Flourish of hazel cultivars (Corylus avellana L.) in the Banja Luka region (Bosnia and Herzegovina) and justifiability of using artificial pollination
In the world production of hazels, there is no a generally accepted hazel cultivar as a universal pollinator, but cultivar composition is rather determined based on cultivar characteristics, which are manifested in given growing conditions. One of the most important parameters that determines the cultivar composition of hazel is the knowledge of reproductive biology of cultivars, which have numerous specificities such as allogenic fertilization and incompatibility. Besides the above, the process of pollination and fertilization of hazel is further complicated by the different dynamics of cultivar flowering and discrepancies in terms of the period of flowering. All these factors influence the cultivars in orchard to have a low level of fruit set and yields are below expectations. As a contribution to the knowledge of phenology of hazel flowering the flowering of several hazel cultivars was observed in the area of Banja Luka region. The observation was carried out over the period of two years at the site of Joavka (Čelinac) on Romai, and Tonda Gentile Romana cultivars and on two clone cultivars of Istrian Long with different phenological characteristics. All cultivars were grafted onto the Corylus colurna L. rootstocks. The results of research show that temperature fluctuations during the phenophase of flowering, significantly affect the initiation and length of hazel flowering, as well as the inter-pollination of cultivars in the orchard.
Ilić, P., Đurić, G. and Mićić, N. (2021). Flourish of hazel cultivars (Corylus avellana L.) in the Banja Luka region (Bosnia and Herzegovina) and justifiability of using artificial pollination. Acta Hortic. 1308, 333-338
cultivar composition, temperature changes, pollen freezing, fertility control