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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
18/12/2017 |
Data da última atualização: |
18/12/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CORRÊA, T. R.; PICOLI, E. A. de T.; SOUZA, G. A. de; CONDÉ, S. A.; SILVA, N. M.; LOPES-MATTOS, K. L. B.; RESENDE, M. D. V. de; ZAUZA, E. A. V.; ODA, S. |
Afiliação: |
THAIS ROSELI CORRÊA, UNIVERSIDADE FEDERAL DE VIÇOSA; EDGARD AUGUSTO DE TOLEDO PICOLI, UNIVERSIDADE FEDERAL DE VIÇOSA; GENAÍNA APARECIDA DE SOUZA, UNIVERSIDADE FEDERAL DE VIÇOSA; SAMYRA ALVES CONDÉ, UNIVERSIDADE FEDERAL DE VIÇOSA; NATÁLIA MACHADO SILVA, UNIVERSIDADE FEDERAL DE VIÇOSA; KARINA LUCAS BARBOSA LOPES-MATTOS, UNIVERSIDADE FEDERAL DE VIÇOSA; MARCOS DEON VILELA DE RESENDE, CNPF; EDIVAL ANGELO VALVERDE ZAUZA, SUZANO PAPEL E CELULOSE SA; SHINITIRO ODA, SUZANO PAPEL E CELULOSE SA. |
Título: |
Phenotypic markers in early selection for tolerance to dieback in Eucalyptus. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Industrial Crops and Products, v. 107, p. 130-138, 2017. |
DOI: |
http://dx.doi.org/10.1016/j.indcrop.2017.05.032 |
Idioma: |
Inglês |
Conteúdo: |
Eucalyptus dieback is a physiological disorder characterized by lesions on the apex of the branches and the death of the shoot apex. Some clones are considered tolerant to this disorder, although, up to now, there are no reports on the use of phenotypic markers for selecting tolerant material. The use of phenotypic markers may contribute to an efficient selection, where the estimation of genetic parameters of the candidate markers are essential to knowledge of the population structure, the genetic potential and effectiveness of markers as selection criteria. In this study, we estimated the genetic parameters of morphological and nutritional markers in 13 commercial eucalyptus clones aiming early selection of tolerant genotypes to eucalyptus dieback. Estimates of the genetic parameters of all characteristics were obtained by the mixed model methodology, REML (Restricted Maximum Likelihood)/BLUP (Best Linear Unbiased Prediction) procedure. Water deficit, one of the factors that promote this disorder, was simulated in eucalyptus cuttings conducted in a greenhouse. Simulated water stress was carried out for 12 weeks by applying polyethylene glycol at different concentrations and by limiting water applied to seedlings. In order to select the most promising markers, 34 morphological and nutritional variables were evaluated for early selection and discrimination of genotypes tolerant to eucalyptus dieback and water deficit. Among the 34 evaluated characteristics, plant height, stem diameter, height increment, leaf area, N, K and B, exhibited significant heritability and high accuracy (greater than 70%). Promising phenotypic markers were identified for early selection of genotypes tolerant to water deficit and eucalyptus dieback. Tolerant clones were pooled and correctly discriminated from the susceptible ones under stressful conditions by the use of seven phenotypic markers in REML/BLUP analysis, selection index ranking and graphic dispersion analysis. MenosEucalyptus dieback is a physiological disorder characterized by lesions on the apex of the branches and the death of the shoot apex. Some clones are considered tolerant to this disorder, although, up to now, there are no reports on the use of phenotypic markers for selecting tolerant material. The use of phenotypic markers may contribute to an efficient selection, where the estimation of genetic parameters of the candidate markers are essential to knowledge of the population structure, the genetic potential and effectiveness of markers as selection criteria. In this study, we estimated the genetic parameters of morphological and nutritional markers in 13 commercial eucalyptus clones aiming early selection of tolerant genotypes to eucalyptus dieback. Estimates of the genetic parameters of all characteristics were obtained by the mixed model methodology, REML (Restricted Maximum Likelihood)/BLUP (Best Linear Unbiased Prediction) procedure. Water deficit, one of the factors that promote this disorder, was simulated in eucalyptus cuttings conducted in a greenhouse. Simulated water stress was carried out for 12 weeks by applying polyethylene glycol at different concentrations and by limiting water applied to seedlings. In order to select the most promising markers, 34 morphological and nutritional variables were evaluated for early selection and discrimination of genotypes tolerant to eucalyptus dieback and water deficit. Among the 34 evaluated characteristics, plant height, stem... Mostrar Tudo |
Palavras-Chave: |
Water deficit. |
Thesaurus Nal: |
Bioenergy; Plant breeding. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02775naa a2200265 a 4500 001 2082816 005 2017-12-18 008 2017 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1016/j.indcrop.2017.05.032$2DOI 100 1 $aCORRÊA, T. R. 245 $aPhenotypic markers in early selection for tolerance to dieback in Eucalyptus.$h[electronic resource] 260 $c2017 520 $aEucalyptus dieback is a physiological disorder characterized by lesions on the apex of the branches and the death of the shoot apex. Some clones are considered tolerant to this disorder, although, up to now, there are no reports on the use of phenotypic markers for selecting tolerant material. The use of phenotypic markers may contribute to an efficient selection, where the estimation of genetic parameters of the candidate markers are essential to knowledge of the population structure, the genetic potential and effectiveness of markers as selection criteria. In this study, we estimated the genetic parameters of morphological and nutritional markers in 13 commercial eucalyptus clones aiming early selection of tolerant genotypes to eucalyptus dieback. Estimates of the genetic parameters of all characteristics were obtained by the mixed model methodology, REML (Restricted Maximum Likelihood)/BLUP (Best Linear Unbiased Prediction) procedure. Water deficit, one of the factors that promote this disorder, was simulated in eucalyptus cuttings conducted in a greenhouse. Simulated water stress was carried out for 12 weeks by applying polyethylene glycol at different concentrations and by limiting water applied to seedlings. In order to select the most promising markers, 34 morphological and nutritional variables were evaluated for early selection and discrimination of genotypes tolerant to eucalyptus dieback and water deficit. Among the 34 evaluated characteristics, plant height, stem diameter, height increment, leaf area, N, K and B, exhibited significant heritability and high accuracy (greater than 70%). Promising phenotypic markers were identified for early selection of genotypes tolerant to water deficit and eucalyptus dieback. Tolerant clones were pooled and correctly discriminated from the susceptible ones under stressful conditions by the use of seven phenotypic markers in REML/BLUP analysis, selection index ranking and graphic dispersion analysis. 650 $aBioenergy 650 $aPlant breeding 653 $aWater deficit 700 1 $aPICOLI, E. A. de T. 700 1 $aSOUZA, G. A. de 700 1 $aCONDÉ, S. A. 700 1 $aSILVA, N. M. 700 1 $aLOPES-MATTOS, K. L. B. 700 1 $aRESENDE, M. D. V. de 700 1 $aZAUZA, E. A. V. 700 1 $aODA, S. 773 $tIndustrial Crops and Products$gv. 107, p. 130-138, 2017.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
26/01/1996 |
Data da última atualização: |
18/12/2018 |
Autoria: |
OLIVEIRA, E. A.; BIANCHINI, C. |
Título: |
Diagnostico e recomendacoes para a cultura do aspargo na zona produtora da regiao sudeste do Rio Grande do Sul. |
Ano de publicação: |
1982 |
Fonte/Imprenta: |
Pelotas: EMBRAPA-UEPAE de Cascata, 1982. |
Páginas: |
43p. |
Série: |
(EMBRAPA-UEPAE de Cascata. Documentos, 13). |
Idioma: |
Português |
Conteúdo: |
Nos ultimos anos, passaram a ser constatada acentuadas quedas na producao de algumas lavouras de aspargo, devido, principalmente, ao apodrecimento generalizado do sistema radicular. Ate entao, o baixo rendimento medio das lavouras, oscilando entre 1.500 e 2.000 kg/ha, era atribuido tanto a causas tecnicas, quanto economicas. Entre as primeiras, encontravam-se a utilizacao de cultivares e de mudas de qualidade inferior, periodos prolongados de colheita e descuidados na realizacao dos trabalhos culturais. As causas economicas referiam-se a organizacao da lvoura, geralmente localizada em pequenas areas, e a flutuacoes de preco, repercutindo na comercializacao. Tornou-se necessaria, entao, uma analise da situacao existente, para uma melhor definicao das ...linhas de pesquisa e de difusao de tecnologia a serem seguidas pela EMBRAPA, atraves da UEPAE de Cascata, e da EMATER/RS, respectivamente. |
Palavras-Chave: |
Asparagus officinalis L; Aspargus; Aspargus officinalis; Aspectos gerais; Brasil; Cultivation; Cultivo; Disease; Doen?a; General aspects; Pest; Plantation; Pr tica cultural; Rio Grande do Sul; Seedling; Trato cultural. |
Thesagro: |
Aspargo; Doença; Muda; Plantio; Praga; Solo. |
Thesaurus NAL: |
soil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01983nam a2200421 a 4500 001 1743139 005 2018-12-18 008 1982 bl uuuu u0uu1 u #d 100 1 $aOLIVEIRA, E. A. 245 $aDiagnostico e recomendacoes para a cultura do aspargo na zona produtora da regiao sudeste do Rio Grande do Sul. 260 $aPelotas: EMBRAPA-UEPAE de Cascata$c1982 300 $a43p. 490 $a(EMBRAPA-UEPAE de Cascata. Documentos, 13). 520 $aNos ultimos anos, passaram a ser constatada acentuadas quedas na producao de algumas lavouras de aspargo, devido, principalmente, ao apodrecimento generalizado do sistema radicular. Ate entao, o baixo rendimento medio das lavouras, oscilando entre 1.500 e 2.000 kg/ha, era atribuido tanto a causas tecnicas, quanto economicas. Entre as primeiras, encontravam-se a utilizacao de cultivares e de mudas de qualidade inferior, periodos prolongados de colheita e descuidados na realizacao dos trabalhos culturais. As causas economicas referiam-se a organizacao da lvoura, geralmente localizada em pequenas areas, e a flutuacoes de preco, repercutindo na comercializacao. Tornou-se necessaria, entao, uma analise da situacao existente, para uma melhor definicao das ...linhas de pesquisa e de difusao de tecnologia a serem seguidas pela EMBRAPA, atraves da UEPAE de Cascata, e da EMATER/RS, respectivamente. 650 $asoil 650 $aAspargo 650 $aDoença 650 $aMuda 650 $aPlantio 650 $aPraga 650 $aSolo 653 $aAsparagus officinalis L 653 $aAspargus 653 $aAspargus officinalis 653 $aAspectos gerais 653 $aBrasil 653 $aCultivation 653 $aCultivo 653 $aDisease 653 $aDoen?a 653 $aGeneral aspects 653 $aPest 653 $aPlantation 653 $aPr tica cultural 653 $aRio Grande do Sul 653 $aSeedling 653 $aTrato cultural 700 1 $aBIANCHINI, C.
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