Uman NUH | today: 07/08/2024
| Author(s) |
Гребенюк В. М., , , Balabak A.F., Doctor of Agricultural Sciences, , Uman National University of Horticulture, Ukraine |
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|---|---|---|---|
| Category | The Agronomy | ||
| year | 2024 | issue | Issue number 104. Part 1 |
| pages | 97-108 | index UDK | 634.18:631.535 | DOI | 10.32782/2415-8240-2024-104-1-97-108 (Link) |
| Abstract | The experimental part of the work was carried out in 2021–2023 in the vegetation and laboratory conditions of the Department of Gardening and Park Management of the Uman National University of Horticulture, as well as in the nurseries of the National Arboretum «Sofiyivka» of the National Academy of Sciences of Ukraine and Brusvyana LLC. The research material was based on black chokeberry varieties that are promising for use in landscaping of the Right-Bank Forest-Steppe of Ukraine - Amit, Aron, Viking, Vsevslava, Halychanka, Nero, and Hugin. All the studied cultivars of black chokeberry are capable of rooting by green stem cuttings, but the biological ability of each of them to this method of vegetative propagation is different. Based on the study of the seasonal development of mother plants for seven cultivars of black chokeberry, the optimal time for green stem cuttings was determined – 10–15 June. Such varieties as Amit, Aron and Halychanka during the period of intensive shoot growth are characterised by high regeneration capacity compared to other studied varieties. According to the degree of rooting, two groups of varieties were identified: easily rooted and medium rooted. The rooting rate of cuttings in the seven studied varieties of black chokeberry during the period of intensive shoot growth was 31,8 % on average, and in the phase of decline of intensive shoot growth – 6,2 %. It has been proved that the regeneration capacity of green stem cuttings of black chokeberry varieties in the phase of intensive shoot growth significantly depends on the type of cutting and its metamerism. The best rooting was observed in green three-node stem cuttings in comparison with apical and medial one-node and two-node cuttings of almost all studied varieties of black chokeberry. Varietal differences in regeneration processes are also manifested in the nature of the formation and growth of the emerging root system. The duration of the root formation period varies slightly ranging from 8 (Aron) to 12 days (Vseslava). | ||
| Key words | black chokeberry, stem cuttings, terms of cuttings, rooting, planting material. | ||