Characterization and studies of genetic diversity of sweet potato from Paraguay
2024
Santacruz-Oviedo,Victoria R. | Enciso-Garay,Cipriano R. | Ruiz-Samudio,Fanni P. | Mendoza,Amalio R.
ABSTRACT The objective was to characterize the genotypes and obtain data on the genetic diversity of sweet potatoes. The experimental design was an RCBD with 26 treatments and three replications. It was evaluated total productivity, commercial and non-commercial root yield, number of roots per plant, biomass, root shape, and root color. The estimation of genetic diversity was obtained by the similar mean dissimilarity measure and, the delimitation group by the UPGMA dendogram. As a measure of proximity distances, the Euclidian Quadratic dissimilarity measure was used. and the number of clusters was determined using the Mojena Criterion. The collection was grouped into seven clusters. The highest number of accessions was grouped in cluster III, with nine accessions, cluster II with six accessions, cluster IV, with six accessions, cluster VII with two accessions and cluster I, V, and VII with one accession each. The greatest genetic distance was found between Morotí Guazú and Ib-019 with 40,443 and the most similar were Morado and Pyta guazú with a Euclidean dissimilarity measure value of 1098. Root productivity is the most important variable for genetic distance. The predominant skin color of the collection is cream and pale yellow flesh color.
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