Evaluation of collective samples of oil flax by economic valuable and marking signs

Abstract

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.