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dc.contributor.authorFachinetto, Juliana Mariapt_BR
dc.contributor.authorDall'Agnol, Miguelpt_BR
dc.contributor.authorSouza, Cleber Henrique Lopes dept_BR
dc.contributor.authorWeiler, Roberto Luispt_BR
dc.contributor.authorSimioni, Carinept_BR
dc.date.accessioned2018-11-28T02:45:48Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn1516-3598pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/185189pt_BR
dc.description.abstractThe objective of this study was to assess the genetic diversity among accessions of Paspalum notatum based on morphological marker traits and identify those morphological traits that contribute most to the variability among accessions. Fifty-three accessions were evaluated for the following traits: length, width, color, and pubescence of sheath; length, width, insertion angle, color of midrib, and pubescence of leaves; number, length, and angle of racemes; length of flowering stems; and plant growth habit (erect or prostrate). Multivariate analysis of the quantitative morphological data based on the Mahalanobis distance and UPGMA method grouped the accessions into 19 heterogeneous clusters. The relative contribution of each trait to cluster formation was obtained using the Singh method. Qualitative morphological traits were used to construct a dendrogram based on Jaccard’s similarity, generating 13 clusters. Based on the morphological traits investigated, there is high genetic variation among accessions of P. notatum, demonstrating that these accessions have a good potential for a breeding program. Length of racemes, width of sheath, length of flowering stems, and length of leaves were found to contribute most to the variability among accessions. A number of traits contributed to a lesser degree. The set of characters used are representative of the vast phenotypic plasticity observed in P. notatum, a diversity which is likely to be related to the species apomictic form of reproduction and the origin of the accessions.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofRevista brasileira de zootecnia. Viçosa, MG. Vol. 46, n.9 (set. 2017), p. 714-721pt_BR
dc.rightsOpen Accessen
dc.subjectForage grassen
dc.subjectVariação genéticapt_BR
dc.subjectGenetic improvementen
dc.subjectPaspalum notatumpt_BR
dc.subjectGrama-batataispt_BR
dc.subjectMultivariate analysisen
dc.subjectGermoplasmapt_BR
dc.titleGenetic diversity of a Paspalum notatum Flügge germplasm collectionpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001079287pt_BR
dc.type.originNacionalpt_BR


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