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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
05/04/2004 |
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Data da última atualização: |
05/04/2004 |
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Autoria: |
CARVALHO, L. J. C. B.; SCHAAL, B. A.; FUKUDA, W. M. G. |
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Afiliação: |
Embrapa Mandioca e Fruticultura, Cruz das Almas. |
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Título: |
Genetic diversity of cassava (Manihot esculenta crantz) in a germplasm collection assessed by rapd markers. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Revista Brasileira de Mandioca, Cruz das Almas, v. 17 p.13, nov., 1998., Suplemento. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Cassava germplasm individuals from collection representing different agroecological habitas of Brazil was assessed by RAPD markers. Fifty nine cassava accessions representing the World core collection and seven agroecological habitats in one of the center of diversity of cassava were used. Phenetic analysis discriminated nine distinct clusters from Colombia, two clusters from Brazil and five clusters of distinct habitats in Brazil. None of other representative individuals from the other countries showed distinct clusters. This structures represents the genetic diversity of cassava germplasm in the World Core Collection, and confirms the high genetic diversity different regions in Brazil. It is also inferred that land races originated from Cerrados, Litoral, and Sub Tropics are well represented in the World Core Collection, but not the other habitats. Degree of genetic diversity within individuals indicated higher values for nucleotide diversity (2.7%) in the Brazillian collection than in the World Core Collection (2.1%). From the different habitats of cassava in Brazil, it is possible to distinguish three major source of genetic diversity. One, the Cerrados area, with limited diversity (0.6% of nucleotide diversity per site in the genome), a second source of variation with high genetic diversity in Caatinga and Humid tropics regions, and a third source of variation with intermedian genetic diversity in Sub tropics, Litoral, and Semi Arid regions.Divergence between the different habitats varied from 0.3% between Brazil and Cuba, but 0.6% between Brazil and Malaysia. Accessions from Cuba are more close to accessions from Colombia then the other countries.The highest divergente between genetic materials from different habitats is observed between Wide adapted land races in Brazil and individuals from Malaysia, and between Litoral habitat in Brazil and Malaysia. This indicates that the germplasm in Malaysia show substantial differences from the one in Brazil, and may be provenance from different region in South America. MenosAbstract: Cassava germplasm individuals from collection representing different agroecological habitas of Brazil was assessed by RAPD markers. Fifty nine cassava accessions representing the World core collection and seven agroecological habitats in one of the center of diversity of cassava were used. Phenetic analysis discriminated nine distinct clusters from Colombia, two clusters from Brazil and five clusters of distinct habitats in Brazil. None of other representative individuals from the other countries showed distinct clusters. This structures represents the genetic diversity of cassava germplasm in the World Core Collection, and confirms the high genetic diversity different regions in Brazil. It is also inferred that land races originated from Cerrados, Litoral, and Sub Tropics are well represented in the World Core Collection, but not the other habitats. Degree of genetic diversity within individuals indicated higher values for nucleotide diversity (2.7%) in the Brazillian collection than in the World Core Collection (2.1%). From the different habitats of cassava in Brazil, it is possible to distinguish three major source of genetic diversity. One, the Cerrados area, with limited diversity (0.6% of nucleotide diversity per site in the genome), a second source of variation with high genetic diversity in Caatinga and Humid tropics regions, and a third source of variation with intermedian genetic diversity in Sub tropics, Litoral, and Semi Arid regions.Divergence between ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02547naa a2200145 a 4500
001 1651811
005 2004-04-05
008 1998 bl uuuu u00u1 u #d
100 1 $aCARVALHO, L. J. C. B.
245 $aGenetic diversity of cassava (Manihot esculenta crantz) in a germplasm collection assessed by rapd markers.
260 $c1998
520 $aAbstract: Cassava germplasm individuals from collection representing different agroecological habitas of Brazil was assessed by RAPD markers. Fifty nine cassava accessions representing the World core collection and seven agroecological habitats in one of the center of diversity of cassava were used. Phenetic analysis discriminated nine distinct clusters from Colombia, two clusters from Brazil and five clusters of distinct habitats in Brazil. None of other representative individuals from the other countries showed distinct clusters. This structures represents the genetic diversity of cassava germplasm in the World Core Collection, and confirms the high genetic diversity different regions in Brazil. It is also inferred that land races originated from Cerrados, Litoral, and Sub Tropics are well represented in the World Core Collection, but not the other habitats. Degree of genetic diversity within individuals indicated higher values for nucleotide diversity (2.7%) in the Brazillian collection than in the World Core Collection (2.1%). From the different habitats of cassava in Brazil, it is possible to distinguish three major source of genetic diversity. One, the Cerrados area, with limited diversity (0.6% of nucleotide diversity per site in the genome), a second source of variation with high genetic diversity in Caatinga and Humid tropics regions, and a third source of variation with intermedian genetic diversity in Sub tropics, Litoral, and Semi Arid regions.Divergence between the different habitats varied from 0.3% between Brazil and Cuba, but 0.6% between Brazil and Malaysia. Accessions from Cuba are more close to accessions from Colombia then the other countries.The highest divergente between genetic materials from different habitats is observed between Wide adapted land races in Brazil and individuals from Malaysia, and between Litoral habitat in Brazil and Malaysia. This indicates that the germplasm in Malaysia show substantial differences from the one in Brazil, and may be provenance from different region in South America.
700 1 $aSCHAAL, B. A.
700 1 $aFUKUDA, W. M. G.
773 $tRevista Brasileira de Mandioca, Cruz das Almas$gv. 17 p.13, nov., 1998., Suplemento.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| 2. |  | CARVALHO, L. J. C. B. Book reviews: Guarino, L.; Rao, V.R.; Reid, R., eds. Collecting plant genetic diversity: technical guidelines. Plant Science Bulletin, Saint Louis, v.42, n.2, p.42, 1996. Resumo| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | CARVALHO, L. J. C. B. The storage roots of cassava. In: Collaborative crop researc : an invited symposium 27-29 Nov.2000, San Diego, CA. Brasília: Embrapa genetic Resources and biotechnology, 2000. ( Embrapa Genetic Resources and Biotechnology. Documentos, 52) 1 CD-ROM.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 11. | | BUSO, G. S. C.; CARVALHO, L. J. C. B.; NASSAR, N. M. A. Analysis of Genetic relationships amongs Manihot interspecific hybrids and their parental species, using RAPD assay. In: THE CASSAVA biotechnology network: proceedings of the second international scientific meeting, Bogor, Indonesia, 22-26 August 1994. Cali: CIAT, 1995, V.1, p.101-105. (CIAT. Working Document, n.150). p.101-105 (CIAT. Working Document, n.150).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 15. | | SILVA, R. C.; CAMPOS, P. F.; CARVALHO, L. J. C. B. Purification of chromoplast_associated proteins from storage root of cassava (Manihot esculenta crantz). In: ANNUAL MEETING OF THE SBBq, 36.; IUBMB CONFERENCE, 10., 2007, Salvador, BA. Infectious diseases: biochemistry of parasites, vectors and hosts: program and abstracts. São Paulo, SP: Brazilian Society for Biochemistry and Molecular Biology, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 96 | |
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