Divergência genética entre acessos de mangabeira (Hancornia speciosa Gomes)

Abstract

Hancornia speciosa Gomes is a native plant of Brazil of great economical, social and cultural importance in their areas of occurrence. The concern with the devastation of the specie natural areas resulted in the establishment of an Active Germplasm Bank in Sergipe, the main producing state. The objective of this work was to characterize the genetic diversity of this Germplasm Bank using RAPD analysis. The use of 12 RAPD primers allowed the production of 106 bands, in which 92 were polymorphic (86.79%). Different similarity coefficients were detected, with means of 0.40 (± 0.04) between them. The genetic amplitude varied between 0.08 (± 0.04) and 0.60 (± 0.05). The M1 (Pará) and M14 (Bahia) individuals were the most different ones within the population, and the individuals pairs M9 and M10 (Bahia) were the most similar ones. Three individuals pairs were identified as the most genetically divergent ones (M2, M4 and M14) and are indicated for future studies.