19 out of the 24 RAPD primers tested of the series RAPDs; A, B and D Operon were amplified (Table 2). The mean of the detected polymorphism by RAPD primers was 82.9%. Primers A19, D04 and D10 revealed 100% polymorphism. The mean number of bands revealed by a RAPD primer was 11.15, with oscillations between 4 and 17. A total of 222 loci were studied and 184 were polymorphic.
The analysis based on RAPD permitted the estimation of genomic similarities and differences. Figure 1A shows band patterns obtained by RAPD primer D10, which showed differences among the potato genotypes evaluated.