The authors would like to thank the Ministry of Science,Technology,and Innovation and Ministry of Higher Education as well as the Institute of Tropical Forestry and Forest Products,Universiti Putra Malaysia,for providing the fund INTROP HICOE-(6369115).
The depletion of log resources encourages research into alternative ways to sustain the wood supply.Therefore,the 4-year-old Rubber Research Institute of Malaysia(RRIM)clones series,RRIM 2020 and RRIM 2025,were chosen...