Twenty-five accessions of apple, representing eight cultivars ('Golden
Delicious', 'Delicious', 'Gala', 'Jonagold', 'Jonathan', 'Florina', '
Fior di Cassia', and 'Imperatore Dallago') have been characterized wit
h Random Amplified Polymorphic DNAs (RAPD). The reliability of the met
hod was tested by analyzing separate scions of the same clone and also
by comparing different accessions of the same cultivar. Using two sep
arate ten bp primers, it was possible to obtain a distinctive fingerpr
int for each of the cultivars. The method is simple, rapid and should
provide a useful system for documenting the identity of clonal materia
l.