Annals of Botany 82: 61-65, 1998
© 1998 Annals of Botany Company
Phylogenetic Analysis of Dipterocarps Using Random Amplified Polymorphic DNA Markers
School of Biological Sciences, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260
November 10, 1997 ; December 23, 1997 . March 26, 1998 .
The phylogenetic relationships among 12 species belonging to three different genera (Shorea, HopeaandAnisoptera) of Dipterocarpaceae were studied using random amplified polymorphic DNA (RAPD) markers. A modified CTAB DNA extraction protocol was used to obtain tannin- and polysaccharide-free genomic DNA from mature leaves. Cluster analysis of data from six random primers placed the 12 species in three groups corresponding to their respective genera. Four distinct nodes ofShoreaspp. and two ofHopeaspp. could be identified.Anisoptera megistocarpaserved as an outgroup, and was unique when compared to the other genera examined. RAPD profiles of five individuals ofH. odoratawith six random primers were identical, suggesting that there is little intraspecific variation in this species. The RAPD technique can thus be successfully applied for the study of phylogenetic relationships of this important group of tropical timber trees.Copyright 1998 Annals of Botany Company
Dipterocarpaceae,Anisopteraspp.,Hopeaspp.,Shoreaspp., RAPD markers, tropical timber trees.