The eggplant collection of 510 accessions contains mainly cultivated Solanum melongena, but also accessions of other species like Solanum aethiopicum and Solanum macrocarpon, all belonging to the Subgenus Leptostemonum. When material is clustered according crossability , S. melongena and S. incanum belong to the primary genepool, S. aethiopicum, S. anguivi and S. virginianum to the secondairy genepool. S. macrocarpon, S. capsicoides, S. dasyphyllum, S. nigrum, S. scabrum, S. sisymbriifolium, S. torvum, S. viarum and S. villosum can be placed in the tertiary genepool.
The collection comprises of 91 cultivars, 316 landraces, 10 research material, 22 accessions of wild species and 71 samples of unknown population type. More than 60% of the collection constitutes of landraces.
Half of the collection is represented by material originating in Asia. About one third are PI numbers received from USDA plant introduction stations. In the period 2002-2005 the African species aethiopicum and macrocarpon from Togo, Nigeria, Ghana, Burkina Faso have been added and enlarged the collection with a substantial part. These accessions have been regenerated in the framework of an EU funded project called “Eggnet”.