The 45S and 5S rDNA loci were physically mapped by double-probe FISH on mitotic metaphase chromosomes in the six strains of F. esculentum tataricum. Results showed that tataricum very small similar. diploid karyotype formulas these two species 2n=2x=16=12m+4m (SAT) 2n=2x=16=12m+4sm (SAT), respectively. Four pairs IS, IIS, IIIL, VL, as well IL IVS esculentum, five VIIS, three IL, IVS, VIS There ...