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vol.31 número1Caracterização agronômica e molecular de genótipos diplóides melhorados de bananeiraDiversidade e estrutura genética de populações em cajazeira (spondias mombin l.) no nordeste do Brasil índice de autoresíndice de assuntospesquisa de artigos
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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945versão On-line ISSN 1806-9967

Resumo

OLIVEIRA, Marcos Góes et al. Genetic diversity of barbados cherry (Malphigia emarginata D. C.), with RAPD molecular markers and morpho-agronomical characteristics. Rev. Bras. Frutic. [online]. 2009, vol.31, n.1, pp.162-170. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452009000100023.

The knowledge on genetic variability and the relationship among different Barbados cherry accesses is important to maximize the resources for the future genetic breeding. The objective of this work was to determine the genetic variability among 48 accessions of Barbados cherry evaluated using RAPD as DNA markers and morpho-agronomical characteristics. It was used 25 primers, making it possible to obtain 108 markers and to generate 92 different polymorphic products. The obtained markers were of analyzed by the method of Tocher and UPGMA what generated a dendrogram using the Jaccard index. There was a concordance among the studied methods with the formation of 14 groups. The accessions ACE 023 and ACE 033 were the most distinct, presenting a genetic dissimilarity of 0.58. The results allowed to us to conclude that RAPD marker associated with morpho-agronomical characteristics were efficient to discriminate the genetic relationship among the accessions of Barbados cherry and the divergent accessions should be useful in the use of genetic breeding and six of them were recommended for future clonal evaluation as varieties and clonal propagation.

Palavras-chave : polymorphic; acid ascorbic content; genetic variability.

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