title: Genetic divergence in the common bean (Phaseolus vulgaris L.) in the Cerrado-Pantanal ecotone.
abstract: Evaluating genetic diversity among genotypes is important for providing parameters for the identification of superior genotypes, because the choice of parents that form segregating populations is crucial. Our objectives were to i) evaluate agronomic performance; ii) compare clustering methods; iii) ascertain the relative contributions of the variables evaluated; and iv) identify the most promising hybrids to produce superior segregating populations. The trial was conducted in 2015 at the State University of Mato Grosso do Sul, Brazil. We used a randomized block design with three replications, and recorded the days to emergence, days to flowering, days to maturity, plant height, number of branches, number of pods, number of seeds per pod, weight of 100 grains, and productivity. The genetic diversity of the genotypes was determined by cluster analysis using two dissimilarity measures: the Euclidean distance and the standardized mean Mahalanobis distance using the Ward hierarchical method. The genotypes 'CNFC 10762', 'IAC Dawn', and 'BRS Style' had the highest grain yields, and clusters that were based on the Euclidean distance differed from those based on the Mahalanobis distance, the second being more precise. The yield grain character has greater relevance to the dispute. Hybrids with a high heterotic effect can be obtained by crossing 'IAC Alvorada' with 'CNFC 10762', 'IAC Alvorada' with 'CNFC 10764', and 'BRS Style' with 'IAC Alvorada'.
authors.affiliation: Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brasil flavia_uems@hotmail.com.
authors.forename: F A
authors.initials: FA
authors.lastname: da Silva
authors.affiliation: Departamento de Fitotecnia, Universidade Estadual do Mato Grosso do Sul, Aquidauana, MS, Brasil.
authors.forename: A M
authors.initials: AM
authors.lastname: Corrêa
authors.affiliation: Departamento de Agronomia, Universidade Federal do Mato Grosso do Sul, Chapadão do Sul, MS, Brasil.
authors.forename: P E
authors.initials: PE
authors.lastname: Teodoro
authors.affiliation: Departamento de Fitotecnia, Universidade Estadual do Mato Grosso do Sul, Aquidauana, MS, Brasil.
authors.forename: K V
authors.initials: KV
authors.lastname: Lopes
authors.affiliation: Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brasil.
authors.forename: C C G
authors.initials: CC
authors.lastname: Corrêa
mesh_terms: D000383:Agriculture; D001938:Brazil; D016000:Cluster Analysis; D000069599:Crop Production / Q000379:methods; D002523:Edible Grain / Q000235:genetics / Q000254:growth & development; D040961:Genetic Drift; D014644:Genetic Variation / Q000235:genetics; D005838:Genotype; D027805:Phaseolus / Q000235:genetics* / Q000254:growth & development*; D010641:Phenotype; D012639:Seeds / Q000235:genetics / Q000254:growth & development