Fig. 2. AFLP genotypes for accessions and selected cultivars. Lines 2–9 carry the N gene on chromosome H; Lines 10–16 carry the N gene on an alternative chromosome; Lines 17 and 18 are TMV^S cultivars. Presence of AFLP marker is indicated by shading. Genotypes are provided here for only 19 of 168 AFLP markers. The 149 markers not shown were all present for Holmes Samsoun and absent for the remaining accessions and cultivars.