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Revista Brasileira de Fruticultura
On-line version ISSN 1806-9967
SOUZA, Carolina Maria Palácios de et al. Evaluation of genetics dissimilarity in banana tree genotypes (Musa spp.) by means of RAPD markers. Rev. Bras. Frutic. [online]. 2008, vol.30, n.2, pp. 419-424. ISSN 1806-9967. http://dx.doi.org/10.1590/S0100-29452008000200026.
Banana is a very important social and economic crop. The introduction of of banana cultivars was initiated through the Plant Genetics Laboratory at UENF. Cultivars from Embrapa Cassava and Tropical Fruits and Western Amazon were introduced. The objective of the present work was to analyze the genetic dissimilarity between 21 cultivars and obtain the correct identification of the possible genotypes introduced at UENF. The following genotypes were evaluated: Fhia 18, Prata Anã, UENF 1526, Pacovan, Caipira, Maçã, UENF 1527, Nanicão, Thap Maeo, UENF 1528, UENF 1529, Grande Naine, Ambrósia, Bucaneiro, Calipso, PV42-68, PV42-85, PV42-142, ST12-31, Calcutta and BB da França. The genetic dissimilarity was carried out using RAPD molecular markers. Thirty-one primers were used, generating a total of 94 bands. The RAPD molecular markers were capable to accurately reveal the existence of genetics diversity among the 21 banana genotypes. For data interpretation, the Jaccard index was used. Based on cluster analysis UPGMA and the Tocher method, the dissimilarity could be observed by the presence of similar and dissimilar genotypes.
Keywords : dissimilarity; molecular markers; banana tree.