RELATIONSHIP AMONG APRICOT CULTIVARS FROM HUNGARY AND A SOUTH EUROPEAN POOL DETERMINED BY SSR MARKERS

Nine apricot cultivars belonging to the germplasm collection of St.
Istvan University (Budapest, Hungary) and eleven from North American and South European countries maintained at IVIA (Valencia, Spain) were studied by means of SSR molecular markers.
The aim of the study was to determine the genetic relatedness of Hungarian apricots to the South European group.
Twelve primer pairs flanking microsatellites sequences in peach genome were used for the diversity study.
All of them resulted polymorphic in the set of cultivars studied and allowed to distinguish all cultivars.
Presence or absence of each band was recorded for each cultivar.
Cluster analysis was conducted using NTSYS (Exeter Software, Setauket, NY) and Nei’s genetic distance.
Hungarian cultivars clustering together separated from North American and South European cultivars.
Two sets of Hungarian cultivars resulted very similar. ‘Ceglédi orias’ and ‘Szegedi mammut’ showed a coefficient of similarity value of 0.89, which suggested they are closely related, on the other hand, they are also very similar according to pomological characters. ‘Borsi rozsa’ and ‘Rozsakajszi’ belong to the same variety group named ‘Rozsabarack’, in this study they share 27 markers out of 29 screened which agrees with their putative origin.
SSR markers have proved to be an efficient tool for fingerprinting apricot cultivars and conducting genetic studies of relatedness in apricot.

XII International Symposium on Apricot Culture and Decline

C. Romero, G. Llacer, M.L. Badenes, A. Pedryc

Prunus armeniaca, microsatellites, diversity

https://doi.org/10.17660/ActaHortic.2006.701.35