“…Thus, after 12 yr of selection, they have achieved varieties with the desired characteristics, as in the case of 'Cobriza INTA', an onion with excellent storage capacity and darker cataphylls (Galmarini, 2000;Galmarini et al, 2001). There are other reports on the effectiveness of selection on characteristics such as precocity and storage capacity of onions (McCallum et al, 2001;Cardoso and da Costa, 2003). On the other hand, when comparing open-pollinated (OP) onion varieties with hybrid varieties, no consistent superiority of the latter has been found in both yield and bulb quality (Cramer, 2001).…”