1 Department of Forestry Science and Biodiversity, Faculty of Forestry and Environment, Universiti Putra Malaysia (UPM), Serdang, Selangor, Malaysia.
2 Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada.
3 Laboratory of Bioresource Management, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia (UPM) Serdang, Selangor, Malaysia.
4 School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.