Genetic Dissimilarity among Sweet Potato Genotypes using Morphological and Molecular Descriptors

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This study aimed to evaluate the genetic dissimilarity among sweet potato genotypes using morphological and molecular descriptors. The experiment was conducted in the Olericulture Sector at Federal University of Jequitinhonha and Mucuri Valleys (UFVJM) and evaluated 60 sweet potato  genotypes. For morphological characterization, 24 descriptors were used. For molecular characterization, 11 microsatellite primers specific for sweet potatoes were used, obtaining 210 polymorphic bands. Morphological and molecular diversity was obtained by dissimilarity matrices based on the coefficient of simple matching and the Jaccard index for morphological and molecular data, respectively. From these matrices, dendrograms were built. There is a large amount of genetic variability among sweet potato genotypes of the germplasm bank at UFVJM based on morphological and molecular characterizations. There was no duplicate suspicion or strong association between morphological and molecular analyses. Divergent accessions have been identified by molecular and morphological analyses, which can be used as parents in breeding programmes to produce progenies with high genetic variability.

Authors: 
Elisângela Knoblauch Viega de Andrade
Authors: 
Valter Carvalho de Andrade
Authors: 
Marcelo Luiz de Laia
Authors: 
José Sebastião Cunha Fernandes
Authors: 
Altino Junior Mendes Oliveira
Authors: 
Alcinei Mistico Azevedo
Publisher: 
Acta Scientiarum. Agronomy
Year: 
2017