Many data have been collected in the past which have been used to select the core collection. Unfortunately these data have not been saved and could not be entered in the CGN database.
In 2012, Gilad Gabay performed research on the orchard at the research unit “Plant Breeding” of Wageningen University & Research, for his master thesis called “Characterization of apple accessions for traits of relevance for organic agriculture”. More than 3000 characterisation and evaluation data are available on the website. Scores can be found for fruit quality, appearance and production, architectural traits and disease susceptibility.