1. School of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), São Paulo, Brazil
2. School of Agricultural Sciences, Technical University of Machala (UTMACH), El Oro, Ecuador
3. Mato Grosso State University (UNEMAT), Mato Grosso, Brazil
4. National Institute for Agricultural Research (INIAP), Pichilingue Tropical Experimental Station, Los Ríos, Ecuador