Department of Horticulture, School of Agriculture, São Paulo State University (UNESP), Avenida Universitária, 3780, Botucatu 18610-307, SP, Brazil
Sergio Ruffo Roberto
Department of Agronomy, Agricultural Research Center, Londrina State University (UEL), Celso Garcia Cid Road, P.O. Box 10.011, Londrina 86057-970, PR, Brazil
Simone Rodrigues da Silva
Luiz de Queiroz College of Agriculture, University of São Paulo (USP), Avenida Pádua Dias, n° 11, P.O. Box 9, Piracicaba 13418-900, SP, Brazil
