[Efecto tratamientos de NAA e IBA sobre enraizamiento estacas de murtilla (Ugni molinae Turcz)]

Abstract

The effectiveness of four NAA and four IBA concentrations, along with their combinations were tested for their ability to enhance rooting in murtilla cv. Red Pearl-INIA. Concentrations were assayed at four soaking times (10 min, 5 min, 1 min, 10 s) in stem cuttings collected from top of spring-growing shoots. Irrespective of soaking times, rooting percentage increased as hormone concentration was reduced from 1500 to 375 ppm for NAA and from 3000 to 750 for IBA. Rooting efficiency followed the same trend in NAA-treated stem cuttings whereas it was not affected in IBA-treated explants. Combinations of NAA and IBA improved rooting efficiency but only in those treatments on which both hormones were at the lowest concentration