GROUPING OF CATINGUEIRA GENOTYPES BASED ON MORPHOLOGICAL CHARACTERISTICS

摘要

The objective of this study was to obtain information about the characteristics of Poincianella pyramidalis (Tul.) through morphological characters. We have analyzed eleven genotypes of P. pyramidalis , at least 100 meters far apart among themselves, located in the municipalities of Santa Teresinha and Castro Alves, in the State of Bahia, Brazil. The genotypes were identified with aluminum plaques, georeferenced, evaluated according to their height and diameterat ground level, number of tillers per plant and fruit production. One hundred fruits for each genotype were collected and measured relative to their length, width (in the proximal, medial and distal positions), thickness and number of loci.Analyses have been performed: descriptive, Pearson correlation between the variables in addition to the cluster analysis for qualitative variables and subsequent clustering to define the genetic diversity among the species genotypes using the Euclidean average linkage and a cutoff point as an "NbClust" package. The results showed variability among genotypes, with the formation of eleven major groups of genetic dissimilarity. The largest genetic distances are among the G7ST and the G1ST genotypes located in the municipality of and the G1CA and the G8ST genotypes in the municipalities of Castro Alves and Santa Teresinha. The variable with the greatest contribution to divergence was the one with the number of tillers.