PHYLOGENETIC STUDIES OF SOME SPECIES OF THE GENUS COFFEA .2. NUMERICAL-ANALYSIS OF ISOENZYMATIC DATA

Thirteen species of Coffea were studied for five enzymes systems, incl uding alpha and beta esterase, alkaline phosphatase, acid phosphatase, malate dehydrogenase and acid dehydrogenase. Three coefficients of si milarity: Simple Matching, Jaccard and Ochiai and three different clus tering methods: Single Linkage, Complete Linkage and Unweighted Pair G roup, using Arithmetic Averages (UPGMA) were used to analyse the data. The phylogenetic relationships among the twelve diploid species and b etween them and the tetraploid species C. arabica showed that similari ty among species of the same subsection is not always greater than amo ng species of different subsections. In addition, although there are s everal similarity groups in common, established by isoenzymatic polymo rphism, morphological characteristics, chemical data, crossability and geographic distribution, there is no common trend among the phylogene tic relationships as indicated by all these different evaluating proce dures.