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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Caprinos e Ovinos. |
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Data corrente: |
17/08/2021 |
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Data da última atualização: |
17/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAIM, T. P.; PAIVA, S. R.; TOLEDO, N. M. de; YAMAGISHI, M. E. B.; CARNEIRO, P. L. S.; FACO, O.; ARAUJO, A. M. de; AZEVEDO, H. C.; CAETANO, A. R.; BRAGA, R. M.; McMANUS, C. |
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Afiliação: |
UnB; SAMUEL REZENDE PAIVA, Cenargen; UnB; MICHEL EDUARDO BELEZA YAMAGISHI, CNPTIA; Universidade Estadual do Sudoeste da Bahia (Uesb) - Jequié, BA, Brazil; OLIVARDO FACO, CNPC; ADRIANA MELLO DE ARAUJO, CPAMN; HYMERSON COSTA AZEVEDO, CPATC; ALEXANDRE RODRIGUES CAETANO, Cenargen; RAMAYANA MENEZES BRAGA, CPAF-RR; UnB. |
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Título: |
Origin and population structure of Brazilian hair sheep breeds. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Animal Genetics, v. 52, n. 4, p. 492-504, Aug. 2021. |
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DOI: |
10.1111/age.1309 |
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Idioma: |
Inglês |
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Notas: |
Na publicação: M. B. Yamaghishi. |
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Conteúdo: |
Summary. Brazilian hair sheep constitute a genetic diversity hotspot. These animals are found in the harsh environments of the Brazilian Northwest (semi-arid) region. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (five hair and two coarse wool types) and 87 worldwide breeds were used to test for population structure, admixture and genetic
diversity. Moreover, phylogenetic trees evaluating migration events between genetic groups were built. Brazilian Somali, a fat-tailed breed, had a close relationship with East African
breeds and clustered distinctly from other Brazilian breeds. Brazilian Blackbelly and Barbados Blackbelly had a close relationship. The Morada Nova breed did not show close relationships with European or African breeds, revealing a single migration event from an Algerian hair breed. Brazilian Fat-tail and Morada Nova share a common ancestor, but the former showed introgressions from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. The Santa In^es breed received a substantial contribution from Brazilian Bergamasca and showed an admixed origin with recent introgressions from other breeds, mainly from Suffolk. Furthermore, Brazilian Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil and should be the focus for ex situ conservation programs. In conclusion, Brazilian hair sheep show an African origin and are characterized by diverse genetic composition, reinforcing the need for conservation of these genetic resources, and at the same time, this highly diverse group has variability that can be used in breeding programs. MenosSummary. Brazilian hair sheep constitute a genetic diversity hotspot. These animals are found in the harsh environments of the Brazilian Northwest (semi-arid) region. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (five hair and two coarse wool types) and 87 worldwide breeds were used to test for population structure, admixture and genetic
diversity. Moreover, phylogenetic trees evaluating migration events between genetic groups were built. Brazilian Somali, a fat-tailed breed, had a close relationship with East African
breeds and clustered distinctly from other Brazilian breeds. Brazilian Blackbelly and Barbados Blackbelly had a close relationship. The Morada Nova breed did not show close relationships with European or African breeds, revealing a single migration event from an Algerian hair breed. Brazilian Fat-tail and Morada Nova share a common ancestor, but the former showed introgressions from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. The Santa In^es breed received a substantial contribution from Brazilian Bergamasca and showed an admixed origin with recent introgressions from other breeds, mainly from Suffolk. Furthermore, Brazilian Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil and should be the focus for ex situ conservation programs. In conclusion, Brazilian hair sheep show an African origin and are characterized by diverse genetic composition, reinforcing the need for conservation ... Mostrar Tudo |
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Palavras-Chave: |
Conservation genetics; Genética de conservação; Genômica; Marcadores moleculares; Migração; Molecular markers; Raças de ovelhas; Recursos genéticos animais. |
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Thesagro: |
Ovelha; Ovis Aries. |
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Thesaurus Nal: |
Animal genetic resources; Gene flow; Genetic markers; Genomics; Population genetics; Sheep breeds. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02912naa a2200457 a 4500
001 2133638
005 2021-08-17
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1111/age.1309$2DOI
100 1 $aPAIM, T. P.
245 $aOrigin and population structure of Brazilian hair sheep breeds.$h[electronic resource]
260 $c2021
500 $aNa publicação: M. B. Yamaghishi.
520 $aSummary. Brazilian hair sheep constitute a genetic diversity hotspot. These animals are found in the harsh environments of the Brazilian Northwest (semi-arid) region. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (five hair and two coarse wool types) and 87 worldwide breeds were used to test for population structure, admixture and genetic diversity. Moreover, phylogenetic trees evaluating migration events between genetic groups were built. Brazilian Somali, a fat-tailed breed, had a close relationship with East African breeds and clustered distinctly from other Brazilian breeds. Brazilian Blackbelly and Barbados Blackbelly had a close relationship. The Morada Nova breed did not show close relationships with European or African breeds, revealing a single migration event from an Algerian hair breed. Brazilian Fat-tail and Morada Nova share a common ancestor, but the former showed introgressions from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. The Santa In^es breed received a substantial contribution from Brazilian Bergamasca and showed an admixed origin with recent introgressions from other breeds, mainly from Suffolk. Furthermore, Brazilian Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil and should be the focus for ex situ conservation programs. In conclusion, Brazilian hair sheep show an African origin and are characterized by diverse genetic composition, reinforcing the need for conservation of these genetic resources, and at the same time, this highly diverse group has variability that can be used in breeding programs.
650 $aAnimal genetic resources
650 $aGene flow
650 $aGenetic markers
650 $aGenomics
650 $aPopulation genetics
650 $aSheep breeds
650 $aOvelha
650 $aOvis Aries
653 $aConservation genetics
653 $aGenética de conservação
653 $aGenômica
653 $aMarcadores moleculares
653 $aMigração
653 $aMolecular markers
653 $aRaças de ovelhas
653 $aRecursos genéticos animais
700 1 $aPAIVA, S. R.
700 1 $aTOLEDO, N. M. de
700 1 $aYAMAGISHI, M. E. B.
700 1 $aCARNEIRO, P. L. S.
700 1 $aFACO, O.
700 1 $aARAUJO, A. M. de
700 1 $aAZEVEDO, H. C.
700 1 $aCAETANO, A. R.
700 1 $aBRAGA, R. M.
700 1 $aMcMANUS, C.
773 $tAnimal Genetics$gv. 52, n. 4, p. 492-504, Aug. 2021.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
05/03/2013 |
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Data da última atualização: |
09/08/2022 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
BARBIERI JUNIOR, E.; ROSSIELO, R. O. P.; SILVA, R. V. M. M.; RIBEIRO, R. C.; MORENZ, M. J. F. |
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Afiliação: |
ELIO BARBIERI JUNIOR, UFRRJ; ROBERTO OSCAR PEREYRA ROSSIELO, UFRRJ; ROSANI VALÉRIA MARCELINA MATOSO SILVA, UFRRJ; ROBERTA CRISTIANE RIBEIRO, IFMT; MIRTON JOSE FROTA MORENZ, CNPGL. |
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Título: |
Um novo clorofilômetro para estimar os teores de clorofila em folhas de capim Tifton 85. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Ciência Rural, v. 42, n. 12, p. 2242-2245, 2012. |
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DOI: |
https://doi.org/10.1590/S0103-84782012005000109 |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - O propósito deste trabalho foi verificar o desempenho de um novo clorofilometro portátil, em parcelas experimentais vegetadas com o capim-Tifton 85 (Cynodon spp.). Para tal, foi utilizado um experimento de curta duração, em que três doses de N (0,75 e 150kg de N ha-1) foram combinadas com quatro datas de amostragem (8, 16, 24 e 28 dias após um corte de uniformização). As análises foram feitas em lâminas da folha mais nova totalmente expandida. Os teores das clorofilas a, b e a+b foram quantificados espectrofotometricamente após a extração com acetona 80%, enquanto que o clorofilômetro forneceu os correspondentes valores de Índice de Clorofila Falker (ICF). As leituras do aparelho foram sensíveis tanto às doses de N quanto às datas de amostragem. Foram obtidas correlações positivas entre ambos os métodos de quantificação (clorofila a: r=0,646; b: r=0,797; e total: r=0,721), que evidenciaram a utilidade desse novo clorofilometro na determinação indireta dos teores de clorofila foliar no capim-Tifton 85. ABSTRACT - The purpose of this research was to evaluate the performance of a new portable chlorophyll meter in the indirect determination of chlorophyll contents in Tifton 85 bermudagrass leaves. In a field trial of short duration, three N doses (0, 75 and 150kg ha-1) were combined with four sampling dates (8, 16, 24 e 28 days after a cut for sward uniformity) in completely randomized blocks, with treatments arranged in a split-plot design. Analyses were performed in the youngest fully expanded leaf blade. Contents of chlorophylls a, b and total were quantified spectrophotometrically, after extraction with acetone 80%, while chlorophyll meter readings, expressed as Falker Chlorophyll Index (FCI) units, provided the same information. Chlorophyll meter readings were sensitive to both N rates and sampling dates. It were obtained significant positive correlations between both methods (chlorophyll a: r=0.646, chlorophyll b: r=0.797 and for total chlorophyll: r=0.721). It was concluded that this new chlorophyll meter constitutes an appropriate tool for the indirect determination of foliar chlorophyll contents in Tifton 85 pastures. MenosRESUMO - O propósito deste trabalho foi verificar o desempenho de um novo clorofilometro portátil, em parcelas experimentais vegetadas com o capim-Tifton 85 (Cynodon spp.). Para tal, foi utilizado um experimento de curta duração, em que três doses de N (0,75 e 150kg de N ha-1) foram combinadas com quatro datas de amostragem (8, 16, 24 e 28 dias após um corte de uniformização). As análises foram feitas em lâminas da folha mais nova totalmente expandida. Os teores das clorofilas a, b e a+b foram quantificados espectrofotometricamente após a extração com acetona 80%, enquanto que o clorofilômetro forneceu os correspondentes valores de Índice de Clorofila Falker (ICF). As leituras do aparelho foram sensíveis tanto às doses de N quanto às datas de amostragem. Foram obtidas correlações positivas entre ambos os métodos de quantificação (clorofila a: r=0,646; b: r=0,797; e total: r=0,721), que evidenciaram a utilidade desse novo clorofilometro na determinação indireta dos teores de clorofila foliar no capim-Tifton 85. ABSTRACT - The purpose of this research was to evaluate the performance of a new portable chlorophyll meter in the indirect determination of chlorophyll contents in Tifton 85 bermudagrass leaves. In a field trial of short duration, three N doses (0, 75 and 150kg ha-1) were combined with four sampling dates (8, 16, 24 e 28 days after a cut for sward uniformity) in completely randomized blocks, with treatments arranged in a split-plot design. Analyses were performed in t... Mostrar Tudo |
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Palavras-Chave: |
Adubação nitrogenada; Clorofila total; Cynodon spp. |
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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/doc/952180/1/Um-novo-clorofilometro-para-estimar-os-teores-de-clorofila-em-folhas-de-capim-Tifton-85.pdf
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Marc: |
LEADER 02887naa a2200217 a 4500
001 1952180
005 2022-08-09
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0103-84782012005000109$2DOI
100 1 $aBARBIERI JUNIOR, E.
245 $aUm novo clorofilômetro para estimar os teores de clorofila em folhas de capim Tifton 85.$h[electronic resource]
260 $c2012
520 $aRESUMO - O propósito deste trabalho foi verificar o desempenho de um novo clorofilometro portátil, em parcelas experimentais vegetadas com o capim-Tifton 85 (Cynodon spp.). Para tal, foi utilizado um experimento de curta duração, em que três doses de N (0,75 e 150kg de N ha-1) foram combinadas com quatro datas de amostragem (8, 16, 24 e 28 dias após um corte de uniformização). As análises foram feitas em lâminas da folha mais nova totalmente expandida. Os teores das clorofilas a, b e a+b foram quantificados espectrofotometricamente após a extração com acetona 80%, enquanto que o clorofilômetro forneceu os correspondentes valores de Índice de Clorofila Falker (ICF). As leituras do aparelho foram sensíveis tanto às doses de N quanto às datas de amostragem. Foram obtidas correlações positivas entre ambos os métodos de quantificação (clorofila a: r=0,646; b: r=0,797; e total: r=0,721), que evidenciaram a utilidade desse novo clorofilometro na determinação indireta dos teores de clorofila foliar no capim-Tifton 85. ABSTRACT - The purpose of this research was to evaluate the performance of a new portable chlorophyll meter in the indirect determination of chlorophyll contents in Tifton 85 bermudagrass leaves. In a field trial of short duration, three N doses (0, 75 and 150kg ha-1) were combined with four sampling dates (8, 16, 24 e 28 days after a cut for sward uniformity) in completely randomized blocks, with treatments arranged in a split-plot design. Analyses were performed in the youngest fully expanded leaf blade. Contents of chlorophylls a, b and total were quantified spectrophotometrically, after extraction with acetone 80%, while chlorophyll meter readings, expressed as Falker Chlorophyll Index (FCI) units, provided the same information. Chlorophyll meter readings were sensitive to both N rates and sampling dates. It were obtained significant positive correlations between both methods (chlorophyll a: r=0.646, chlorophyll b: r=0.797 and for total chlorophyll: r=0.721). It was concluded that this new chlorophyll meter constitutes an appropriate tool for the indirect determination of foliar chlorophyll contents in Tifton 85 pastures.
653 $aAdubação nitrogenada
653 $aClorofila total
653 $aCynodon spp
700 1 $aROSSIELO, R. O. P.
700 1 $aSILVA, R. V. M. M.
700 1 $aRIBEIRO, R. C.
700 1 $aMORENZ, M. J. F.
773 $tCiência Rural$gv. 42, n. 12, p. 2242-2245, 2012.
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Embrapa Gado de Leite (CNPGL) |
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