Genetic relationships among accessions of mandacaru (Cereus spp.: Cactaceae) using amplified fragment length polymorphisms (AFLP)

► Molecular markers in cactus. ► AFLP for an adequate classification of the Cereus genus. ► Genetic diversity in plants of the Cereus genus. ► AFLP for differentiation of plants showing similar morphological characteristics. ► AFLP analysis for differentiate mandacaru plants grown in different regions of Brazil.