“…However, in tree leaf samples, cross contamination of DNA due to secondary metabolites such as terpenes, polyphenols, tannins and polysaccharides, which are often abundant in the foliage of perennials species, were related (Scott and Playford, 1996). As a consequence, many tree species require more complex extraction methods than annual plants (Shepherd et al, 2002). In this study, an efficient mini-scale DNA extraction method, modified from CTAB procedure (Doyle and Doyle, 1990) for rapid isolation of DNA genomic from five tropical forest tree species, Copaifera langsdorffii, Hymenaea courbaril, Eugenia uniflora, Tabebuia roseo alba and Cariniana estrellensis was developed.…”