“…Given their high polymorphism, codominant inheritance, and the simplicity of the methods used to develop them, microsatellites, or simple sequence repeat (SSR), appeared as appropriate markers (Morgante and Olivieri, 1993). Many of these were developed in peach (Cipriani et al, 1999;Sosinski et al, 2000;Testolin et al, 2000;Aranzana et al, 2002;Dirlewanger et al, 2002) and cherry (Downey and Iezzoni, 2000;Cantini et al, 2001). By collecting all the available information, Aranzana et al (2003b) analyzed 109 SSRs developed in peach and cherry by different research groups and mapped 96 of them on the Prunus reference map (Joobeur et al, 1998).…”