Міжнародні видання. Навчально-науковий інститут агротехнологій, селекції та екології

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Browsing Міжнародні видання. Навчально-науковий інститут агротехнологій, селекції та екології by Author "Biliavska, L. H."

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    The results of study of ecological stability and plasticity of Ukraian soybean varieties
    (Annals of Agrarian Science. – Volume 15, lssue 2, 2017) Biliavska, L. H.; Білявська, Людмила Григорівна
    Abstract The article gives analysis of practical value of soybean varieties according to productivity and ecological plasticity in different climatic provinces in Ukraine. Ecological estimation of soybean varieties using method of Eberhart S.A. and Rassel W. K. has been made. Variety plasticity and adaptive potential have been defined on the basis of this estimation. It has been established that varieties Almaz and Diona were the best varieties according to the results of ecological variety studies. The most favourable regions for cultivation of up-to-date soybean varieties have been chosen. Variety Almaz has been defined as the most intensive and plastic soybean variety (average yield in years was 2.66 – 2.93 t/hа). Varieties Antratsit and Ametist also have shown high plasticity. Varieties are recommended for cultivation in steppe and forest-steppe in Ukraine. The higher numerical value of coefficient the more variety reaction on improving cultivation conditions. Thus, varieties with higher regression coefficient and lower mean square value have optimal indicators. High sensitivity of some varieties to unfavorable cultivation conditions offen narrows area of these varieties distribution and limits their general distribution. On the basis of examination of soybean varieties in different regions we can predict genetically specific degree of yield stability (adaptation to cultivation conditions).
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    Variability of soybean varieties in terms of yield components and yield in the conditions of the Forest-Steppe of Right-Bank Ukraine
    (2026-01-18) Mazur, O.; Mazur, O.; Zayka, K.; Didur, I.; Biliavska, L. H.; Білявська, Людмила Григорівна; Tsyhanskyi, V.; Verheles, P.
    The article presents the results of long-term studies of soybean variety variability in terms of valuable economic traits (yield components) and yield under different hydrothermal growing conditions. Varieties that ensured high stability of yield components were identified using mathematical and statistical analysis methods. The highest repeatability coefficients for the number of productive nodes were observed in the Desna variety – 0.82, with a coefficient of variation of 12.7% and 16.1 productive nodes; in the Bilyavka variety – 0.81, with a coefficient of variation of 12.4% with an average value of 16.7 units. The variability of the yield level during the years of research was high, with the repeatability coefficient ranging from 0.55 to 0.75, which is quite natural given the large number of formative traits that contribute to its determination. The highest repeatability coefficients were observed in the varieties Femida – 0.75, coefficient of variation – 10.7%, and yield – 1.88 t/ha; Amethyst – 0.73, coefficient of variation – 11.4%, yield – 1.88 t/ha; Vezha – 0.72, coefficient of variation – 11.4%, yield – 1.89 t/ha. It should be noted that these varieties were distinguished by high values of repeatability coefficients for the weight of 1.000 seeds, in particular, Femida – 0.91, Ametist – 0.93, Vezha – 0.80; as well as for the number of productive nodes, pods, and seeds: Femida – 0.69; 0.52 and 0.55, and Vezha – 0.68; 0.56 and 0.57, respectively. Thus, ensuring a stable level of soybean yield is determined by the formation of stable indicators of the elements of the soybean yield structure of each variety in particular.