The aim of the work was to evaluate the collection samples of winter triticale by protein content and to establish the relationship between its quantity and other valuable economic features. Materials and methods. Collection samples of winter triticale, infrared spectrometry method, mathematical and statistical processing. Results. According to the protein content, the samples was divided into four groups. The average protein content in the collection nursery was 11.2% with the variability of individual values from 9.3% to 12.2%. The average reliable inverse correlation of yield with protein content in grain (r = −0.37) and weak line with starch content (r = 0.17) were established, Conclusions. An inverse relationship of medium strength between starch and protein content has been found. which proves the possibility of selection to increase grain yield without reducing the starch content. An inverse correlation between protein content and grain yield has been shown.

Встановлено сильний позитивний кореляційний зв'язок зернової продуктивності із масою зерна з колосу (r = 0,78) і середній -із кількістю зерен з рослини та колосу (r = 0,47 і 0,63 відповідно). Між зерновою продуктивністю та масою 1000 зерен і висотою рослин кореляційний зв'язок практично відсутній. Негативна кореляція середньої сили (r = -0,43) встановлена між масою зерна з рослини та кількістю продуктивних стебел. На основі методу регресивного аналізу з'ясовано напрямок і величину змін зернової продуктивності у колекційних зразків тритикале озимого залежно від елементів структури урожайності.Ключові слова: тритикале озиме, колекційні зразки, елементи структури зернової продуктивності, мінливість і кореляційний зв'язок.

Aim. Evaluation of promising collection samples of linseed for economically valuable and marker traits to identify the sources of these traits and their further use in the creation of new breeding material. Methods. Field, laboratory, measuring and weighing, mathematical and statistical. The research was conducted in 2019–2021 at the research fields of the Institute of Agriculture, located in the Fastiv district of the Kyiv region. Results. According to the results of the study and evaluation of 17 promising samples of oil flax of different ecological and geographical origin, the best genotypes were selected in the collection nursery for the main economic, valuable and marker characteristics. It was established that the majority of the collection samples belong to early ripening with a duration of the vegetation period of 85 days. The highest weight of 1000 seeds was found in varieties Evrika, Debut (8.74 and 8.44 g) and Vohni Dniprohesu (7.96 g). The maximum seed productivity was characterized by varieties Evrika (237 g/m2) and Legur (231 g/m2), which also had the largest number of seed pods per plant (17.1 pcs.). According to the total length of the stem, the samples were at the level of 41.8–63.3 cm, and according to the technical length of the fiber – 26.2–44.1 cm. The varieties Svitlozir and Aisberh, which have white flower color and pink and white, were characterized by contrasting marker features color of anthers, respectively. The varieties Debut (dark brown) and Svitlozir (yellow) differ in seed color. The average content of oil in the seeds for the entire sample of varieties was 47.7%. The highest oil content was determined for the Rucheek, Nebesny, Zaporizhzhya Bohatyr, and Vodohray samples (48.5–49.1%). According to the results of the analysis of the fatty acid composition of the flax samples, the best genotypes were selected based on the content of palmitic, stearic, oleic, linoleic, and linolenic acids. Conclusions. According to the results of the study, the best collection samples of oil flax were selected, which are sources of economically useful and marker traits: high seed productivity, increased oil content in seeds, early maturity, which will be involved in the hybridization program to create a new source breeding material with a given set of traits. Basic information on the economic and valuable characteristics of oilseed flax was obtained, which can be used in further scientific research.

The purpose of the study was to identify the collection of winter triticale in the allelic state of the waxi-genes and to identify sources with the presence of waxi-alleles for these genes. The surveys were conducted over 2017–2019 at the NSc Institute of Agriculture. The subject of the research are 43 collection samples of winter triticale, 29 of which are numbers of own breeding, 14 – breeding varieties of the National Institute of Agriculture of NAAS (9) and scientifi c institutions of Poland (1) and the Russian Federation (4). For control, we used soft winter waxy-wheat Sofi yka and wheat with wild of starch Oksana. Field, laboratory (infrared spectrometry, light microscopy, polymerase chain reaction (PCR)) methods, weights and mathematical and statistical methods of research were used to evaluate the collection material. According to the results of molecular genetic analysis of the Wx gene polymorphism in the winter triticale collection samples, it was found that all the tested samples had wild type alleles according to the Wx-B1 gene and were characterized by the absence of the Wx-D1 gene. The Wx-A1 gene revealed samples with both wild-type alleles and presence in the genome of the wax-allele. 8 collections with Wx-A1 gene alleles were selected: selection numbers 141, 153, 201, 223, 229 and varieties Lubomir, Petrol and Poliskii 7. The selected samples varied signifi cantly in terms of such characteristics as grain productivity, weight of 1000 grains, starch content. The tendency to decrease the size of the granules and increase the evenness of the granulometric structure of the starch in the samples with the presence of the wax-allele of the Wx-A1 gene was established. Wx-A1 gene allele samples are valuable starting material for the creation of new winter triticale varieties with increased amylopectin starch suitable for bioethanol processing. Key words: winter triticale, bioethanol, starch, polymerase chain reaction, amylopectin, amylose, allelic state of wax genes, waxi-allele, wild type.

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