1. Faculty of Agricultural Sciences, Technical University of Ambato. Cevallos, Province of Tungurahua, Ecuador
2. CABI-UNESP-FEPAF, Rua José Barbosa de Barros, 1780, Botucatu, SP, 18610-307, Brazil
3. Universidad Vña del Mar, Escuela de Ciencias, Viña del Mar, Chile