Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131056
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dc.contributor.authorCOSTA, N. A.
dc.contributor.authorAZÊVEDO, H. S. F. da S.
dc.contributor.authorSILVA, L. M. da
dc.contributor.authorCUNHA, E. F. M.
dc.contributor.authorSIVIERO, A.
dc.contributor.authorCAMPOS, T. de
dc.date.accessioned2021-04-05T15:34:15Z-
dc.date.available2021-04-05T15:34:15Z-
dc.date.created2021-04-05
dc.date.issued2020
dc.identifier.citationBioscience Journal, v. 36, p. 22-35, Nov./Dec. 2020. Supp. 1.
dc.identifier.issn1981-3163
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1131056-
dc.descriptionCassava is one of the most important subsistence crops in tropical regions. It is necessary to preserve and to know the genetic diversity existent for the adequate use of genetic resources. The evaluation of genetic diversity among genotypes results in information about potential parents in breeding programs, allows duplicates identification, and facilitates germplasm exchange between research institutions. The objective of this study was to characterize the genetic diversity of cassava accessions of North Brazil region. A total of 106 accessions were analyzed using ten microsatellite markers. The genetic parameters estimated were: expected heterozygosity (HE), observed heterozygosity (HO) and polymorphic information content (PIC). Clustering was performed using the UPGMA and Neighbor-Joining (NJ) method. Bayesian analysis, analysis of principal coordinates and identification of a core collection were also used. The ten loci amplified 8,40 alleles on average. The average heterozygosity estimates were: HE = 0.71, HO = 0.58 and PIC = 0.72. Genetic distances ranged from 0.158 to 0.908. Six (5,66%) accesses were redundant. Clustering and dispersion analysis didn?t differentiate bitter from sweet cassava, and there wasn?t correlation between groups and collect origin. The core collection consisted of 22 individuals that represented 94% of total allelic diversity and 20,75% of the base collection. The results indicate high dissimilarity between the accessions and allowed the detection of redundant genotypes, showing the use of genetic markers as informative tools for the management of collections.
dc.language.isoeng
dc.rightsopenAccesseng
dc.subjectManioc
dc.subjectYuca
dc.subjectMarcador microssatélite
dc.subjectHeterozigosidade
dc.subjectMétodo UPGMA
dc.subjectMétodo Neighbor-Joining
dc.subjectAnálise bayesiana
dc.subjectBayesin analysis
dc.subjectFitomejoramiento
dc.subjectVariación genetica
dc.subjectRepeticiones de microsatélite
dc.subjectHeterocigosidad
dc.subjectAcre
dc.subjectAmazonas
dc.subjectRoraima
dc.subjectSão Paulo
dc.titleMolecular characterizaion and core collection evaluation of Manihot esculenta Crantz.
dc.typeArtigo de periódico
dc.subject.thesagroMandioca
dc.subject.thesagroManihot Esculenta
dc.subject.thesagroMelhoramento Genético Vegetal
dc.subject.thesagroVariação Genética
dc.subject.thesagroMarcador Genético
dc.subject.nalthesaurusCassava
dc.subject.nalthesaurusPlant breeding
dc.subject.nalthesaurusGenetic variation
dc.subject.nalthesaurusMicrosatellite repeats
dc.subject.nalthesaurusHeterozygosity
riaa.ainfo.id1131056
riaa.ainfo.lastupdate2021-04-05
dc.identifier.doihttp://dx.doi.org/ BJ-v36n0a2020-48247
dc.contributor.institutionNATHALIA ALMEIDA COSTA, Universidade Federal do Acre (Ufac); HELLEN SANDRA FREIRES DA SILVA AZÊVEDO, Rede Bionorte; LUCIELIO MANOEL DA SILVA, CPAF-AC; ELISA FERREIRA MOURA CUNHA, CPATU; AMAURI SIVIERO, CPAF-AC; TATIANA DE CAMPOS, CPAF-AC.
Aparece nas coleções:Artigo em periódico indexado (CPAF-AC)

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