CLONAL SELECTION OF ‘GIRONELL’ AND ‘NEGRET’ HAZELNUT CULTIVARS

M. Rovira, M. Romero, J. Clavé
A clonal selection of two hazelnut (Corylus avellana L.) cultivars 'Negret' and 'Gironell', was carried out over 2 years in the main producing areas. Ten clones of each cultivar were pre-selected and introduced in 1989 in a comparative trial at IRTA-Mas Bové.

Isozyme analysis of the 20 clones was performed. The 10 clones of each cultivar presented the same banding patterns on the zymogrames as 'Gironell' and 'Negret' respectively. Behaviour of this material and some characteristics as yield, vigour and kernel quality (kernel percentage, blank nuts, brown spots in kernel cavity, nut size, etc.), have been studied during the period 1992–1995.

Results showed significant differences between clones of this two cultivars for most of the characters studied, being outstanding two of 'Gironell' (G-3 and G-5) and one of 'Negret' (N-9) because of their kernel quality. Whereas differences between clones of ‘Negret’ were not significant for cumulative yield (from 1992 to 1995), they were for ‘Gironell’ cultivar, outstanding four of them (G4, G-6, G-7 and G-8). Clonal selection in hazelnut has shown variability in the performance of the clones.

Rovira, M., Romero, M. and Clavé, J. (1997). CLONAL SELECTION OF ‘GIRONELL’ AND ‘NEGRET’ HAZELNUT CULTIVARS. Acta Hortic. 445, 145-150
DOI: 10.17660/ActaHortic.1997.445.19
https://doi.org/10.17660/ActaHortic.1997.445.19
Hazelnut, Corylus avellana L., cultivars, clonal selection, ‘Gironell’, ‘Negret’

Acta Horticulturae