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| Registros recuperados : 121 | |
| 7. |  | FERREIRA, J. A.; CUNHA, M. O. da; ASSIS, G. M. L. de; CAMPOS, T. de. Certificação molecular de hibridação intraespecífica em amendoim forrageiro por meio de marcadores SSRS. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 4 p. 1 CD-ROM.| Biblioteca(s): Embrapa Acre. |
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| 8. | | SILVA, V. S.; MARTINS, K.; CAMPOS, T. de; WADT, L. H. de O. Diversidade genética de populações naturais de castanheira (Bertholletia excelsa) com marcadores ISSR. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 4 p. 1 CD-ROM.| Biblioteca(s): Embrapa Acre. |
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| 14. | | CAVALCANTE, L. do N.; SOUZA, C. S. de; CAMPOS, T. de. Estudo da diversidade genética de acessos de seringueira das coleções da Embrapa. In: SEMINÁRIO DA EMBRAPA ACRE DE INICIAÇÃO CIENTÍFICA E PÓS-GRADUAÇÃO, 1., 2018, Rio Branco, AC. Pesquisa e inovação para a Agropecuária no Acre: anais. Rio Branco, AC: Embrapa Acre, 2019. p. 21-26. Apresentação oral. (Embrapa Acre. Eventos técnicos & científicos, 1).| Biblioteca(s): Embrapa Acre. |
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| 15. | | ASSIS, G. M. L. de; CAMPOS, T. de; BIANCHINI, P. C.; MATOS, L. R. A. de. Banco de germoplasma de amendoim forrageiro: conservação e utilização. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 4 p. 1 CD-ROM.| Biblioteca(s): Embrapa Acre. |
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| 18. | | FERREIRA, J. A.; SILVA, H. F.; ASSIS, G. M. L. de; CAMPOS, T. de. Caracterização da diversidade genética de genitores de amendoim forrageiro por meio de marcadores microssatélites. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 4 p. 1 CD-ROM.| Biblioteca(s): Embrapa Acre. |
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| 19. | | SIVIERO, A.; BERGO, C. L.; SILVA, L. M. da; KLEIN, M. A.; CAMPOS, T. de. Caracterização de etnovariedades de mandioca utilizadas na produção de farinha de Cruzeiro do Sul. In: CONGRESSO BRASILEIRO DE MANDIOCA, 17.; CONGRESSO LATINO-AMERICANO E CARIBENHO DE MANDIOCA, 2., 2018, Belém, PA. Anais... Belém, PA: SBM, 2018. p. 197-200.| Biblioteca(s): Embrapa Acre. |
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| 20. | | CAMPOS, T. de; AZÊVEDO, H. S. da S.; SILVA, L. M. da. A importância da diversidade genética em plantas. Jornal Dia de Campo, Brasília, DF, Artigos Especiais, 04 abr. 2016. Artigo eletrônico. Publicado também no formato impresso em: O Rio Branco, Rio Branco, Opinião, 13 fev. 2016.| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 121 | |
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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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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
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653 $aMétodo Neighbor-Joining
653 $aMétodo UPGMA
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653 $aRoraima
653 $aSão Paulo
653 $aVariación genetica
653 $aYuca
700 1 $aAZÊVEDO, H. S. F. da S.
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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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