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Registro Completo |
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Biblioteca(s): |
Embrapa Acre; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
20/10/2016 |
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Data da última atualização: |
02/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
WADT, L. H. de O.; BALDONI, A. B.; SILVA, V. S.; CAMPOS, T. de; MARTINS, K.; AZEVEDO, V. C. R.; MATA, L. R. da; BOTIN, A. A.; HOOGERHEIDE, E. S. S.; TONINI, H.; SEBBENN, A. M. |
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Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia; AISY BOTEGA BALDONI TARDIN, CPAMT; Universidade Federal do Acre; TATIANA DE CAMPOS, CPAF-Acre; Universidade Federal de São Carlos; VANIA CRISTINA RENNO AZEVEDO, Cenargen; LORENA RAMOS DA MATA, Cenargen; Universidade Federal de Mato Grosso; EULALIA SOLER SOBREIRA HOOGERHEIDE, CPAMT; HELIO TONINI, CPAMT; Instituto Florestal de São Paulo. |
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Título: |
Mating system variation among populations, individuals and within and among fruits in Bertholletia excelsa. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Silvae Genetica, Deutschland, v. 64, p. 5-6, 2015. |
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ISSN: |
0037-5349 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
The aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations, probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs preferentially should be carried out in natural populations due low proportion highest variance effective size within progeny. MenosThe aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations, probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs ... Mostrar Tudo |
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Palavras-Chave: |
Ação antrópica; Acre; Actividades antropogénicas; Amazonia Occidental; Amazônia Ocidental; Castanha do brasil; Castanheira; Embrapa Acre; Embrapa Recursos Genéticos e Biotecnologia; Fitomejoramiento; Madera tropical; Marcador microssatélite; Marcadores genéticos; Mato Grosso; Nuez del Brasil; Polinización; Repeticiones de microsatélite; Rio Branco (AC); Western Amazon. |
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Thesagro: |
Acasalamento; Bertholletia Excelsa; Campo Experimental; Castanha do pará; Essência florestal; Flora; Marcador genético; Melhoramento genético vegetal; Polinização; População de planta; Reprodução; Reprodução vegetal. |
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Thesaurus Nal: |
Anthropogenic activities; Brazil nuts; Genetic markers; Microsatellite repeats; Plant breeding; Pollination; Tropical wood. |
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Categoria do assunto: |
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G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/149054/1/26156.pdf
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Marc: |
LEADER 03672naa a2200709 a 4500
001 2055132
005 2021-07-02
008 2015 bl uuuu u00u1 u #d
022 $a0037-5349
100 1 $aWADT, L. H. de O.
245 $aMating system variation among populations, individuals and within and among fruits in Bertholletia excelsa.$h[electronic resource]
260 $c2015
520 $aThe aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations, probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs preferentially should be carried out in natural populations due low proportion highest variance effective size within progeny.
650 $aAnthropogenic activities
650 $aBrazil nuts
650 $aGenetic markers
650 $aMicrosatellite repeats
650 $aPlant breeding
650 $aPollination
650 $aTropical wood
650 $aAcasalamento
650 $aBertholletia Excelsa
650 $aCampo Experimental
650 $aCastanha do pará
650 $aEssência florestal
650 $aFlora
650 $aMarcador genético
650 $aMelhoramento genético vegetal
650 $aPolinização
650 $aPopulação de planta
650 $aReprodução
650 $aReprodução vegetal
653 $aAção antrópica
653 $aAcre
653 $aActividades antropogénicas
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aCastanha do brasil
653 $aCastanheira
653 $aEmbrapa Acre
653 $aEmbrapa Recursos Genéticos e Biotecnologia
653 $aFitomejoramiento
653 $aMadera tropical
653 $aMarcador microssatélite
653 $aMarcadores genéticos
653 $aMato Grosso
653 $aNuez del Brasil
653 $aPolinización
653 $aRepeticiones de microsatélite
653 $aRio Branco (AC)
653 $aWestern Amazon
700 1 $aBALDONI, A. B.
700 1 $aSILVA, V. S.
700 1 $aCAMPOS, T. de
700 1 $aMARTINS, K.
700 1 $aAZEVEDO, V. C. R.
700 1 $aMATA, L. R. da
700 1 $aBOTIN, A. A.
700 1 $aHOOGERHEIDE, E. S. S.
700 1 $aTONINI, H.
700 1 $aSEBBENN, A. M.
773 $tSilvae Genetica, Deutschland$gv. 64, p. 5-6, 2015.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
16/04/2008 |
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Data da última atualização: |
16/04/2008 |
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Autoria: |
JANTALIA, C. P.; ARAÚJO, E. S.; ALVES, B. J. R.; URQUIAGA, S.; COSTA, J. R.; BODDEY, R. M. |
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Título: |
Avaliação de fatores envolvidos nas emissões de óxido nitroso em sistemas de produção orgânica. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Seropédica: Embrapa Agrobiologia, 2006. |
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Páginas: |
4 p. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na XXVII Reunião Brasileira de Fertilidade do Solo e Nutrição de Plantas, XI Reunião Brasileira sobre Micorrizas, IX Simpósio Brasileiro de Microbiologia do Solo; VI Reunião Brasileira de Biologia do Solo, Bonito/MS, 17 a 22 de setembro de 2006. |
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Palavras-Chave: |
Insumo orgânico; Manejo orgânico. |
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Thesagro: |
Produção Orgânica. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00893nam a2200217 a 4500
001 1629586
005 2008-04-16
008 2006 bl uuuu u0uu1 u #d
100 1 $aJANTALIA, C. P.
245 $aAvaliação de fatores envolvidos nas emissões de óxido nitroso em sistemas de produção orgânica.
260 $aSeropédica: Embrapa Agrobiologia$c2006
300 $a4 p.
500 $aTrabalho apresentado na XXVII Reunião Brasileira de Fertilidade do Solo e Nutrição de Plantas, XI Reunião Brasileira sobre Micorrizas, IX Simpósio Brasileiro de Microbiologia do Solo; VI Reunião Brasileira de Biologia do Solo, Bonito/MS, 17 a 22 de setembro de 2006.
650 $aProdução Orgânica
653 $aInsumo orgânico
653 $aManejo orgânico
700 1 $aARAÚJO, E. S.
700 1 $aALVES, B. J. R.
700 1 $aURQUIAGA, S.
700 1 $aCOSTA, J. R.
700 1 $aBODDEY, R. M.
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Embrapa Agrobiologia (CNPAB) |
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