1. Biotechnology Unit, INIA (National Institute of Agricultural Research), Las Brujas, Ruta 48 km 10, Canelones, Uruguay.
2. Corresponding author. Phone: +59823677641. Fax: +59823677609. E-mail: mdallarizza@lb.inia.org.uy
3. Grain Quality Laboratory, INIA (National Institute of Agricultural Research), La Estanzuela Ruta 50 km 11, Colonia, Uruguay.
4. Variety Research Program, INIA (National Institute of Agricultural Research), La Estanzuela, Ruta 50 km 11, Colonia, Uruguay.