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| 2. |  | YOUNG, J. M.; KUYKENDALL, L. D.; ROMERO, E. M.; KERR, A.; SAWADA, H. A revision of Rhizobium Frant 1889, with an emended description of the genus, and the inclusion of all species of Agrobacterium Conn 1942 and Allorhizobium undicola de Lajudie et al. 1998 as new combinations: Rhizobium radiobacter, R. rhizogenes, R. rubi, R. undicola and R. vitis International Journal of Systematic and Evolutionary Microbiology., v. 51, p. 89-103, 2001.| Biblioteca(s): Embrapa Agrobiologia. |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
05/04/2021 |
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Data da última atualização: |
28/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
COSTA, N. A.; AZÊVEDO, H. S. F. da S.; SILVA, L. M. da; CUNHA, E. F. M.; SIVIERO, A.; CAMPOS, T. de. |
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Afiliação: |
NATHALIA 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. |
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Título: |
Molecular characterizaion and core collection evaluation of Manihot esculenta Crantz. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Bioscience Journal, v. 36, p. 22-35, Nov./Dec. 2020. Supp. 1. |
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ISSN: |
1981-3163 |
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DOI: |
http://dx.doi.org/ BJ-v36n0a2020-48247 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava 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. MenosCassava 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 detec... Mostrar Tudo |
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Palavras-Chave: |
Acre; Amazonas; Análise bayesiana; Bayesin analysis; Fitomejoramiento; Heterocigosidad; Heterozigosidade; Manioc; Marcador microssatélite; Método Neighbor-Joining; Método UPGMA; Repeticiones de microsatélite; Roraima; São Paulo; Variación genetica; Yuca. |
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Thesagro: |
Mandioca; Manihot Esculenta; Marcador Genético; Melhoramento Genético Vegetal; Variação Genética. |
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Thesaurus NAL: |
Cassava; Genetic variation; Heterozygosity; Microsatellite repeats; Plant breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222341/1/27114.pdf
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Marc: |
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008 2020 bl uuuu u00u1 u #d
022 $a1981-3163
024 7 $ahttp://dx.doi.org/ BJ-v36n0a2020-48247$2DOI
100 1 $aCOSTA, N. A.
245 $aMolecular characterizaion and core collection evaluation of Manihot esculenta Crantz.$h[electronic resource]
260 $c2020
520 $aCassava 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.
650 $aCassava
650 $aGenetic variation
650 $aHeterozygosity
650 $aMicrosatellite repeats
650 $aPlant breeding
650 $aMandioca
650 $aManihot Esculenta
650 $aMarcador Genético
650 $aMelhoramento Genético Vegetal
650 $aVariação Genética
653 $aAcre
653 $aAmazonas
653 $aAnálise bayesiana
653 $aBayesin analysis
653 $aFitomejoramiento
653 $aHeterocigosidad
653 $aHeterozigosidade
653 $aManioc
653 $aMarcador microssatélite
653 $aMétodo Neighbor-Joining
653 $aMétodo UPGMA
653 $aRepeticiones de microsatélite
653 $aRoraima
653 $aSão Paulo
653 $aVariación genetica
653 $aYuca
700 1 $aAZÊVEDO, H. S. F. da S.
700 1 $aSILVA, L. M. da
700 1 $aCUNHA, E. F. M.
700 1 $aSIVIERO, A.
700 1 $aCAMPOS, T. de
773 $tBioscience Journal$gv. 36, p. 22-35, Nov./Dec. 2020. Supp. 1.
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Embrapa Acre (CPAF-AC) |
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