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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
03/12/2001 |
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Data da última atualização: |
03/12/2001 |
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Autoria: |
OLIVEIRA, F. das C. |
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Título: |
Uso e manejo da agua na producao de manga nas condicoes subumidas do Meio-Norte do Brasil |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Cruz das Almas, BA, Universidade Federal da Bahia - EAUFBA, 2001 |
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Páginas: |
92p. |
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Série: |
Tese Mestrado |
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Idioma: |
Português |
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Conteúdo: |
O presente trabaljo teve como escopo definir uma estrategia de manejo eficiente da agua de irrigacao que permita a maximizacao da producao da cultura da manga possibilitando um uso mais eficiente, racional e sustentavel da agua nesta cultura. Os trabalhadores foram desenvolvidos em area da empresa Mangal - Frutas Tropicais de Exportacao Ltda, situada no Km 35 da rodovia Teresina - Palmeirais - PI, que possui uma areaplantada de 150 ha de manga da variedade Tommy Atkins, em espacamento de 7 x 9m, irrigada com microaspersao. O delineamento experimental utilizado foi o em blocos casualizados, com seis tratamentos (seis regimes de irrigacao) e quatro repeticoes, em quatro fileiras de plantas, com a parcela experimental composta de quatro plantas, sendo bordadura as duas plantas externas e uteis as duas internas. Os tratamentos depois de estabelecidos, apresemtaram-se da seguinte maneira: sem irrigacaoe com irrigacao de 0,44, 0,55, 0,86, 1,00 e 1,37 da ETo determinada a partir da evaporacao do tanque classe A. Foram avaliados os componentes da producao (produtividade, peso e numero de frutos por planta), as caracteristicas fisico-quimicas dos frutos (% de polpa, casca e semente, comprimento e diametro do fruto, solido soluveis totais, acidez total titulavel, relacao SST/ATT e pH) e a distribuicao do sistema radicular. |
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Palavras-Chave: |
Distribuicao de raizes; Manejo da irrigacao; Root distribution. |
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Thesagro: |
Evapotranspiração; Mangifera Indica. |
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Thesaurus Nal: |
evapotranspiration; irrigation management. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01998nam a2200217 a 4500
001 1651592
005 2001-12-03
008 2001 bl uuuu m 00u1 u #d
100 1 $aOLIVEIRA, F. das C.
245 $aUso e manejo da agua na producao de manga nas condicoes subumidas do Meio-Norte do Brasil
260 $aCruz das Almas, BA, Universidade Federal da Bahia - EAUFBA$c2001
300 $a92p.
490 $aTese Mestrado
520 $aO presente trabaljo teve como escopo definir uma estrategia de manejo eficiente da agua de irrigacao que permita a maximizacao da producao da cultura da manga possibilitando um uso mais eficiente, racional e sustentavel da agua nesta cultura. Os trabalhadores foram desenvolvidos em area da empresa Mangal - Frutas Tropicais de Exportacao Ltda, situada no Km 35 da rodovia Teresina - Palmeirais - PI, que possui uma areaplantada de 150 ha de manga da variedade Tommy Atkins, em espacamento de 7 x 9m, irrigada com microaspersao. O delineamento experimental utilizado foi o em blocos casualizados, com seis tratamentos (seis regimes de irrigacao) e quatro repeticoes, em quatro fileiras de plantas, com a parcela experimental composta de quatro plantas, sendo bordadura as duas plantas externas e uteis as duas internas. Os tratamentos depois de estabelecidos, apresemtaram-se da seguinte maneira: sem irrigacaoe com irrigacao de 0,44, 0,55, 0,86, 1,00 e 1,37 da ETo determinada a partir da evaporacao do tanque classe A. Foram avaliados os componentes da producao (produtividade, peso e numero de frutos por planta), as caracteristicas fisico-quimicas dos frutos (% de polpa, casca e semente, comprimento e diametro do fruto, solido soluveis totais, acidez total titulavel, relacao SST/ATT e pH) e a distribuicao do sistema radicular.
650 $aevapotranspiration
650 $airrigation management
650 $aEvapotranspiração
650 $aMangifera Indica
653 $aDistribuicao de raizes
653 $aManejo da irrigacao
653 $aRoot distribution
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Classificação |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Cerrados. |
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Data corrente: |
14/10/2016 |
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Data da última atualização: |
08/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LOPES, F. B.; SILVA, M. C. da; MAGNABOSCO, C. de U.; NARCISO, M. G.; GONZALEZ, R. D. S. |
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Afiliação: |
CLAUDIO DE ULHOA MAGNABOSCO, CPAC; MARCELO GONCALVES NARCISO, CNPAF; ROBERTO DANIEL SAINZ GONZALEZ, CPAC. |
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Título: |
Selection indices and multivariate analysis show similar results in the evaluation of growth and carcass traits in beef cattle. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Plos one, Jan. 2016. |
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DOI: |
10.1371/journal.pone.0147180 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
This research evaluated a multivariate approach as an alternative tool for the purpose of selection regarding expected progeny differences (EPDs). Data were fitted using a multi- trait model and consisted of growth traits (birth weight and weights at 120, 210, 365 and 450 days of age) and carcass traits (longissimus muscle area (LMA), back-fat thickness (BF), and rump fat thickness (RF)), registered over 21 years in extensive breeding systems of Polled Nellore cattle in Brazil. Multivariate analyses were performed using standardized (zero mean and unit variance) EPDs. The k mean method revealed that the best fit of data occurred using three clusters (k = 3) (P <0.001). Estimates of genetic correlation among growth and carcass traits and the estimates of heritability were moderate to high, suggesting that a correlated response approach is suitable for practical decision making. Estimates of correlation between selection indices and the multivariate index (LD1) were moderate to high, ranging from 0.48 to 0.97. This reveals that both types of indices give similar results and that the multivariate approach is reliable for the purpose of selection. The alternative tool seems very handy when economic weights are not available or in cases where more rapid identification of the best animals is desired. Interestingly, multivariate analysis allowed forecasting information based on the relationships among breeding values (EPDs). Also, it enabled fine discrimination, rapid data summarization after genetic evaluation, and permitted accounting for maternal ability and the genetic direct potential of the animals. In addition, we recommend the use of longissimus muscle area and subcutaneous fat thickness as selection criteria, to allow estimation of breeding values before the first mating season in order to accelerate the response to individual selection. MenosThis research evaluated a multivariate approach as an alternative tool for the purpose of selection regarding expected progeny differences (EPDs). Data were fitted using a multi- trait model and consisted of growth traits (birth weight and weights at 120, 210, 365 and 450 days of age) and carcass traits (longissimus muscle area (LMA), back-fat thickness (BF), and rump fat thickness (RF)), registered over 21 years in extensive breeding systems of Polled Nellore cattle in Brazil. Multivariate analyses were performed using standardized (zero mean and unit variance) EPDs. The k mean method revealed that the best fit of data occurred using three clusters (k = 3) (P <0.001). Estimates of genetic correlation among growth and carcass traits and the estimates of heritability were moderate to high, suggesting that a correlated response approach is suitable for practical decision making. Estimates of correlation between selection indices and the multivariate index (LD1) were moderate to high, ranging from 0.48 to 0.97. This reveals that both types of indices give similar results and that the multivariate approach is reliable for the purpose of selection. The alternative tool seems very handy when economic weights are not available or in cases where more rapid identification of the best animals is desired. Interestingly, multivariate analysis allowed forecasting information based on the relationships among breeding values (EPDs). Also, it enabled fine discrimination, rapid data summariz... Mostrar Tudo |
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Palavras-Chave: |
Análise multivariada; Avaliação genética. |
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Thesagro: |
Carcaça; Gado nelore. |
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Categoria do assunto: |
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L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/148775/1/Magnabosco-Selection-indices.pdf
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Marc: |
LEADER 02580naa a2200229 a 4500
001 2054677
005 2017-02-08
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1371/journal.pone.0147180$2DOI
100 1 $aLOPES, F. B.
245 $aSelection indices and multivariate analysis show similar results in the evaluation of growth and carcass traits in beef cattle.$h[electronic resource]
260 $c2016
520 $aThis research evaluated a multivariate approach as an alternative tool for the purpose of selection regarding expected progeny differences (EPDs). Data were fitted using a multi- trait model and consisted of growth traits (birth weight and weights at 120, 210, 365 and 450 days of age) and carcass traits (longissimus muscle area (LMA), back-fat thickness (BF), and rump fat thickness (RF)), registered over 21 years in extensive breeding systems of Polled Nellore cattle in Brazil. Multivariate analyses were performed using standardized (zero mean and unit variance) EPDs. The k mean method revealed that the best fit of data occurred using three clusters (k = 3) (P <0.001). Estimates of genetic correlation among growth and carcass traits and the estimates of heritability were moderate to high, suggesting that a correlated response approach is suitable for practical decision making. Estimates of correlation between selection indices and the multivariate index (LD1) were moderate to high, ranging from 0.48 to 0.97. This reveals that both types of indices give similar results and that the multivariate approach is reliable for the purpose of selection. The alternative tool seems very handy when economic weights are not available or in cases where more rapid identification of the best animals is desired. Interestingly, multivariate analysis allowed forecasting information based on the relationships among breeding values (EPDs). Also, it enabled fine discrimination, rapid data summarization after genetic evaluation, and permitted accounting for maternal ability and the genetic direct potential of the animals. In addition, we recommend the use of longissimus muscle area and subcutaneous fat thickness as selection criteria, to allow estimation of breeding values before the first mating season in order to accelerate the response to individual selection.
650 $aCarcaça
650 $aGado nelore
653 $aAnálise multivariada
653 $aAvaliação genética
700 1 $aSILVA, M. C. da
700 1 $aMAGNABOSCO, C. de U.
700 1 $aNARCISO, M. G.
700 1 $aGONZALEZ, R. D. S.
773 $tPlos one, Jan. 2016.
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Embrapa Cerrados (CPAC) |
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