EFFECT OF DIFFERENT AUXINS ON IN VITRO ROOTING OF PEACH ROOTSTOCK GF 677

摘要

The experiment was conducted at National Agricultural Research Centre, Islamabad during 2003. For in vitro rooting of peach rootstock GF 677. three auxins (IAA, IBA and NAA) were tested at concentrations of 0 2. 0.4. 0.6. 0.8 and 1.0 mg 1~(-1). The root number and root length were significantly (p<0.05) affected by auxins type and concentrations. The optimum concentration was different for each auxin Maximum number of roots (5) and roots > 1.5 cm in length (4) were obtained with 0.4 mg 1~(-1) IBA without callus inter phase however. NAA and IAA affected the root growth negatively. Callus formation was strongly stimulated by NAA. For these reasons IBA is preferable auxins for in vitro rooting of peach rootstock GF 677 Well rooted plantlets were transferred to greenhouse successfully and grown with 80% survival.