Current oil palm planting materials grow at a rate of 40-75cm / yr. The palms are too tall after 20 years and harvesting is difficult. Breeding for short oil palms is one of the main priorities. PORIM has developed PORIM Series I (PS1) planting materials with slower height increment in PORIM-Nigerian germplasm collection (Rajanaidu et al., 1998;1999) PS1 is produced through the following schemes:

Main Research: Kushairi A