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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
16/03/2020 |
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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: |
OLIVEIRA, S. S. de; CAMPOS, T. de; SEBBENN, A. M.; OLIVEIRA, M. V. N. d'. |
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Afiliação: |
Sabrina Silva de Oliveira, Universidade Federal do Acre (Ufac); TATIANA DE CAMPOS, CPAF-AC; Alexandre Magno Sebbenn, Instituto Florestal de São Paulo; MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC. |
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Título: |
Using spatial genetic structure of a population of Swietenia macrophylla King to integrate genetic diversity into management strategies in Southwestern Amazon. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 464, n. 15, 118040, May 2020. |
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ISSN: |
0378-1127 |
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DOI: |
10.1016/j.foreco.2020.118040 |
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Idioma: |
Inglês |
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Conteúdo: |
The aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating populations. The number of trees (m) required for seed collection was estimated at 55 non-inbreed and not related trees to each other. The core collection consisted of 42 (50.6%) adults across the area. These individuals should be included in seed collection as they represent 100% of the total detected genetic diversity. The inclusion of S. macrophylla on the list of species available for exploitation is not indicated, because the species requires cross breeding for its maintenance and logging reduce the Ne and may negatively impact the pattern of genetic diversity. These will significantly increase the risk of genetic erosion and population extinction due to a lack of adaptive ability. Adults serve as pollen donors that ecologically and genetically contribute to the maintenance of gene flow and Ne. Because it is recognized as a threatened species worldwide, and due to the fact that in areas of natural occurrence the species presents low-density and shows difficulty establishing natural regeneration, we recommend that S. macrophylla be protected from selective logging. MenosThe aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating ... Mostrar Tudo |
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Palavras-Chave: |
Acre; Bujari (AC); Estructura poblacional; Estrutura genética espacial; Floresta Estadual do Antimary (AC); Mahogany; Repeticiones de microsatélite; Sena Madureira (AC); Southwestern Amazon; Sudoeste da Amazônia. |
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Thesagro: |
Características Agronômicas; Conservação; Genética Vegetal; Marcador Genético; Mogno; Parâmetro Genético; População de Planta; Swietenia Macrophylla. |
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Thesaurus Nal: |
Agronomic traits; Genetic markers; Loci; Microsatellite repeats; Population structure. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/211864/1/26982.pdf
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Marc: |
LEADER 04041naa a2200457 a 4500
001 2121251
005 2021-07-02
008 2020 bl uuuu u00u1 u #d
022 $a0378-1127
024 7 $a10.1016/j.foreco.2020.118040$2DOI
100 1 $aOLIVEIRA, S. S. de
245 $aUsing spatial genetic structure of a population of Swietenia macrophylla King to integrate genetic diversity into management strategies in Southwestern Amazon.$h[electronic resource]
260 $c2020
520 $aThe aims of this study were to investigate the intrapopulation spatial genetic structure (SGS) of a preserved Swietenia macrophylla population in a managed forest in Southwestern Amazon, in Acre state, Brazil, and assess the genetic parameters that underlie the conceptual framework that guides conservation and management strategies. The study was conducted in Annual Production Unit (APU) 3, where 83 adult trees (DBH?40 cm) were mapped (1650 ha). The diameter at breast height (DBH) was measured and the vascular exchange was sampled. Leaf tissues were collected from 187 juvenile individuals within a radius of 20m of adults. The population presented high heterozygosity (Ho) for adult (0.767) and juvenile (0.763) individuals, but significantly high allelic richness (R) and significantly lower fixation index (F) in adults (R =10.3, F =0.048) than juveniles (R =9.3, F= 0.119). The F value significantly higher for juveniles, suggesting selection against inbred individuals between juvenile and adult life stages. SGS was detected for adults up to 300 m. Mating was mainly through outcrossing (0.97-1.0), but some crossing occurred among related trees (0.02-0.16) and were correlated (rpm =0.06-0.22), indicating a mean effective number of pollen donors ranging from 4.5 to 18.2. Pollen dispersal distances reached 3905m (mean of 1472 m), and mean effective pollination neighbor area of 792 ha. The effective population size (Ne) within family (2.73) was lower than expected for random mating populations. The number of trees (m) required for seed collection was estimated at 55 non-inbreed and not related trees to each other. The core collection consisted of 42 (50.6%) adults across the area. These individuals should be included in seed collection as they represent 100% of the total detected genetic diversity. The inclusion of S. macrophylla on the list of species available for exploitation is not indicated, because the species requires cross breeding for its maintenance and logging reduce the Ne and may negatively impact the pattern of genetic diversity. These will significantly increase the risk of genetic erosion and population extinction due to a lack of adaptive ability. Adults serve as pollen donors that ecologically and genetically contribute to the maintenance of gene flow and Ne. Because it is recognized as a threatened species worldwide, and due to the fact that in areas of natural occurrence the species presents low-density and shows difficulty establishing natural regeneration, we recommend that S. macrophylla be protected from selective logging.
650 $aAgronomic traits
650 $aGenetic markers
650 $aLoci
650 $aMicrosatellite repeats
650 $aPopulation structure
650 $aCaracterísticas Agronômicas
650 $aConservação
650 $aGenética Vegetal
650 $aMarcador Genético
650 $aMogno
650 $aParâmetro Genético
650 $aPopulação de Planta
650 $aSwietenia Macrophylla
653 $aAcre
653 $aBujari (AC)
653 $aEstructura poblacional
653 $aEstrutura genética espacial
653 $aFloresta Estadual do Antimary (AC)
653 $aMahogany
653 $aRepeticiones de microsatélite
653 $aSena Madureira (AC)
653 $aSouthwestern Amazon
653 $aSudoeste da Amazônia
700 1 $aCAMPOS, T. de
700 1 $aSEBBENN, A. M.
700 1 $aOLIVEIRA, M. V. N. d'
773 $tForest Ecology and Management$gv. 464, n. 15, 118040, May 2020.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/08/2000 |
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Data da última atualização: |
16/08/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ARAUJO FILHO, J. A. de; GADELHA, J. A.; CRISPIM, S. M. A.; SILVA, N. L. da. |
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Afiliação: |
CNPC; Universidade Estadual Vale do Acaraú (UVA) - Sobral, CE; CPAP; CNPC. |
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Título: |
Pastoreio combinado em caatinga manipulada no sertão cearense. I. Desempenho dos bovinos. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 37., 2000, Viçosa, MG. Resumos dos trabalhos apresentados. Viçosa, MG: Sociedade Brasileira de Zootecnia, 2000. p. 110. |
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Idioma: |
Português |
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Notas: |
Resumo expandido apresentado em CD. |
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Conteúdo: |
O experimento foi conduzido na Fazenda Pau-preto, Taua, CE, com o objetivo de determinar os efeitos da manipulacao da vegetacao lenhosa da caatinga e do pastoreio multiplo sobre o ganho de peso de bovinos. Os tratamentos principais consistiram de caatinga nativa, caatinga rebaixada e caatinga raleada, e os subtratamentos, as combinacoes com ovinos, com caprinos, e com caprinos e ovinos, incluindo o pastoreio solteiro de bovinos. Os resultados permitem concluir que, na caatinga, os bovinos devem ser criados em pastoreio solteiro e que o raleamento constitui a melhor tecnica de manipulacao para esses ruminantes. |
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Palavras-Chave: |
Brasil; Ceará; Pastoreio multiplo; Raleamento; Releio; Thinning; Woody plant. |
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Thesagro: |
Bovino; Caatinga; Ganho de peso; Pastejo; Planta lenhosa; Vegetação. |
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Thesaurus NAL: |
Grazing; Vegetation. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162859/1/CNPC-2000-Pastoreio-I.pdf
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Marc: |
LEADER 01671nam a2200337 a 4500
001 1515327
005 2021-08-16
008 2000 bl uuuu u00u1 u #d
100 1 $aARAUJO FILHO, J. A. de
245 $aPastoreio combinado em caatinga manipulada no sertão cearense. I. Desempenho dos bovinos.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 37., 2000, Viçosa, MG. Resumos dos trabalhos apresentados. Viçosa, MG: Sociedade Brasileira de Zootecnia, 2000. p. 110.$c2000
500 $aResumo expandido apresentado em CD.
520 $aO experimento foi conduzido na Fazenda Pau-preto, Taua, CE, com o objetivo de determinar os efeitos da manipulacao da vegetacao lenhosa da caatinga e do pastoreio multiplo sobre o ganho de peso de bovinos. Os tratamentos principais consistiram de caatinga nativa, caatinga rebaixada e caatinga raleada, e os subtratamentos, as combinacoes com ovinos, com caprinos, e com caprinos e ovinos, incluindo o pastoreio solteiro de bovinos. Os resultados permitem concluir que, na caatinga, os bovinos devem ser criados em pastoreio solteiro e que o raleamento constitui a melhor tecnica de manipulacao para esses ruminantes.
650 $aGrazing
650 $aVegetation
650 $aBovino
650 $aCaatinga
650 $aGanho de peso
650 $aPastejo
650 $aPlanta lenhosa
650 $aVegetação
653 $aBrasil
653 $aCeará
653 $aPastoreio multiplo
653 $aRaleamento
653 $aReleio
653 $aThinning
653 $aWoody plant
700 1 $aGADELHA, J. A.
700 1 $aCRISPIM, S. M. A.
700 1 $aSILVA, N. L. da
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Embrapa Caprinos e Ovinos (CNPC) |
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