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Registro Completo |
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
15/09/2021 |
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Data da última atualização: |
15/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
McMANUS, C.; PAIVA, S. R.; CAETANO, A. R.; HERMUCHE, P.; GUIMARÃES, R. F.; CARVALHO JUNIOR, O. A.; BRAGA, R. M.; CARNEIRO, P. L. S.; MORAES, J. C. F.; SOUZA, C. J. H. de; FACO, O.; SANTOS, S. A.; AZEVEDO, H. C.; ARAUJO, A. M. de; FAÇANHA, D. A. E.; IANELLA, P. |
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Afiliação: |
CONCEPTA MCMANUS, Universidade de Brasília (UnB) - Brasília, DF, Brazil; SAMUEL REZENDE PAIVA, Cenargen; ALEXANDRE RODRIGUES CAETANO, Cenargen; POTIRA HERMUCHE, Universidade de Brasília (UnB) - Brasília, DF, Brazil; RENATO FONTES GUIMARÃES, Universidade de Brasília (UnB) - Brasília, DF, Brazil; OSMAR ABILIO CARVALHO JUNIOR, Universidade de Brasília (UnB) - Brasília, DF, Brazil; RAMAYANA MENEZES BRAGA, CPAF-RR; PAULO LUIZ SOUZA CARNEIRO, Universidade Estadual Do Sudoeste da Bahia (UESB) - Vitória da Conquista - BA, Brazil; JOSE CARLOS FERRUGEM MORAES, CPPSUL; CARLOS JOSE HOFF DE SOUZA; OLIVARDO FACO, CNPC; SANDRA APARECIDA SANTOS; HYMERSON COSTA AZEVEDO, CPATC; ADRIANA MELLO DE ARAUJO, CPAMN; DEBORA ANDRÉA E. FAÇANHA, Federal Rural University of the Semi-arid Region (UFERSA) - Mossoró, RN, Brazil; PATRICIA IANELLA, Cenargen. |
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Título: |
Landscape genetics of sheep in Brazil using SNP markers. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Small Ruminant Research, v. 192, e106239, 2020. |
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DOI: |
https://doi.org/10.1016/j.smallrumres.2020.106239 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variability in future germplasm samplings for conservation of genetic resources. MenosAbstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variabili... Mostrar Tudo |
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Palavras-Chave: |
Delaunay triangulation; Genetic landscape shape; Mantel. |
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Thesaurus Nal: |
Brazil; Genetic polymorphism; Germplasm conservation; Sampling; Sheep; Sheep breeds; Single nucleotide polymorphism. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02793naa a2200433 a 4500
001 2134431
005 2021-09-15
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.smallrumres.2020.106239$2DOI
100 1 $aMcMANUS, C.
245 $aLandscape genetics of sheep in Brazil using SNP markers.$h[electronic resource]
260 $c2020
520 $aAbstract: The aim of this study was to explore spatial patterns of genetic structure in sheep breeds sampled in Brazil using Single Nucleotide Polymorphisms (SNPs) in order to evaluate whether or not the genetic and geographic dis-tances are interrelated in this species. Samples genotyped using the 50KSheepSNPChip (Illumina) included 215 animals from eight different sheep breeds. All collection sites were georeferenced and data analyzed to determine geographic patterns from genetic data. To evaluate the correlation between genetic and geographic distances Mantel tests, Allelic Aggregation Index Analyses (AAIA), and spatial autocorrelation were performed. Genetic Landscape Shape procedure and Monmonier?s Algorithm were used to generate graphical visualization of the genetic distances across the landscape. The observed correlation observed between genetic and geographical distances was 0.552 (P <0.00099). Observed AAIA results (Rave =0.16, P <0.001) indicated a non-random distribution of genotypes across the landscape. High genetic differentiation was observed in the Southern re-gions of Brazil, separating wool and hair sheep. Low genetic distances were observed between flocks and breeds from north and center-west regions, and may be the result of unrecorded introgressions resulting from past unknown crossbreeding events. Observed Spatial Autocorrelation Analyses results indicate a minimum distance of 400 km should be used between collection sites to maximize genetic variability in future germplasm samplings for conservation of genetic resources.
650 $aBrazil
650 $aGenetic polymorphism
650 $aGermplasm conservation
650 $aSampling
650 $aSheep
650 $aSheep breeds
650 $aSingle nucleotide polymorphism
653 $aDelaunay triangulation
653 $aGenetic landscape shape
653 $aMantel
700 1 $aPAIVA, S. R.
700 1 $aCAETANO, A. R.
700 1 $aHERMUCHE, P.
700 1 $aGUIMARÃES, R. F.
700 1 $aCARVALHO JUNIOR, O. A.
700 1 $aBRAGA, R. M.
700 1 $aCARNEIRO, P. L. S.
700 1 $aMORAES, J. C. F.
700 1 $aSOUZA, C. J. H. de
700 1 $aFACO, O.
700 1 $aSANTOS, S. A.
700 1 $aAZEVEDO, H. C.
700 1 $aARAUJO, A. M. de
700 1 $aFAÇANHA, D. A. E.
700 1 $aIANELLA, P.
773 $tSmall Ruminant Research$gv. 192, e106239, 2020.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/01/2019 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
VIANA, B. L.; MELO, A. C. L. de; GUIM, A.; LIRA, M. de A.; DUBEUX JÚNIOR, J. C. B.; SANTOS, M. V. F. dos; CUNHA, M. V. da. |
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Afiliação: |
Bruno Leal Viana, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; Alexandre Carneiro Leão de Mello, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; Adriana Guim, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; Mário de Andrade Lira, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; José Carlos Batista Dubeux Júnior, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; Mércia Virgínia Ferreira dos Santos, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia; Márcio Vieira da Cunha, Universidade Federal Rural de Pernambuco - UFPE/Departamento de Zootecnia. |
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Título: |
Morphological characteristics and proportion of leaf blade tissues of elephant grass clones under sheep grazing. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, p. 1268-1275, Nov. 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Características morfológicas e proporção de tecidos da lâmina foliar em clones de capim-elefante sob pastejo de ovelhas. |
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Conteúdo: |
The objective of this work was to characterize morphologically elephant grass (Pennisetum purpureum) genotypes and to estimate their proportions of leaf blade tissues under grazing. Two tall varieties (Elephant B and IRI-381) and three short ones (Mott, Taiwan A-146 2.37, and Taiwan A-146 2.114) were evaluated under intermittent sheep grazing as to the following morphological characteristics: plant height, internode length, and leaf blade/culm ratio. Moreover, the proportions of the following leaf blade tissues were estimated: sclerenchyma, adaxial and abaxial epidermis, bulliform cells, vascular bundles, phloem, vascular sheath, xylem, and mesophyll. The short varieties were 28.6% shorter than the tall ones and showed higher leaf blade/culm ratio; Mott and Taiwan A-146 2.114 had the shortest internodes of 3.9 and 4.7 cm, respectively, over ten grazing cycles. The clones differed regarding their proportions of leaf blade tissues, except for abaxial epidermis, phloem, and xylem. The differences in morphological characteristics indicate that the short clones Mott and Taiwan A-146 2.114 are better adapted to sheep grazing, and, therefore, may be recommended for the improvement of pastures. |
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Palavras-Chave: |
Anatomia de plantas; Capim-elefante anão; Dwarf elephant grass; Manejo de pastagens; Pequeno ruminante. |
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Thesagro: |
Pennisetum Purpureum. |
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Thesaurus NAL: |
Pasture management; Plant anatomy; Small ruminants. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189579/1/Morphological-characteristics-and-proportion.pdf
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Marc: |
LEADER 02330naa a2200313 a 4500
001 2102766
005 2019-02-25
008 2018 bl uuuu u00u1 u #d
100 1 $aVIANA, B. L.
245 $aMorphological characteristics and proportion of leaf blade tissues of elephant grass clones under sheep grazing.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Características morfológicas e proporção de tecidos da lâmina foliar em clones de capim-elefante sob pastejo de ovelhas.
520 $aThe objective of this work was to characterize morphologically elephant grass (Pennisetum purpureum) genotypes and to estimate their proportions of leaf blade tissues under grazing. Two tall varieties (Elephant B and IRI-381) and three short ones (Mott, Taiwan A-146 2.37, and Taiwan A-146 2.114) were evaluated under intermittent sheep grazing as to the following morphological characteristics: plant height, internode length, and leaf blade/culm ratio. Moreover, the proportions of the following leaf blade tissues were estimated: sclerenchyma, adaxial and abaxial epidermis, bulliform cells, vascular bundles, phloem, vascular sheath, xylem, and mesophyll. The short varieties were 28.6% shorter than the tall ones and showed higher leaf blade/culm ratio; Mott and Taiwan A-146 2.114 had the shortest internodes of 3.9 and 4.7 cm, respectively, over ten grazing cycles. The clones differed regarding their proportions of leaf blade tissues, except for abaxial epidermis, phloem, and xylem. The differences in morphological characteristics indicate that the short clones Mott and Taiwan A-146 2.114 are better adapted to sheep grazing, and, therefore, may be recommended for the improvement of pastures.
650 $aPasture management
650 $aPlant anatomy
650 $aSmall ruminants
650 $aPennisetum Purpureum
653 $aAnatomia de plantas
653 $aCapim-elefante anão
653 $aDwarf elephant grass
653 $aManejo de pastagens
653 $aPequeno ruminante
700 1 $aMELO, A. C. L. de
700 1 $aGUIM, A.
700 1 $aLIRA, M. de A.
700 1 $aDUBEUX JÚNIOR, J. C. B.
700 1 $aSANTOS, M. V. F. dos
700 1 $aCUNHA, M. V. da
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 11, p. 1268-1275, Nov. 2018.
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Embrapa Unidades Centrais (AI-SEDE) |
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