Indonesian Journal of Oil Palm Research Volume 25 Number 1 Year 2017 is published by presenting articles Genetic variability in fatty acid and beta carotene content of 24 accessions Cameroon germplasm of IOPRI collection, Genetic map construction of IOPRI's oil palm (Elaeis guineensis Jacq.) mapping population derived from SP540T by using Restriction site Associated DNA (RAD) markers, Legitimacy of Progenies using SSR Markers as Controlling System and Earlier Selection in the Oil Palm Nursery (Elaeis guineensis Jacq.), Production of oil palm sex inflorescense and its response on the treatment of plant exogenous hormone treatment under drought condition, The effectiveness of fungicides against fungal isolates carried by oil palm seeds.