IBA and NAA have been used to promote root
growth in both of woody and herbaceus plants
(Harahap 2011). Rostika et al. (2008) noted that
auxin is required to induce rooting, and achieved
75% rooting in mangosteens using MS medium with
5 mg/L IBA. This medium was also very effective
in increasing the absorption of nutrients from the
mangosteen seeds.