“…Serrano et al (2012) used IBA (2000 mg kg -1 ) in the clonal production of the cultivars Guajarina, Iaçará and Cingapura. Some commercial growth regulator formulations such as Serradix ® (Cardoso, 1961;Anandaraj and Sarma, 1994), Vigortone ® (Cardoso, 1961) (Leite & Inforzato, 1966), IBA (50 mg L -1 ) (Thanuja et al, 2002), IBA (2000 mg kg -1 in talc) (Serrano et al, 2012), IBA (Secundino et al, 2014) were used to promote rooting of cuttings P. nigrum.…”