Haploids, diploids and tetraploids of Cyclamen persicum (2n=x=24, 2x=48 and 4x=96), C. graecum (2n=84) and their interspecific hybrids (2n=45, 3x=66, 4x=90) were analyzed cytologically. The mean chromosome association per PMC at diakinesis or at metaphase I in meiosis was 23.29–23.39 I + 0.31–0.36 II in C. persicum (x), 0.17–0.23 I + 23.88–23.92 II in C. persicum (2x), 0.52–1.18 I + 46.39–46.78 II...... hiện toàn bộ