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Registro Completo |
Biblioteca(s): |
Embrapa Soja; Embrapa Unidades Centrais. |
Data corrente: |
27/11/2006 |
Data da última atualização: |
04/03/2008 |
Autoria: |
YAMANAKA, N.; FUENTES, F. H.; GILLI, J. R.; WATANABE, S.; HARADA, K.; BAN, T.; ABDELNOOR, R. V.; NEPOMUCENO, A. L.; HOMMA, Y. |
Título: |
Identification of quantitative trait loci for resistance against soybean sudden death syndrome caused by Fusarium tucumaniae. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 9, p. 1385-1391, set. 2006. |
Idioma: |
Inglês Português |
Conteúdo: |
The objective of this work was to identify genomic regions that underlie resistance to Fusarium tucumaniae sp. nov., the causing agent of sudden death syndrome (SDS) in soybean in South America, using a population with a genetic background different from that previously reported for Fusarium virguliforme sp. nov. (F. solani f. sp. glycines), also responsible for SDS in soybean. Although major genes and quantitative trait loci (QTL) for SDS resistance have been identified, little is known about the same disease caused by Fusarium tucumaniae sp. nov., in South America. To identify genetic factors related to resistance to F. tucumaniae and DNA markers associated with them, a QTL analysis was performed using recombinant inbred lines. The map locations of the four loci, here identified, differed from those SDS resistance QTL previously described. It was screened a residual heterozygous line (RHL), which was heterozygous around the most effective QTL, RSDS1, and homozygous for the other genomic regions. The genetic effect of RSDS1 was confirmed using near-isogenic lines (NIL) derived from the RHL. The line which was homozygous for the Misuzudaizu genotype showed resistance levels comparable with that of the line homozygous for the Moshidou Gong 503 genotype. |
Palavras-Chave: |
disease index; índice de doença; linha heterozigota residual; residual heterozygous line; SDS; Síndrome da morte súbita da soja. |
Thesagro: |
Doença; Glycine Max; Soja. |
Categoria do assunto: |
-- |
URL: |
https://webnotes.sct.embrapa.br/pab/pab.nsf/FrAnual
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/40711/1/41n09a06.pdf
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Marc: |
LEADER 02236naa a2200325 a 4500 001 1469725 005 2008-03-04 008 2006 bl uuuu u00u1 u #d 100 1 $aYAMANAKA, N. 245 $aIdentification of quantitative trait loci for resistance against soybean sudden death syndrome caused by Fusarium tucumaniae. 260 $c2006 520 $aThe objective of this work was to identify genomic regions that underlie resistance to Fusarium tucumaniae sp. nov., the causing agent of sudden death syndrome (SDS) in soybean in South America, using a population with a genetic background different from that previously reported for Fusarium virguliforme sp. nov. (F. solani f. sp. glycines), also responsible for SDS in soybean. Although major genes and quantitative trait loci (QTL) for SDS resistance have been identified, little is known about the same disease caused by Fusarium tucumaniae sp. nov., in South America. To identify genetic factors related to resistance to F. tucumaniae and DNA markers associated with them, a QTL analysis was performed using recombinant inbred lines. The map locations of the four loci, here identified, differed from those SDS resistance QTL previously described. It was screened a residual heterozygous line (RHL), which was heterozygous around the most effective QTL, RSDS1, and homozygous for the other genomic regions. The genetic effect of RSDS1 was confirmed using near-isogenic lines (NIL) derived from the RHL. The line which was homozygous for the Misuzudaizu genotype showed resistance levels comparable with that of the line homozygous for the Moshidou Gong 503 genotype. 650 $aDoença 650 $aGlycine Max 650 $aSoja 653 $adisease index 653 $aíndice de doença 653 $alinha heterozigota residual 653 $aresidual heterozygous line 653 $aSDS 653 $aSíndrome da morte súbita da soja 700 1 $aFUENTES, F. H. 700 1 $aGILLI, J. R. 700 1 $aWATANABE, S. 700 1 $aHARADA, K. 700 1 $aBAN, T. 700 1 $aABDELNOOR, R. V. 700 1 $aNEPOMUCENO, A. L. 700 1 $aHOMMA, Y. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 41, n. 9, p. 1385-1391, set. 2006.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
07/07/2017 |
Data da última atualização: |
22/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
LOPES, C. M.; PACIULLO, D. S. C.; ARAÚJO, S. A. do C.; MORENZ, M. J. F.; GOMIDE, C. A. de M.; MAURÍCIO, R. M.; BRAZ, T. G. dos S. |
Afiliação: |
Clenardo Macedo Lopes, UFVJM; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; Saulo Alberto do Carmo Araújo, UFVJM; MIRTON JOSE FROTA MORENZ, CNPGL; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; Rogério Martins Maurício, UFSJ; Thiago Gomes dos Santos Braz, UFMG. |
Título: |
Plant morphology and herbage accumulation of signal grass with or without fertilization, under different light regimes. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Ciência Rural, v. 47, n. 2, e20160472, 2017. |
DOI: |
https://doi.org/10.1590/0103-8478cr20160472 |
Idioma: |
Inglês |
Conteúdo: |
ABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem. O objetivo deste estudo foi avaliar a morfogênese, a estrutura do dossel e o acúmulo de forragem deBrachiaria decumbens , submetida a três regimes de luz (0, 20 e 70% de sombreamento natural) e dois níveis de fertilização (presença ou ausência de nitrogênio, fósforo e potássio). As taxas de alongamento de folhas e colmos aumentaram com o sombreamento, mas não variaram com a fertilização. A taxa de aparecimento de folhas foi maior com a fertilização, mas, em geral, foi semelhante entre os níveis de sombra. A densidade de perfilhos foi maior no sol pleno e menor na sombra intensa. A densidade de perfilhos respondeu à fertilização sob sol pleno e sombra moderada. O acúmulo de forragem aumentou 42% com a fertilização no sol pleno, 12% na sombra moderada e não variou na sombra intensa. Os resultados mostraram que, mesmo com uso de fertilização, o acúmulo de forragem foi limitado pela redução de luz. Em condições de sombra moderada, a fertilização foi importante para aumentar a população de perfilhos ao longo dos ciclos de crescimento. MenosABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem.... Mostrar Tudo |
Palavras-Chave: |
Shading; Silvopastoral system; Tiller density. |
Thesagro: |
Brachiaria Decumbens. |
Thesaurus NAL: |
morphogenesis. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161522/1/Cnpgl-2017-CiRural-Lopes-Plant.pdf
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Marc: |
LEADER 03431naa a2200265 a 4500 001 2072260 005 2022-08-22 008 2017 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1590/0103-8478cr20160472$2DOI 100 1 $aLOPES, C. M. 245 $aPlant morphology and herbage accumulation of signal grass with or without fertilization, under different light regimes.$h[electronic resource] 260 $c2017 520 $aABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem. O objetivo deste estudo foi avaliar a morfogênese, a estrutura do dossel e o acúmulo de forragem deBrachiaria decumbens , submetida a três regimes de luz (0, 20 e 70% de sombreamento natural) e dois níveis de fertilização (presença ou ausência de nitrogênio, fósforo e potássio). As taxas de alongamento de folhas e colmos aumentaram com o sombreamento, mas não variaram com a fertilização. A taxa de aparecimento de folhas foi maior com a fertilização, mas, em geral, foi semelhante entre os níveis de sombra. A densidade de perfilhos foi maior no sol pleno e menor na sombra intensa. A densidade de perfilhos respondeu à fertilização sob sol pleno e sombra moderada. O acúmulo de forragem aumentou 42% com a fertilização no sol pleno, 12% na sombra moderada e não variou na sombra intensa. Os resultados mostraram que, mesmo com uso de fertilização, o acúmulo de forragem foi limitado pela redução de luz. Em condições de sombra moderada, a fertilização foi importante para aumentar a população de perfilhos ao longo dos ciclos de crescimento. 650 $amorphogenesis 650 $aBrachiaria Decumbens 653 $aShading 653 $aSilvopastoral system 653 $aTiller density 700 1 $aPACIULLO, D. S. C. 700 1 $aARAÚJO, S. A. do C. 700 1 $aMORENZ, M. J. F. 700 1 $aGOMIDE, C. A. de M. 700 1 $aMAURÍCIO, R. M. 700 1 $aBRAZ, T. G. dos S. 773 $tCiência Rural$gv. 47, n. 2, e20160472, 2017.
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