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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
16/09/2021 |
Data da última atualização: |
16/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
STAUDHAMMER, C. L.; WADT, L. H. de O.; KAINER, K. A.; CUNHA, T. A. da. |
Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO. |
Título: |
Comparative models disentangle drivers of fruit production variability of an economically and ecologically important long-lived Amazonian tree. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Scientific Reports, v. 11, n. 2563, 2021. |
Idioma: |
Inglês |
Conteúdo: |
Trees in the upper canopy contribute disproportionately to forest ecosystem productivity. The large, canopy-emergent Bertholletia excelsa also supports a multimillion-dollar commodity crop (Brazil nut), harvested almost exclusively from Amazonian forests. B. excelsa fruit production, however is extremely variable within populations and years, destabilizing local harvester livelihoods and the extractive economy. To understand this variability, data were collected in Acre, Brazil over 10 years at two sites with similar climate and forest types, but different fruit production levels, despite their proximity (~ 30 km). One site consistently produced more fruit, showed less individual- and population-level variability, and had significantly higher soil P and K levels. The strongest predictor of fruit production was crown area. Elevation and sapwood area also significantly impacted fruit production, but effects differed by site. While number of wet days and dry season vapor pressure prior to flowering were significant production predictors, no climatic variables completely captured annual observed variation. Trees on the site with higher available P and K produced nearly three times more fruits, and appeared more resilient to prolonged drought and drier atmospheric conditions. Management activities, such as targeted fertilization, may shield income-dependent harvesters from expected climate changes and production swings, ultimately contributing to conservation of old growth forests where this species thrives. MenosTrees in the upper canopy contribute disproportionately to forest ecosystem productivity. The large, canopy-emergent Bertholletia excelsa also supports a multimillion-dollar commodity crop (Brazil nut), harvested almost exclusively from Amazonian forests. B. excelsa fruit production, however is extremely variable within populations and years, destabilizing local harvester livelihoods and the extractive economy. To understand this variability, data were collected in Acre, Brazil over 10 years at two sites with similar climate and forest types, but different fruit production levels, despite their proximity (~ 30 km). One site consistently produced more fruit, showed less individual- and population-level variability, and had significantly higher soil P and K levels. The strongest predictor of fruit production was crown area. Elevation and sapwood area also significantly impacted fruit production, but effects differed by site. While number of wet days and dry season vapor pressure prior to flowering were significant production predictors, no climatic variables completely captured annual observed variation. Trees on the site with higher available P and K produced nearly three times more fruits, and appeared more resilient to prolonged drought and drier atmospheric conditions. Management activities, such as targeted fertilization, may shield income-dependent harvesters from expected climate changes and production swings, ultimately contributing to conservation of old growth forest... Mostrar Tudo |
Palavras-Chave: |
Amazonian forests; Amazonian tree. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226080/1/Staudhammer-et-al-2021-DriversFruitProd-BNut.pdf
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Marc: |
LEADER 02125naa a2200181 a 4500 001 2134466 005 2021-09-16 008 2021 bl uuuu u00u1 u #d 100 1 $aSTAUDHAMMER, C. L. 245 $aComparative models disentangle drivers of fruit production variability of an economically and ecologically important long-lived Amazonian tree.$h[electronic resource] 260 $c2021 520 $aTrees in the upper canopy contribute disproportionately to forest ecosystem productivity. The large, canopy-emergent Bertholletia excelsa also supports a multimillion-dollar commodity crop (Brazil nut), harvested almost exclusively from Amazonian forests. B. excelsa fruit production, however is extremely variable within populations and years, destabilizing local harvester livelihoods and the extractive economy. To understand this variability, data were collected in Acre, Brazil over 10 years at two sites with similar climate and forest types, but different fruit production levels, despite their proximity (~ 30 km). One site consistently produced more fruit, showed less individual- and population-level variability, and had significantly higher soil P and K levels. The strongest predictor of fruit production was crown area. Elevation and sapwood area also significantly impacted fruit production, but effects differed by site. While number of wet days and dry season vapor pressure prior to flowering were significant production predictors, no climatic variables completely captured annual observed variation. Trees on the site with higher available P and K produced nearly three times more fruits, and appeared more resilient to prolonged drought and drier atmospheric conditions. Management activities, such as targeted fertilization, may shield income-dependent harvesters from expected climate changes and production swings, ultimately contributing to conservation of old growth forests where this species thrives. 653 $aAmazonian forests 653 $aAmazonian tree 700 1 $aWADT, L. H. de O. 700 1 $aKAINER, K. A. 700 1 $aCUNHA, T. A. da 773 $tScientific Reports$gv. 11, n. 2563, 2021.
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Embrapa Rondônia (CPAF-RO) |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
26/03/2010 |
Data da última atualização: |
25/06/2018 |
Autoria: |
CURI, R. A.; FORTES, M. R. S.; CHARDULO, L. A. L.; SILVEIRA, A. C.; DE BENI ARRIGONE, M.; MARTINS, C. L.; ASSUMPÇÃO, M. E. O. D'A.; OLIVEIRA, H. N. de. |
Afiliação: |
Rogério Abdallah Curi, Universidade Estadual Paulista - Unesp/Faculdade de Medicina Veterinária e Zootecnia/Departamento de Melhoramento e Nutrição Animal; Marina Rufino Salinas Fortes, Universidade de São Paulo/Faculdade de Medicina Veterinária e Zootecnia Departamento de Reprodução Animal; Luis Artur Loyola Chardulo, Unesp/Instituto de Biociências/Departamento de Química e Bioquímica; Antonio Carlos Silveira, Universidade Estadual Paulista - Unesp/Faculdade de Medicina Veterinária e Zootecnia/Departamento de Melhoramento e Nutrição Animal; Mário De Beni Arrigoni, Universidade Estadual Paulista - Unesp/Faculdade de Medicina Veterinária e Zootecnia/Departamento de Melhoramento e Nutrição Animal; Cyntia Ludovico Martins, Universidade Estadual Paulista - Unesp/Faculdade de Medicina Veterinária e Zootecnia/Departamento de Melhoramento e Nutrição Animal; Mayra Elena Ortiz D'Avila Assumpção, Universidade de São Paulo/Faculdade de Medicina Veterinária e Zootecnia Departamento de Reprodução Animal; Henrique Nunes de Oliveira, Universidade Estadual Paulista - Unesp/Faculdade de Medicina Veterinária e Zootecnia/Departamento de Melhoramento e Nutrição Animal. |
Título: |
Genetic polymorphisms related to meat traits in purebred and crossbred Nelore cattle. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 12, p. 1660-1666, dez. 2009 |
Idioma: |
Inglês |
Notas: |
Título em português: Polimorfi smos genéticos relacionados às características da carne em bovinos Nelore puros e cruzados. |
Conteúdo: |
The objective of this work was to estimate the allelic and genotypic frequencies of CAST/XmnI, a calpastatin gene polymorphism, and CAPN530, a calpain 1 large subunit gene polymorphism, in different beef genetic groups (Nelore and Nelore x Bos taurus), and to investigate associations between these polymorphisms and carcass and meat traits. Three hundred animals ? comprising 114 Nelore, 67 Angus x Nelore, 44 Rubia Gallega x Nelore, 41 Canchim, 19 Brangus three-way cross and 15 Braunvieh three-way cross ? were genotyped by PCR-RFLP and phenotyped for rib-eye area (REA), back-fat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The occurrence of the two alleles of the CAST/XmnI and CAPN530 single nucleotide polymorphisms (SNPs) in a B. indicus breed, which permitted association studies in purebred and crossbred Nelore cattle, was first shown in the present work. No relationship was found between the CAST or CAPN1 SNPs and growth-related traits (REA) or fat deposition (BT and IF), since calpastatin and ?-calpain are not physiologically involved with these traits. Moreover, the association results between genotypes and aged meat tenderness (assessed by SF and MFI) showed that these markers are useless in assisted selection for purebred Nelore and their crosses with B. taurus. |
Palavras-Chave: |
Calpain gene; Calpastatin gene; Single nucleotide polymorphisms. |
Thesagro: |
Bos Indicus. |
Thesaurus NAL: |
Meat tenderness. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38219/1/44n12a15.pdf
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Marc: |
LEADER 02297naa a2200277 a 4500 001 1662457 005 2018-06-25 008 2009 bl uuuu u00u1 u #d 100 1 $aCURI, R. A. 245 $aGenetic polymorphisms related to meat traits in purebred and crossbred Nelore cattle. 260 $c2009 500 $aTítulo em português: Polimorfi smos genéticos relacionados às características da carne em bovinos Nelore puros e cruzados. 520 $aThe objective of this work was to estimate the allelic and genotypic frequencies of CAST/XmnI, a calpastatin gene polymorphism, and CAPN530, a calpain 1 large subunit gene polymorphism, in different beef genetic groups (Nelore and Nelore x Bos taurus), and to investigate associations between these polymorphisms and carcass and meat traits. Three hundred animals ? comprising 114 Nelore, 67 Angus x Nelore, 44 Rubia Gallega x Nelore, 41 Canchim, 19 Brangus three-way cross and 15 Braunvieh three-way cross ? were genotyped by PCR-RFLP and phenotyped for rib-eye area (REA), back-fat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The occurrence of the two alleles of the CAST/XmnI and CAPN530 single nucleotide polymorphisms (SNPs) in a B. indicus breed, which permitted association studies in purebred and crossbred Nelore cattle, was first shown in the present work. No relationship was found between the CAST or CAPN1 SNPs and growth-related traits (REA) or fat deposition (BT and IF), since calpastatin and ?-calpain are not physiologically involved with these traits. Moreover, the association results between genotypes and aged meat tenderness (assessed by SF and MFI) showed that these markers are useless in assisted selection for purebred Nelore and their crosses with B. taurus. 650 $aMeat tenderness 650 $aBos Indicus 653 $aCalpain gene 653 $aCalpastatin gene 653 $aSingle nucleotide polymorphisms 700 1 $aFORTES, M. R. S. 700 1 $aCHARDULO, L. A. L. 700 1 $aSILVEIRA, A. C. 700 1 $aDE BENI ARRIGONE, M. 700 1 $aMARTINS, C. L. 700 1 $aASSUMPÇÃO, M. E. O. D'A. 700 1 $aOLIVEIRA, H. N. de 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 44, n. 12, p. 1660-1666, dez. 2009
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