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Registro Completo |
Biblioteca(s): |
Embrapa Amapá; Embrapa Amazônia Oriental; Embrapa Florestas. |
Data corrente: |
26/10/2001 |
Data da última atualização: |
12/12/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FARIAS NETO, J. T. de; RESENDE, M. D. V. de. |
Afiliação: |
JOAO TOME DE FARIAS NETO, CPATU; MARCOS DEON VILELA DE RESENDE, CNPF. |
Título: |
Aplicação da metodologia de modelos mistos (REML/BLUP) na estimação de componentes de variância e predição de valores genéticos em pupunheira (Bactris gasipaes). |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
Revista Brasileira de Fruticultura, Jaboticabal, v. 23, n. 2, p. 320-324, ago. 2001. |
Descrição Física: |
il. |
Idioma: |
Português |
Conteúdo: |
O trabalho objetivou a estimacao de componentes de variancia, herdabilidade e predicao de valores geneticos para varios caracteres em teste de progenies de pupunheira, bem como a comparacao entre os procedimentos REML/BLUP e analise de variancia no processo de estimacao. |
Palavras-Chave: |
Componente de variancia; Espécie perene; Genetica quantitativa; Herdabilidade; Modelo linear; Modelos lineares; Predição de variável aleatória; Tamanho efetivo; Variabilidade genética; Variaveis aleatorias. |
Thesagro: |
Bactris Gasipaes; Método Estatístico; Pupunha; Teste de Progênie. |
Thesaurus Nal: |
linear models; quantitative genetics. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38236/1/RevistaBrasileiraFruticultura-1.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/28229/1/7974.pdf
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Marc: |
LEADER 01374naa a2200337 a 4500 001 1403865 005 2016-12-12 008 2001 bl uuuu u00u1 u #d 100 1 $aFARIAS NETO, J. T. de 245 $aAplicação da metodologia de modelos mistos (REML/BLUP) na estimação de componentes de variância e predição de valores genéticos em pupunheira (Bactris gasipaes). 260 $c2001 300 $cil. 520 $aO trabalho objetivou a estimacao de componentes de variancia, herdabilidade e predicao de valores geneticos para varios caracteres em teste de progenies de pupunheira, bem como a comparacao entre os procedimentos REML/BLUP e analise de variancia no processo de estimacao. 650 $alinear models 650 $aquantitative genetics 650 $aBactris Gasipaes 650 $aMétodo Estatístico 650 $aPupunha 650 $aTeste de Progênie 653 $aComponente de variancia 653 $aEspécie perene 653 $aGenetica quantitativa 653 $aHerdabilidade 653 $aModelo linear 653 $aModelos lineares 653 $aPredição de variável aleatória 653 $aTamanho efetivo 653 $aVariabilidade genética 653 $aVariaveis aleatorias 700 1 $aRESENDE, M. D. V. de 773 $tRevista Brasileira de Fruticultura, Jaboticabal$gv. 23, n. 2, p. 320-324, ago. 2001.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sul. |
Data corrente: |
02/12/2022 |
Data da última atualização: |
02/12/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
KRAHL, G.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; WERNER, S. S.; LOPES, C. F.; RIBEIRO FILHO, H. M. N. |
Afiliação: |
GUSTAVO KRAHL, University of the West of Santa Catarina; TIAGO CELSO BALDISSERA, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; CASSIANO EDUARDO PINTO, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; FABIO CERVO GARAGORRY, CPPSUL; SIMONE SILMARA WERNER, Epagri - Company of Agricultural Research and Rural Extension of Santa Catarina; CÁSSIO FELIPE LOPES, Santa Catarina State University; HENRIQUE MENDONÇA NUNES RIBEIRO FILHO, Santa Catarina State University. |
Título: |
Can pasture defoliation management targets be similar under full sun and shaded conditions? |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Crop & Pasture Science, 21592, 31 Aug. 2022. |
Idioma: |
Inglês |
Notas: |
Online early. |
Conteúdo: |
Abstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation canopy height should be avoided when managing A. catharinensis, regardless of the light environment. Implications: Recommended targets may be easily implemented by livestock producers and are similar for full sun and shade environments. Keywords: Axonopus catharinensis Valls, canopy height, defoliation severity, defoliation target, herbage accumulation, integrated crop-livestock systems, tiller density. MenosAbstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation ca... Mostrar Tudo |
Thesagro: |
Altura; Desfolha; Integração; Pastagem. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02620naa a2200253 a 4500 001 2149158 005 2022-12-02 008 2022 bl uuuu u00u1 u #d 100 1 $aKRAHL, G. 245 $aCan pasture defoliation management targets be similar under full sun and shaded conditions?$h[electronic resource] 260 $c2022 500 $aOnline early. 520 $aAbstract Context: Defoliation management targets applied to forages under the full sun have not yet been properly evaluated for shaded environments such as occur in integrated crop?livestock systems with the presence of trees. Aims: This study aimed to determine defoliation targets under full sun and shaded environments for the shade-tolerant perennial summer grass hybrid Axonopus catharinensis (giant missionary grass), widely used in pasture systems of South Brazil and Argentina. Methods: Four pre-defoliation canopy heights (15, 25, 35 and 45 cm) and four defoliation severities (20%, 40%, 60% and 80% reduction in pre-defoliation canopy height) were evaluated. Plants were grown in 0.15 m3 wooden boxes filled with sand/vermiculite substrate (1:1 v/v) and irrigated with a complete nutrient solution. An artificial shade structure was made with wooden slats, reducing light intensity by 50% for shaded plants. Key results: Herbage accumulation decreased by 54% in shaded plants compared with those under full sun. Regardless of the light environment, the lowest crude protein content (<150 g/kg dry matter) and the highest neutral detergent fibre content (>650 g/kg dry matter) were observed when the defoliation target height was >35 cm. Both shaded and full sun environments showed decreases in tiller density when defoliation severity was >60% of pre-defoliation canopy heights. Conclusions: Pre-defoliation canopy heights >35 cm and defoliation severity >60% of pre-defoliation canopy height should be avoided when managing A. catharinensis, regardless of the light environment. Implications: Recommended targets may be easily implemented by livestock producers and are similar for full sun and shade environments. Keywords: Axonopus catharinensis Valls, canopy height, defoliation severity, defoliation target, herbage accumulation, integrated crop-livestock systems, tiller density. 650 $aAltura 650 $aDesfolha 650 $aIntegração 650 $aPastagem 700 1 $aBALDISSERA, T. C. 700 1 $aPINTO, C. E. 700 1 $aGARAGORRY, F. C. 700 1 $aWERNER, S. S. 700 1 $aLOPES, C. F. 700 1 $aRIBEIRO FILHO, H. M. N. 773 $tCrop & Pasture Science, 21592, 31 Aug. 2022.
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