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| Registros recuperados : 431 | |
| 101. |  | OLIVEIRA, D. A. de; BASTOS, A. J. R.; LOBATO, A. T.; ALVES, R. M. Análise do crescimento e desenvolvimento de acessos de taperebazeiro (Spondias mombim L.), do banco ativo de germoplasma da Embrapa Amazônia Oriental, em Belém-PA. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 20.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 4., 2016, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2016. p. 205-209.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 102. | | BARBOSA, J. N. do N.; ALVES, R. M.; ALMEIDA, O. F.; FERNANDES, J. R. Q. Análise fenológica da espécie cumaruzeiro (Dipteryx odorata) no município de Colares, estado do Pará. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 17.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 1., 2013, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2013. 1 CD-ROM. PIBIC 2013.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 104. | | RAMOS, G. K. de S.; RODRIGUES, S. de M.; LEMOS, O. F. de; ALVES, R. M. Obtenção de calos em estaminoides de cupuaçuzeiro cultivados in vitro. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 17.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 1., 2013, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2013. 1 CD-ROM. PIBIC 2013.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 105. | | CARDOSO, J. de N. O.; LEMOS, O. F. de; ALVES, R. M. Obtenção de plantas doadoras de explantes para o desenvolvimento do processo de micropropagação de cupuaçuzeiro. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL (AVALIAÇÃO-2004), 8., 2005, Belém, PA. Ciência e tecnologia com inclusão social: anais. Belém, PA: UFRA: Embrapa Amazônia Oriental, 2005. 1 CD-ROM.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 112. | | ALVES, R. M.; AZEVEDO, R de; CUNHA, R. L.; SANTOS, V. S. dos. Estimação de parâmetros genéticos em genótipos de girassol no nordeste do estado do Pará. In: REUNIÃO NACIONAL DE PESQUISA DO GIRASSOL, 18., SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 6., 2009. Pelotas. Anais... Pelotas: Embrapa Clima Temperado, 2009. p. 166-172. Editado por Ana Claudia Barneche de Oliveira, Ana Paula Afonso Scheneid da Rosa e Márcia Vizzotto.| Biblioteca(s): Embrapa Clima Temperado. |
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| 113. | | ALVES, R. M.; AZEVEDO, R. de; CUNHA, R. L.; SANTOS, V. S. dos. Estimação de parâmetros genéticos em genótipos de girassol no nordeste do estado do Pará. In: REUNIÃO NACIONAL DE PESQUISA DO GIRASSOL, 18.; SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 6., 2009, Pelotas. Anais... Pelotas: Embrapa Clima Temperado, 2009. p. 166-172. Editado por Ana Claudia Barneche de Oliveira, Ana Paula Afonso Scheneid da Rosa e Márcia Vizzotto.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 114. | | BASTOS, A. J. R.; TEIXEIRA, A. L.; FERNANDES, J. R. Q.; ALVES, R. M. Estimativas de parâmetros genéticos em acessos de cupuaçuzeiro no Nordeste paraense (clones elites II). In: SIMPÓSIO DE ESTUDOS E PESQUISAS EM CIÊNCIAS AMBIENTAIS NA AMAZÔNIA, 5., 2016, Belém, PA. Anais. Belém, PA: UEPA, 2016. v. 1, p. 204-211.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 117. | | ALVES, R. M. L.; GROSSMANN, M. V. E.; SILVA, R. S. S. F. Efeito de variaveis da extrusao nas propriedades funcionais de amido Sao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996. 1p. In: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, E CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa e Resumos...| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/03/2008 |
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Data da última atualização: |
23/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
ALVES, R. M.; SEBBENN, A. M.; ARTERO, A. S.; CLEMENT, C.; FIGUEIRA, A. |
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Afiliação: |
RAFAEL MOYSES ALVES, CPATU; Alexandre M. Sebbenn, Instituto Florestal de São Paulo; Angela S. Artero, USP; Charles Clement, Instituto de Pesquisa da Amazônia; Antonio Figueira, USP. |
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Título: |
High levels of genetic divergence and inbreeding in populations of cupuassu (Theobroma grandiflorum). |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Tree Genetics & Genomes, v. 3, n. 4, p. 289-298, out. 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
Theobroma grandiflorum (cupuassu) is an important fruit tree native to the Brazilian Amazon. Establishing the genetic diversity and structure of populations is critical to define long-term strategies for cupuassu conservation presently threatened by rapid deforestation. Three natural populations collected at the putative center of diversity, three groups of accessions established at a germplasm collection, and one derived from commercial plantings were analyzed. The genetic diversity was assessed using 21 polymorphic microsatellite loci originally developed for Theobroma cacao, disclosing a total of 113 alleles. The estimated genetic diversity parameters averaged over cupuassu populations (A?=?3.53 alleles per locus; H e?=?0.426; H o?=?0.346) were lower than the values reported for other Neotropical tree species. The three natural populations presented a positive and significant fixation index (f), ranging from 0.133 to 0.234. Cupuassu apparently adhered to a general pattern of genetic diversity structure of some Neotropical tree species occurring at low densities, with a low intrapopulation genetic diversity and important levels of endogamy, possibly due to biparental inbreeding derived from the presence of spatial genetic structure in the populations. A high level of genetic divergence was detected among the natural populations (? p?=?0.301), a strong differentiation caused by limited gene flow, and suggesting that human interference in spreading and/or stimulating plantings might have had a smaller effect than expected. The approximate location of the T. grandiflorum center of diversity could not be confirmed by analyzing natural populations from the putative region. MenosTheobroma grandiflorum (cupuassu) is an important fruit tree native to the Brazilian Amazon. Establishing the genetic diversity and structure of populations is critical to define long-term strategies for cupuassu conservation presently threatened by rapid deforestation. Three natural populations collected at the putative center of diversity, three groups of accessions established at a germplasm collection, and one derived from commercial plantings were analyzed. The genetic diversity was assessed using 21 polymorphic microsatellite loci originally developed for Theobroma cacao, disclosing a total of 113 alleles. The estimated genetic diversity parameters averaged over cupuassu populations (A?=?3.53 alleles per locus; H e?=?0.426; H o?=?0.346) were lower than the values reported for other Neotropical tree species. The three natural populations presented a positive and significant fixation index (f), ranging from 0.133 to 0.234. Cupuassu apparently adhered to a general pattern of genetic diversity structure of some Neotropical tree species occurring at low densities, with a low intrapopulation genetic diversity and important levels of endogamy, possibly due to biparental inbreeding derived from the presence of spatial genetic structure in the populations. A high level of genetic divergence was detected among the natural populations (? p?=?0.301), a strong differentiation caused by limited gene flow, and suggesting that human interference in spreading and/or stimulating plantin... Mostrar Tudo |
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Palavras-Chave: |
Cupuassu. |
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Thesagro: |
Cupuaçu; Genética; Theobroma Grandiflorum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02337naa a2200217 a 4500
001 1409422
005 2022-11-23
008 2007 bl uuuu u00u1 u #d
100 1 $aALVES, R. M.
245 $aHigh levels of genetic divergence and inbreeding in populations of cupuassu (Theobroma grandiflorum).$h[electronic resource]
260 $c2007
520 $aTheobroma grandiflorum (cupuassu) is an important fruit tree native to the Brazilian Amazon. Establishing the genetic diversity and structure of populations is critical to define long-term strategies for cupuassu conservation presently threatened by rapid deforestation. Three natural populations collected at the putative center of diversity, three groups of accessions established at a germplasm collection, and one derived from commercial plantings were analyzed. The genetic diversity was assessed using 21 polymorphic microsatellite loci originally developed for Theobroma cacao, disclosing a total of 113 alleles. The estimated genetic diversity parameters averaged over cupuassu populations (A?=?3.53 alleles per locus; H e?=?0.426; H o?=?0.346) were lower than the values reported for other Neotropical tree species. The three natural populations presented a positive and significant fixation index (f), ranging from 0.133 to 0.234. Cupuassu apparently adhered to a general pattern of genetic diversity structure of some Neotropical tree species occurring at low densities, with a low intrapopulation genetic diversity and important levels of endogamy, possibly due to biparental inbreeding derived from the presence of spatial genetic structure in the populations. A high level of genetic divergence was detected among the natural populations (? p?=?0.301), a strong differentiation caused by limited gene flow, and suggesting that human interference in spreading and/or stimulating plantings might have had a smaller effect than expected. The approximate location of the T. grandiflorum center of diversity could not be confirmed by analyzing natural populations from the putative region.
650 $aCupuaçu
650 $aGenética
650 $aTheobroma Grandiflorum
653 $aCupuassu
700 1 $aSEBBENN, A. M.
700 1 $aARTERO, A. S.
700 1 $aCLEMENT, C.
700 1 $aFIGUEIRA, A.
773 $tTree Genetics & Genomes$gv. 3, n. 4, p. 289-298, out. 2007.
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