Author(s): RIBEIRO, I. C. N. dos S.; LIMA NETO, F. P.; SANTOS, C. A. F.

Summary: Allelic patterns and genetic distances were examined in a collection of 103 foreign and Brazilian mango (Mangifera indica) accessions in order to develop a reference database to support cultivar protection and breeding programs. An UPGMA dendrogram was generated using Jaccard coefficients from a distance matrix based on 50 alleles of 12 microsatellite loci. The base pair number was estimated by the method of inverse mobility. The cophenetic correlation was 0.8. The accessions had a coefficient of similarity of from 30 to 100%, which reflects high genetic variability. Three groups were observed in the UPGMA dendrogram; the first group was formed predominantly by foreign accessions, the second group was formed by Brazilian accessions, and the Dashehari accession was isolated from the others. The 50 microsatellite alleles did not separate all 103 accessions, indicating that there are duplicates in this mango collection. These 12 microsatellites need to be validated in order to establish a reliable set to identify mango cultivars.

Publication year: 2012

Types of publication: Journal article

Unit: Embrapa Semi-arid Region

Keywords: Dendrogram, Genotipagem, Genotyping, Manga, Mangifera Indica, Melhoramento genético, Variability, Variedade