Evaluation of five rootstocks with cherry cultivars 'Kordia' and 'Regina' at two locations in Slovenia

V. Usenik, B. Donik Purgaj, N. Fajt
The effect of rootstocks Gisela 5, Gisela 6, P-HL C, Piku 1 and Weiroot 158 on ʻKordiaʼ and ʻReginaʼ sweet cherry tree vigour, productivity and fruit quality at two locations in Slovenia over a five-year-period was evaluated. The results present the impact of location and rootstock on tree vigour. Trees of ʻKordiaʼ on Gisela 6 were significantly more vigorous than trees on Gisela 5, Piku 1 and Weiroot 158, and similar to trees on P-HL C. ʻReginaʼ trees on Gisela 5 were similar in vigour to those on Gisela 6, Piku 1 and Weiroot 158 and significantly less vigorous than on P-HL C. Differences between trunk cross-sectional area above and below the graft union were the highest on Gisela 6 trees. Yield efficiency (kg cm-2) was affected by the interaction cultivar×rootstock and location. Yield efficiency of ʻKordiaʼ was not significantly affected by rootstock but of ʻReginaʼ the highest on Gisela 5 and the lowest on P-HL C. Cumulative yield for both locations and both cultivars was significantly affected by rootstock as follows: Gisela 6 › Gisela 5 ≥ Piku 1 ≥ Weiroot 158 › P-HL C. The interaction cultivar×location, rootstock and year affected fruit weight.
Usenik, V., Donik Purgaj, B. and Fajt, N. (2017). Evaluation of five rootstocks with cherry cultivars 'Kordia' and 'Regina' at two locations in Slovenia. Acta Hortic. 1161, 261-266
DOI: 10.17660/ActaHortic.2017.1161.42
Prunus avium, sweet cherry, cultivars, rootstocks, yield efficiency, tree vigour, fruit weight

Acta Horticulturae