Several (dura x oleifera) x dura backcrosses planted in August 1982 at Pusat Perkhidmatan Pertanian Tun Razak (PPPTR) in Pahang were found to show a high incidence of trunk rot in January 1991. This short communication is to document the occurence of trunk rot in oleifera backcrosses, a phenomenon which has not been reported before. The backcrosses originated from crossing the hybrids of Deli dura of SOCFIN origin and the Kuala Lumpur Melanococca (KLM), an oleifera palm believed to be of brazilian origin (Ooi et al., 1981), with Deli duras of Serdang and Ulu Remis origins, i.e (DxO) x D.