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Phylogenetic studies of some species of the genus Coffea. II - numerical analysis of isoenzymatic data

Catalina Romero Lopes

Departamento de Genética, Instituto de Biociências, Universidade Estadual "Júlio de Mesquita Filho", UNESP, Caixa Postal 502, 18618-000 Botucatu, SP, Brasil

ABSTRACT

Thirteen species of Coffea were studied for five enzymatic systems, inchiding alpha and beta esterase, alkaline phosphatase, acid phosphatase, malate dehydrogenase and acid dehydrogenase. Three coefficients of similarity: Simple Matching, Jaccard and Ochiai and three different chistering methods: Single Linkage, Complete Linkage and Unweighted Pair Group, using Arithmetic Averages (UPGMA) were used to analyse the data.
The phylogenetic relationships among the twelve diploid species and between them and the tetraploid specles C. arabica showed that similarity among species of the same subsection is not always greater than among species of different subsections. In addition, although there are several similarity groups in conunon, established by isoenzymatie polymorphism, morphological characteristics, chemical data, crossability and geographic distribution, there is no common trend among the phylogenetic relationships as indicated by all these different evahiating procedures.

Keywords: Phylogenetic studies; Coffea; Isoenzymatic.

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