Uman National University | today: 12/25/2025
| Author(s) |
Balabak O.A., Candidate of Agricultural Sciences, , National arboretum "Sofiyivka" Залізняк А. М., , , |
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| Category | The Agronomy | ||
| year | 2025 | issue | Issue 107 part 1 |
| pages | 100-108 | index UDK | 634.54:631.811.98:57:581 | DOI | 10.32782/2415-8240-2025-107-1-100-108 (Link) |
| Abstract | The aim of this study was to investigate the ecological and biological characteristics of vegetative propagation of Turkish hazel (Corylus colurna L.) forms under fine-spray irrigation, using different cutting collection and planting dates, as well as to determine the optimal type and preparation method of the plant material. The findings indicate that propagation of Turkish hazel forms by green stem cuttings is a viable method. The morphogenesis of adventitious roots in stem cuttings was shown to depend on the cultivar, cutting collection date, rooting period. cutting type, and degree of metamery. A crucial condition for successful rooting is the provision of fine-dispersed moisture under protected cultivation conditions. The number of nodes in green stem cuttings of Turkish hazel forms also significantly affected their regenerative capacity. The most suitable material for propagation appeared to be three-node green shoots. The optimal planting time for such cuttings was during the phase of active shoot growth, typically the first ten days of June. When cuttings were planted between June 1-10, rooting percentages ranged from 1.9% to 15.3%. When planted in early July, rooting ranged from 0.9% to 9.6%, and the lowest results were recorded for cuttings planted in early August-ranging from 0.7% to 1.3%. The studied forms of Turkish hazel varied in their regenerative capacity under identical rooting conditions. The best rooting performance was observed in the Poltavska form, followed by Form 1 and Fastigiata. The lowest rooting capacity was found in Form 2 and Nadia. Cuttings collected from the basal part of shoots rooted significantly better than those from medial or especially apical sections. Basal cuttings also showed significantly better root system development compared to apical and medial ones. Agronomic practices significantly influenced both the number and total length of roots. The highest number of roots per cutting and the greatest total root length among the tested forms of Turkish hazel were recorded for three-node basal cuttings planted during the active growth period. The most successful rooting was observed in green stem cuttings of Turkish hazel collected from 3-6-year-old mother plants. For the Poltavska form of this age, rooting reached 15.3%, which was 13.1% higher than for cuttings collected from 20–25-year-old mother plants under the same conditions. The average shoot growth of rooted cuttings from Turkish hazel mother plants of different ages did not differ significantly, and shoot growth was not substantially affected by the form's morphological characteristics. The results indicate that the most effective vegetative propagation of Turkish hazel (Corylus colurna L.) forms by stem cuttings is achieved using three-node green cuttings taken from the basal part of the shoot during the period of intensive growth. The age of the mother plants should not exceed six years. | ||
| Key words | Corylus colurna forms, stem cuttings, roots, metamery, shoot, cutting type. propagation timing | ||