'Precoce de Itupeva' (IAC N 4474-5) and 'Branca de Guapiara' (IAC N 2374-8) are the two new low chilling nectarine selections adapted to the mild winter conditions prevailing in the State of São Paulo. They are the result of the nectarine breeding work started at the Instituto Agronômico, Campinas, State of São Paulo, Brazil, in 1970, with crosses between some local peach cultivars and nectarine selections introduced from Florida, USA. 'Precoce de Itupeva' parentage is 'Cristal' x 'Colombina', F2 open pollinated, with 'Branca de Guapiara' is 'Supermel' x 'Colombina', F2 self-pollinated. Both are white flesh, freestone nectarines, of excellent quality and sweet taste.