Molecular characterization of sour orange (Citrus aurantium) accessions and their relatives using SSR and SRAP markers.

Citrus production with its many varieties is of importance since it provides economically important products for Turkish exports. Sourorange is a rootstockcommonly used for propagating the different scion varieties. Knowledge of the genetic diversity of the rootstockaccessions would be useful in order to improve citrus breeding programs. We studied genetic relationshipsand diversity of 51 accessions of sourorange (Citrus aurantium) and their relatives using SSR (simple sequence repeat) and SRAP ( sequence-related amplified polymorphism) molecular markers. Twenty-one SRAP primer combinations were tested on these accessions and relatives, producing 167 polymorphic fragments, with a mean of 8.0 and a mean polymorphism information content