yield structure, the results from 684 plots were obtained which were grouped and analyzed for impact factors for complete certainty, and NIR0,05 was calculated. Conclusions. Thus, in case of shifting sowing time from optimum to later period, efficiency of water use by plants was decreasing to a greater extent during years with insufficient precipitation. The shift of sowing time to later period providing optimal seeding rate and row seeding method did not reduce yield. The yield of winter wheat varieties to be studied when sowing in usual manner with seeding rate of 5,5 million seeds/ha in the period from September 15 and October 5 was the highest. Varieties ‘Slavna’ and ‘Chorniava’ provided the highest grain productivity for seeding rate of 5,5 million seeds/ha and using row seeding method, with slight impact of sowing time factor. Grain yield of studied varieties showed negative response during the experiment when seeding rate decreased up to 2,5–3,0 million seeds/ha. ‘Astarta’ varie­ty provided the highest productivity for certified seeds yield as compared to the control (from 1,59 to 3,38 t/ha). The variant of the experiment when sowing on October, 5 in usual manner with seeding rate of 5,5 million seeds/ha showed the highest productivity of 7,02 t/ha (+3,38 t/ha, or +92,9%). Shifting of sowing time for October, 5 resulted in a significant decrease in yields of certified seeds as compared to sowing time on September 15 and 25. Seed yield of studied varieties when sowing on October, 5 was higher than in case of sowing on September, 25. The highest percentage of certified seeds output in the studied varieties was observed for a seeding rate of 2,5–3,0 million seeds/ha. For seeding rate of 5,5 million seeds/ha for varieties with seeding time between September 15 and 25, the difference in grain yield was negligible. The winter wheat variety ‘Astarta’ provided the highest yield of seeds during the research years – 9,36 t/ha, the standard variety ‘Bogdan’ – the lowest one in the best variant of 5,55 t/ha.