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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
05/04/2004 |
Data da última atualização: |
05/04/2004 |
Autoria: |
CARVALHO, L. J. C. B.; SCHAAL, B. A.; FUKUDA, W. M. G. |
Afiliação: |
Embrapa Mandioca e Fruticultura, Cruz das Almas. |
Título: |
Genetic diversity of cassava (Manihot esculenta crantz) in a germplasm collection assessed by rapd markers. |
Ano de publicação: |
1998 |
Fonte/Imprenta: |
Revista Brasileira de Mandioca, Cruz das Almas, v. 17 p.13, nov., 1998., Suplemento. |
Idioma: |
Inglês |
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 |
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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Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
11/03/2008 |
Data da última atualização: |
30/05/2012 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SOUZA, K.; POLTRONIERI, L. S.; VERZIGNASSI, J. R.; BENCHIMOL, R. L.; SILVA, J. C. da; MORAES, A.; COSTA, R. C. da. |
Afiliação: |
Karina Souza, UFRA; Luiz Sebastião Poltronieri, CPATU; Jaqueline R. Verzignassi, CPATU; RUTH LINDA BENCHIMOL, CPATU; Joseani Castro da Silva, UFRA; Alessandra Moraes, UFRA; Rosemary Corrêa da Costa, UFRA. |
Título: |
Algas causando necrose foliar em helicônia no Pará. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DO PET, 2., 2007, Belém, PA. Iniciação científica e a formação profissional: anais. Belém, PA: PROEN/UFRA, 2007. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Pará. |
Thesagro: |
Alga; Doença de Planta; Helicônia; Microrganismo; Necrose. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/60375/1/Algas.pdf
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Marc: |
LEADER 00818nam a2200277 a 4500 001 1409424 005 2012-05-30 008 2007 bl uuuu u00u1 u #d 100 1 $aSOUZA, K. 245 $aAlgas causando necrose foliar em helicônia no Pará. 260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DO PET, 2., 2007, Belém, PA. Iniciação científica e a formação profissional: anais. Belém, PA: PROEN/UFRA$c2007 300 $c1 CD-ROM. 650 $aAmazonia 650 $aAlga 650 $aDoença de Planta 650 $aHelicônia 650 $aMicrorganismo 650 $aNecrose 653 $aBrasil 653 $aPará 700 1 $aPOLTRONIERI, L. S. 700 1 $aVERZIGNASSI, J. R. 700 1 $aBENCHIMOL, R. L. 700 1 $aSILVA, J. C. da 700 1 $aMORAES, A. 700 1 $aCOSTA, R. C. da
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