Gene structure of the target genes screened in both populations, inodorus and cantalupensis , (eIF4E, eIF(iso)4E and PDS). Boxes represent exons and lines introns. White and black boxes indicate 3'UTR and 5'UTR regions. Amplicons analyzed by TILLING are indicated. Black and white triangles indicate mutations found in the inodorus Piel de Sapo and cantalupensis Charentais populations, respectively. Numbers correspond to the mutations described in table 3.