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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
22/05/2009 |
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Data da última atualização: |
07/08/2013 |
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Autoria: |
SILVA, M. R. da; PEREIRA, D. G.; SEDIYAMA, T.; CRUZ, C. D.; REIS, M. S.; GOMES, J. L. L.; TEIXEIRA, R. de C. |
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Afiliação: |
MARILDA RAMOS DA SILVA, UESB; DERVAL GOMES PEREIRA, UESB; TUNEO SEDIYAMA, UFV; COSME DAMIÃO CRUZ, UFV; MÚCIO SILVA REIS, UFV; JOSÉ LUIZ LOPES GOMES, UFV; RITA DE CÁSSIA TEIXEIRA, UFV. |
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Título: |
Estimates of repeatability in the evaluation of resistance of soybean genotypes to powdery mildew. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 6, n. 2, p. 160-166, June 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean is worldwide a crop of great importance, however, with its expansion, diseases causing great yield loss such as the powdery mildew surge (Erisyphe diffusa U. Braun & S. Takam). Objective of the present study was to estimate the ideal number of evaluations of the resistance of soybean genotypes to powdery mildew by means of repeatability studies with the traits: ILA (infection of the leaf area), ILS (infection of the leaf blade surface) and ILU (infection of the leaf underside), using the treatments no control - NC, partial control - PC (fungicide 80% sulfur at ILA >= 40%) and total control - TC (presence of symptoms). Only trait ILA presented estimates of repeatability (ANOVA and principal components), with 85-90% of stability in 3 or 4 measurements (PC and NC methods). These results and the high values found for R2 indicate that selection based on this parameter is possible. |
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Palavras-Chave: |
Repetibilidade; Variância fenotípica. |
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Thesagro: |
Agricultura; Biotecnologia; Genética; Oídio; Soja. |
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Thesaurus Nal: |
Agriculture; Biotechnology; Genetics. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01771naa a2200313 a 4500
001 1048968
005 2013-08-07
008 2006 bl uuuu u00u1 u #d
100 1 $aSILVA, M. R. da
245 $aEstimates of repeatability in the evaluation of resistance of soybean genotypes to powdery mildew.
260 $c2006
520 $aSoybean is worldwide a crop of great importance, however, with its expansion, diseases causing great yield loss such as the powdery mildew surge (Erisyphe diffusa U. Braun & S. Takam). Objective of the present study was to estimate the ideal number of evaluations of the resistance of soybean genotypes to powdery mildew by means of repeatability studies with the traits: ILA (infection of the leaf area), ILS (infection of the leaf blade surface) and ILU (infection of the leaf underside), using the treatments no control - NC, partial control - PC (fungicide 80% sulfur at ILA >= 40%) and total control - TC (presence of symptoms). Only trait ILA presented estimates of repeatability (ANOVA and principal components), with 85-90% of stability in 3 or 4 measurements (PC and NC methods). These results and the high values found for R2 indicate that selection based on this parameter is possible.
650 $aAgriculture
650 $aBiotechnology
650 $aGenetics
650 $aAgricultura
650 $aBiotecnologia
650 $aGenética
650 $aOídio
650 $aSoja
653 $aRepetibilidade
653 $aVariância fenotípica
700 1 $aPEREIRA, D. G.
700 1 $aSEDIYAMA, T.
700 1 $aCRUZ, C. D.
700 1 $aREIS, M. S.
700 1 $aGOMES, J. L. L.
700 1 $aTEIXEIRA, R. de C.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 6, n. 2, p. 160-166, June 2006.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
05/02/2015 |
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Data da última atualização: |
18/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BARTZ, M. L. C.; BROWN, G. G.; ORSO, R.; MAFRA, A. L.; BARRETA, D. |
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Afiliação: |
MARIE LUISE CAROLINA BARTZ, UNIVERSIDADE POSITIVO; GEORGE GARDNER BROWN, CNPF; RENATO ORSO, UDESC; ALVARO LUIZ MAFRA, UDESC; DILMAR BARRETA, UDESC. |
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Título: |
The influence of land use systems on soil and surface litter fauna in the western region of Santa Catarina. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista Ciência Agronômica, v. 45, n. 5 esp., p. 880-887, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the abundance of soil and surface litter fauna in the western region of Santa Catarina state, southern Brazil, in the following land use systems (LUS): no-tillage crops (NT), integrated crop-livestock (ICL), pasture (PA), Eucalyptus plantation (EP) and native forest fragments (NF). Sampling was done in three counties in the western region of Santa Catarina: Xanxerê, Chapecó and São Miguel do Oeste, in two seasons (winter and summer). The evaluation of soil/litter fauna in each LUS was performed by installing nine “pitfall traps” per sampling grid (3 x 3). The counties are true replicas. The soil for the chemical attributes was collected at the same sampling points for soil fauna. Altogether, 17 taxa were identified in the five LUS. The presence of groups of fauna was influenced by the type of soil management used. The LUS NF and EP provide better soil conditions for the development of a higher diversity of soil fauna groups compared to other LUS, which showed varying degrees of human intervention, regardless of the sampling season (winter or summer). However, annual crop systems NT and ICL groups showed greater richness and total abundance when compared to the perennial systems (EP and PA). Principal component analysis is an important tool in the study of biological indicators of sustainability because it allows use of soil attributes (chemical and physical) as explanatory environmental variables, which helps in the interpretation of ecological data. MenosThe aim of this study was to evaluate the abundance of soil and surface litter fauna in the western region of Santa Catarina state, southern Brazil, in the following land use systems (LUS): no-tillage crops (NT), integrated crop-livestock (ICL), pasture (PA), Eucalyptus plantation (EP) and native forest fragments (NF). Sampling was done in three counties in the western region of Santa Catarina: Xanxerê, Chapecó and São Miguel do Oeste, in two seasons (winter and summer). The evaluation of soil/litter fauna in each LUS was performed by installing nine “pitfall traps” per sampling grid (3 x 3). The counties are true replicas. The soil for the chemical attributes was collected at the same sampling points for soil fauna. Altogether, 17 taxa were identified in the five LUS. The presence of groups of fauna was influenced by the type of soil management used. The LUS NF and EP provide better soil conditions for the development of a higher diversity of soil fauna groups compared to other LUS, which showed varying degrees of human intervention, regardless of the sampling season (winter or summer). However, annual crop systems NT and ICL groups showed greater richness and total abundance when compared to the perennial systems (EP and PA). Principal component analysis is an important tool in the study of biological indicators of sustainability because it allows use of soil attributes (chemical and physical) as explanatory environmental variables, which helps in the interpretation of eco... Mostrar Tudo |
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Palavras-Chave: |
Sistema de uso do solo; Sustentabilidade. |
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Thesagro: |
Biodiversidade; Biologia do Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/117305/1/2014-API-Brown-InfluenceLand.pdf
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Marc: |
LEADER 02187naa a2200217 a 4500
001 2007809
005 2015-02-18
008 2014 bl uuuu u00u1 u #d
100 1 $aBARTZ, M. L. C.
245 $aThe influence of land use systems on soil and surface litter fauna in the western region of Santa Catarina.$h[electronic resource]
260 $c2014
520 $aThe aim of this study was to evaluate the abundance of soil and surface litter fauna in the western region of Santa Catarina state, southern Brazil, in the following land use systems (LUS): no-tillage crops (NT), integrated crop-livestock (ICL), pasture (PA), Eucalyptus plantation (EP) and native forest fragments (NF). Sampling was done in three counties in the western region of Santa Catarina: Xanxerê, Chapecó and São Miguel do Oeste, in two seasons (winter and summer). The evaluation of soil/litter fauna in each LUS was performed by installing nine “pitfall traps” per sampling grid (3 x 3). The counties are true replicas. The soil for the chemical attributes was collected at the same sampling points for soil fauna. Altogether, 17 taxa were identified in the five LUS. The presence of groups of fauna was influenced by the type of soil management used. The LUS NF and EP provide better soil conditions for the development of a higher diversity of soil fauna groups compared to other LUS, which showed varying degrees of human intervention, regardless of the sampling season (winter or summer). However, annual crop systems NT and ICL groups showed greater richness and total abundance when compared to the perennial systems (EP and PA). Principal component analysis is an important tool in the study of biological indicators of sustainability because it allows use of soil attributes (chemical and physical) as explanatory environmental variables, which helps in the interpretation of ecological data.
650 $aBiodiversidade
650 $aBiologia do Solo
653 $aSistema de uso do solo
653 $aSustentabilidade
700 1 $aBROWN, G. G.
700 1 $aORSO, R.
700 1 $aMAFRA, A. L.
700 1 $aBARRETA, D.
773 $tRevista Ciência Agronômica$gv. 45, n. 5 esp., p. 880-887, 2014.
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Embrapa Florestas (CNPF) |
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