The acclimatization compartment and growth hormone impact on the life percentage of endangered Hopea gregaria tree species.

Abstract

In Southeast Sulawesi province, Indonesia there is an endemic tree species with the scientific name of Hopea gregaria Slooten belonging to Dipterocarpaceae family. The wildings of this species, named pooti locally, were available abundantly at Nipa-Nipa Grand Forest Park. These wildings may be collected for plant procurement programs. Unsustainable forest exploitation management in the past and also forest fire, have caused this species is classified as an endangered forest tree species in Indonesia and this tree species really needs to be sustained. This study was carried out at the glasshouse of the Association of Indonesian Mycorrhizae in the Southeast Sulawesi branch for three months. A factorial completely randomized design was used, consisting of 2 factors namely provision of acclimatization compartment, without and with cover, and Rootone-F concentration of 0, 50, 100, and 150 ppm. An analysis of variance (F-test) was used, if the result was significant, further analyses using Duncan Multiple Range Test will be done. Results revealed that the acclimatization compartment and Rootone-F interaction had no effect on all variables. However, acclimatization can increase the life percentage of shoots, wildings’ height, and number and leaf length. In the beginning, natural wildings rely on acclimatization while Rootone-F increases wildings’ height.