Molecular characterization and core collection evaluation of Manihot esculenta Crantz.

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dc.contributorNATHALIA ALMEIDA COSTA, UNIVERSIDADE FEDERAL DO ACRE
dc.contributorHELLEN SANDRA FREIRES DA SILVA AZÊVEDO, FUNDAÇÃO OSWALDO CRUZ
dc.contributorLUCIELIO MANOEL DA SILVA, CPAF-AC
dc.contributorELISA FERREIRA MOURA CUNHA, CPATU
dc.contributorAMAURI SIVIERO, CPAF-AC
dc.contributorTATIANA DE CAMPOS, CPAF-AC.
dc.creatorCOSTA, N. A.
dc.creatorAZÊVEDO, H. S. F. da S.
dc.creatorSILVA, L. M. da
dc.creatorCUNHA, E. F. M.
dc.creatorSIVIERO, A.
dc.creatorCAMPOS, T. de
dc.date2021-04-05T15:34:15Z
dc.date2021-04-05T15:34:15Z
dc.date2021-04-05
dc.date2020
dc.date.accessioned2026-06-30T22:52:19Z
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.identifierBioscience Journal, v. 36, p. 22-35, Nov./Dec. 2020. Supp. 1.
dc.identifier1981-3163
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1131056
dc.identifierhttp://dx.doi.org/ BJ-v36n0a2020-48247
dc.identifier.urihttp://hdl.handle.net/123456789/369937
dc.languageeng
dc.rightsopenAccess
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.subjectMandioca
dc.subjectManihot Esculenta
dc.subjectMelhoramento Genético Vegetal
dc.subjectVariação Genética
dc.subjectMarcador Genético
dc.subjectCassava
dc.subjectPlant breeding
dc.subjectGenetic variation
dc.subjectMicrosatellite repeats
dc.subjectHeterozygosity
dc.titleMolecular characterization and core collection evaluation of Manihot esculenta Crantz.
dc.typeArtigo de periódico

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