ABSTRACT
Abstract ................................................................................................. 239 13.1 Introduction ................................................................................ 239 13.2 Materials and Methodology ....................................................... 248 13.3 Results and Discussion............................................................... 249
IVAN S. KOSENKO1, ANATOLY I. OPALKO1,2,*, OLEKSANDR A. BALABAK1, OLGA A. OPALKO1, and ALLA V. BALABAK2
1National Dendrological Park “Sofiyivka” of NAS of Ukraine, 12-а, Kyivska St., Uman, Cherkassy Region, 20300, Ukraine, E-mail: ndp. sofievka@gmail.com
2Uman National University of Horticulture, 1, Instytutska St., Uman, Cherkassy Region, 20305, Ukraine
*Corresponding author. E-mail: opalko_a@ukr.net
13.4 Conclusion ................................................................................. 263 Acknowledgment .................................................................................. 263 Keywords .............................................................................................. 264 References ............................................................................................. 264
ABSTRACT
The necessity of assortment enrichment of the hazelnut, also known as filbert (sometimes called cobnuts), as one of the most valuable nut crops, is associated with the need of search and selection of sources and donors of scarce signs for breeding and stable crop capacity of industrial plantations as well as the improvement of the quality of domestic hazelnut cultivars, especially concerning the form of nut kernel. As the result of the genetic collection Corylus spp. of the National Dendrological Park (NDP) “Sofiyivka” of National Academy of Sciences (NAS) of Ukraine screening and according to economic-valuable features, a set of samples was taken, and the best of the samples were included in the hybridization program, in particular with representatives Corylus chinensis Franch. A number of hybrid seedlings were received, and the best of them were prepared to be submitted to the state registration of the State Veterinary and Phytosanitary Service of Ukraine, in particular, new hazelnut cultivars: ‘Sofiyivsky 1’; ‘Sofiyivsky 2’; and ‘Sofiyivsky 15’, which develop fruits with a nearly globular shape, are characterized by an increased winter hardiness and drought tolerance, and lack of nut-bearing periodicity, compared with Turkish and Azerbaijan cultivars. Having summed up the results of the research, a new breeding scheme was made, which helped increase the passing of breeding material through the stages of a breeding scheme for 5-8 years, namely, at the growing stage of F1 seedlings for 3-4 years, in a hybrid orchard for 1-2, and at the propagation stage of the best seedlings with layering for 1-2 years.
