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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
23/11/2016 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PACIULLO, D. S. C.; GOMIDE, C. A. de M.; CASTRO, C. R. T. de; MAURÍCIO, R. M.; FERNANDES, P. B.; MORENZ, M. J. F. |
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Afiliação: |
DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; CARLOS RENATO TAVARES DE CASTRO, CNPGL; R. M. Maurício, UFSJ; P. B. Fernandes; MIRTON JOSE FROTA MORENZ, CNPGL. |
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Título: |
Morphogenesis, biomass and nutritive value of Panicum maximum under different shade levels and fertilizer nitrogen rates. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Grass and Forage Science, v. 72, n. 3, p. 590-600, 2017. |
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DOI: |
https://doi.org/10.1111/gfs.12264 |
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Idioma: |
Inglês |
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Conteúdo: |
Panicum maximum is important for cattle production in tropical regions, and it responds well to nitrogen (N) fertilization. Many cultivars have exhibited potential for use in silvopastoral systems, although there is limited information on how different levels of N can influence plant growth and nutritive value under shading. Morphogenetic and structural traits, biomass production and nutritive value of two P. maximum cultivars (Tanzania and Massai) were investigated under three shading levels (0, 37 and 58%) and four N rates (0, 50, 100 and 150 mg N dm3). Plants were grown in pots under shade. Leaf and stem elongation rate and leaf blade length increased with shading and in response to N. Tiller density was reduced with shading, but showed a linear increase fashion with N under full sun and moderate shading. Under intense shading, the tillering showed a quadratic response to N. Plant biomass production increased linearly with N under full sun and moderate shade, but it increased quadratically under intense shade. Crude protein (CP) content increased with shade and N and was greater for Tanzania than Massai under shade. Contents of NDF and ADF were greater for Massai than Tanzania. Acid detergent insoluble protein was reduced in Tanzania under shade, but it increased for Massai. It is suggested that the positive shading effect on CP content may not result in increased nutritional value. Although N fertilization was important for increasing biomass production under full sun and moderate shade, it should be avoided under intense shading. MenosPanicum maximum is important for cattle production in tropical regions, and it responds well to nitrogen (N) fertilization. Many cultivars have exhibited potential for use in silvopastoral systems, although there is limited information on how different levels of N can influence plant growth and nutritive value under shading. Morphogenetic and structural traits, biomass production and nutritive value of two P. maximum cultivars (Tanzania and Massai) were investigated under three shading levels (0, 37 and 58%) and four N rates (0, 50, 100 and 150 mg N dm3). Plants were grown in pots under shade. Leaf and stem elongation rate and leaf blade length increased with shading and in response to N. Tiller density was reduced with shading, but showed a linear increase fashion with N under full sun and moderate shading. Under intense shading, the tillering showed a quadratic response to N. Plant biomass production increased linearly with N under full sun and moderate shade, but it increased quadratically under intense shade. Crude protein (CP) content increased with shade and N and was greater for Tanzania than Massai under shade. Contents of NDF and ADF were greater for Massai than Tanzania. Acid detergent insoluble protein was reduced in Tanzania under shade, but it increased for Massai. It is suggested that the positive shading effect on CP content may not result in increased nutritional value. Although N fertilization was important for increasing biomass production under full sun an... Mostrar Tudo |
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Palavras-Chave: |
Fertilization; Shading; Tiller population density. |
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Thesaurus Nal: |
chemical composition; forage production; silvopastoral systems. |
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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/1056931/1/Morphogenesis-biomass-and-nutritive-value-of-Panicum-maximum.pdf
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Marc: |
LEADER 02420naa a2200265 a 4500
001 2056931
005 2024-02-06
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/gfs.12264$2DOI
100 1 $aPACIULLO, D. S. C.
245 $aMorphogenesis, biomass and nutritive value of Panicum maximum under different shade levels and fertilizer nitrogen rates.$h[electronic resource]
260 $c2016
520 $aPanicum maximum is important for cattle production in tropical regions, and it responds well to nitrogen (N) fertilization. Many cultivars have exhibited potential for use in silvopastoral systems, although there is limited information on how different levels of N can influence plant growth and nutritive value under shading. Morphogenetic and structural traits, biomass production and nutritive value of two P. maximum cultivars (Tanzania and Massai) were investigated under three shading levels (0, 37 and 58%) and four N rates (0, 50, 100 and 150 mg N dm3). Plants were grown in pots under shade. Leaf and stem elongation rate and leaf blade length increased with shading and in response to N. Tiller density was reduced with shading, but showed a linear increase fashion with N under full sun and moderate shading. Under intense shading, the tillering showed a quadratic response to N. Plant biomass production increased linearly with N under full sun and moderate shade, but it increased quadratically under intense shade. Crude protein (CP) content increased with shade and N and was greater for Tanzania than Massai under shade. Contents of NDF and ADF were greater for Massai than Tanzania. Acid detergent insoluble protein was reduced in Tanzania under shade, but it increased for Massai. It is suggested that the positive shading effect on CP content may not result in increased nutritional value. Although N fertilization was important for increasing biomass production under full sun and moderate shade, it should be avoided under intense shading.
650 $achemical composition
650 $aforage production
650 $asilvopastoral systems
653 $aFertilization
653 $aShading
653 $aTiller population density
700 1 $aGOMIDE, C. A. de M.
700 1 $aCASTRO, C. R. T. de
700 1 $aMAURÍCIO, R. M.
700 1 $aFERNANDES, P. B.
700 1 $aMORENZ, M. J. F.
773 $tGrass and Forage Science$gv. 72, n. 3, p. 590-600, 2017.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
27/02/2019 |
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Data da última atualização: |
27/02/2019 |
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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: |
MATIAS, F. I.; BARRIOS, S. C. L.; BEARARI, L. M.; MEIRELES, K. G. X.; MATEUS, R. G.; AMARAL, P. N. C. do; ALVES, G. F.; VALLE, C. B. do; FRITSCHE-NETO, R. |
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Afiliação: |
FILIPE INÁCIO MATIAS, Universidade de São PAULO - USP/Escola Superior de Agricultura Luiz de Queiroz - ESALQ/Departamento de Genética; SANZIO CARVALHO LIMA BARRIOS, CNPGC; LUCAS MARTINS BEARARI, Universidade Estadual de Mato Grosso do Sul - UEMS; KAREM GUIMARAES XAVIER MEIRELES, CNPGC; ROGÉRIO GONÇALVES MATEUS, Universidade Estadual de Mato Grosso do Sul - UEMS; PEDRO NELSON CESAR DO AMARAL, Universidade Estadual de Mato Grosso do Sul - UEMS; GEOVANI FERREIRA ALVES, Universidade Federal de Mato Grosso do Sul - UFMS; CACILDA BORGES DO VALLE, CNPGC; ROBERTO FRITSCHE-NETO, Universidade de São PAULO - USP/Escola Superior de Agricultura Luiz de Queiroz - ESALQ/Departamento de Genética. |
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Título: |
Contribution of Additive and Dominance Effects on Agronomical and Nutritional Traits, and Multivariate Selection on Urochloa spp. Hybrids. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Crop Science, v. 58, n. 6, p. 2444-2458, November/December, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
A tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univariate level, promoted a more balanced response to selection for all traits. MenosA tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univar... Mostrar Tudo |
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Thesagro: |
Apomixia; Controle Genético; Cruzamento Animal; Forrageira Tropical; Gramínea Perene; Hibrido. |
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Thesaurus NAL: |
Breeding; Grasslands; Hybrids; Livestock; Perennials; Polyploidy; Urochloa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/193437/1/Contribution-of-additive-and-dominance.pdf
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Marc: |
LEADER 02652naa a2200373 a 4500
001 2106550
005 2019-02-27
008 2018 bl uuuu u00u1 u #d
100 1 $aMATIAS, F. I.
245 $aContribution of Additive and Dominance Effects on Agronomical and Nutritional Traits, and Multivariate Selection on Urochloa spp. Hybrids.$h[electronic resource]
260 $c2018
520 $aA tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univariate level, promoted a more balanced response to selection for all traits.
650 $aBreeding
650 $aGrasslands
650 $aHybrids
650 $aLivestock
650 $aPerennials
650 $aPolyploidy
650 $aUrochloa
650 $aApomixia
650 $aControle Genético
650 $aCruzamento Animal
650 $aForrageira Tropical
650 $aGramínea Perene
650 $aHibrido
700 1 $aBARRIOS, S. C. L.
700 1 $aBEARARI, L. M.
700 1 $aMEIRELES, K. G. X.
700 1 $aMATEUS, R. G.
700 1 $aAMARAL, P. N. C. do
700 1 $aALVES, G. F.
700 1 $aVALLE, C. B. do
700 1 $aFRITSCHE-NETO, R.
773 $tCrop Science$gv. 58, n. 6, p. 2444-2458, November/December, 2018.
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