Allelic database and accession divergence of a Brazilian mango collection based on microsatellite markers

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's coefficients fro...

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Bibliographic Details
Published in:Genetics and molecular research 2012-01, Vol.11 (4), p.4564-4574
Main Authors: Dos Santos Ribeiro, I C N, Lima Neto, F P, Santos, C A F
Format: Article
Language:English
Subjects:
Alleles
Brazil
Breeding
Conservation of Natural Resources
Databases, Genetic
Genes, Plant
Genetic Variation
Mangifera - genetics
Mangifera indica
Microsatellite Repeats
Plant Leaves - genetics
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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's 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 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.
ISSN:1676-5680
1676-5680
DOI:10.4238/2012.October.9.4