Genetic dissimilarity among sweet potato genotypes using morphological and molecular descriptors

• Published in: Acta scientiarum. Agronomy Vol. 39; no. 4; pp. 447 - 455
• Main Authors: Andrade, Elisângela Knoblauch Viega de, Andrade júnior, Valter Carvalho de, Laia, Marcelo Luiz de, Fernandes, José Sebastião Cunha, Oliveira, Altino Junior Mendes, Azevedo, Alcinei Mistico
• Format: Journal Article
• Language: English; Portuguese
• Published: Maringa Editora da Universidade Estadual de Maringá - EDUEM 01.10.2017; Eduem (Editora da Universidade Estadual de Maringá)
• Subjects: AGRONOMY; Breeding; genetic diversity; Genetic variability; Genotypes; Germplasm; germplasm bank; Ipomoea batatas; Ipomoea batatas (L.) Lam; Microsatellites; morphological markers; Morphology; Parents; Potatoes; Primers; Sweet potatoes; Variability; microsatellites; genetic diversity; microssatélites; morphological markers; Ipomoea batatas (L.) Lam; batatas (L.) Lam; diversidade genética; marcadores morfológicos; banco de germoplasma; germplasm bank
• ISSN: 1679-9275; 1807-8621; 1807-8621
• DOI: 10.4025/actasciagron.v39i4.32847

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.