Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/946112
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dc.contributor.authorMARTUSCELLO, J. A.pt_BR
dc.contributor.authorBRAZ, T. G. dos S.pt_BR
dc.contributor.authorJANK, L.pt_BR
dc.contributor.authorCUNHA, D. de N. F. V. dapt_BR
dc.contributor.authorFONSECA, D. M.pt_BR
dc.date.accessioned2013-01-23T11:11:11Zpt_BR
dc.date.available2013-01-23T11:11:11Zpt_BR
dc.date.created2013-01-23pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, v.41, n.9, p.1975-1982, 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/946112pt_BR
dc.descriptionThe objective of this experiment was to evaluate the genetic divergence between hybrids obtained from 10 sexual genitors of the Panicum maximum breeding program at Embrapa Beef Cattle. For this, the following morphological descriptors were used: plant height, growth habit, leaf aspect, leaf waxiness, hair density on the sheath (DePB) and blade (DePL), degree of hardiness of the hairs on the leaf sheath (DuPB) and blade (DuPL) and length of hairs on the sheath and blade. The characteristics growth habit and waxiness were not included in the analysis for being invariant. The phenotypic correlations were low and, therefore, not used to eliminate variables. By the principal component analysis, an 84.3% accumulation of the variation was observed until the fourth component. The last four principal components presented an estimate lower than 0.7 and allowed the identification of the variables DePB, DuPB and DuPL as the least important for diversity studies. The morphological characters used were not efficient to distinguish the progenies, but allowed the formation of morphological groups that converged with the graphic analysis of the principal components. An apparent error rate of 17.04% was observed in the classification of the individuals in the groups and 55.5% in the classification of the individuals in the progenies. The individuals in the P. maximum half-sib progenies are genetically divergent, but may not be grouped with only the descriptors used in this experiment. The pubescence characteristics were the least important in the discrimination of the genotypes.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectDiscriminating analysispt_BR
dc.subjectOptimization methodpt_BR
dc.subjectPrincipal componentspt_BR
dc.subjectRelative importance of the characteristicspt_BR
dc.titleGenetic diversity based on morphological data in Panicum maximum hybrids.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-02-15T11:11:11Zpt_BR
riaa.ainfo.id946112pt_BR
riaa.ainfo.lastupdate2013-02-15pt_BR
dc.contributor.institutionJANAINA AZEVEDO MARTUSCELLO, Departamento de Zootecnia da Universidade Federal de São João Del-Rei.; THIAGO GOMES DOS SANTOS BRAZ, Programa de Pós-graduação em Zootecnia da Universidade Federal de Viçosa; LIANA JANK, CNPGC; DANIEL DE NORONHA FIGUEIREDO VIEIRA DA CUNHA, Departamento de Zootecnia da Universidade Federal de São João Del-Rei.; DILERMANDO MIRANDA DA FONSECA, Departamento de Zootecnia da Universidade Federal de Viçosa.pt_BR
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