To develop soybean cultivars with high productive capacity and good adaptation to the climatic conditions of the State of São Paulo, Brazil, hybridizations were made involving soybean parental material with long juvenile period. Lines were selected and evaluated in preliminary and regional experiments carried out at the experimental stations of the Instituto Agronômico. In order to provide soybean growers with the most productive cultivars, regardless of its origin, simultaneous varietal tests were performed by the Institute Agronômico de Campinas/Coordenadoria de Assistência Técnica Integral system in the areas where soybeans are cultivated. In the preliminary experiments a simple lattice design (6 x 6) was utilized whereas, in the regional varietal tests a randomized block design was used with four replications. The release of the soybean cultivar IAC-15 was a result of these regional experiments.
selection; juvenile period; adaptation; cultivars