Divergência genética e quantificação de compostos fenólicos em progênies de canafístula

Abstract

Canafistula (Peltophorum dubium) is a perennial plant which has a lot of desirable characteristics for many applications, such as in construction, furniture industry, reforestation of degraded areas, in the composition of drug products, and other. Considering the promising character of the species and its potential of generating employment and income, it was objected to verify genetic divergence among canafistula progenies, based on phenolic compounds, for the identification of promising genotypes to be used in breeding program. The experiment was developed in the Universidade Federal da Grande Dourados. It was evaluated 30 canafistulas’ progenies which came from Serra da Bodoquena - MS, Serra de Maracajú - MS, Serra das Monções - MS and Lavras - MG headquarters. For the genectic divergence study it was used the average Euclidean distance as dissimilarity measure and average distance (UPGMA) to identify the similarity among groups. The largest genetic divergence was verified between MG23 and MG29 accesses, while the smallest genetic divergence was found between MS09 and MS23 accesses. The characteristics contributed similarly to explain the genetic divergence amog these 30 progenies. In the avaliation of formed groups using the technique of UPGM, it was observed the formation of 5 groups. Progenies belonging to I group (MS09, MS23, MG18, MS03, MS30, MS35, MS22 e MS34) and V (MG11, MS08, MS02 e MS29) are the most promising to the increase of genetic variability.