| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Milho e Sorgo; Embrapa Pesca e Aquicultura. |
|
Data corrente: |
10/01/2018 |
|
Data da última atualização: |
23/05/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
RIOS, S. de A.; CUNHA, R. N. V. da; LOPES, R.; SILVA, E. B. da; ROCHA, R. N. C. da; LIMA, W. A. A. de. |
|
Afiliação: |
SARA DE ALMEIDA RIOS, CNPMS; RAIMUNDO NONATO VIEIRA DA CUNHA, CPAA; RICARDO LOPES, CPAA; EDSON BARCELOS DA SILVA, CPAA; RAIMUNDO NONATO CARVALHO DA ROCHA, CPAA; WANDERLEI ANTONIO ALVES DE LIMA, CPAC. |
|
Título: |
Correlation and Path analysis for yield components in Dura oil palm germplasm. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Industrial Crops and Products, v. 112, p. 724-733, Feb. 2018. |
|
DOI: |
10.1016/j.indcrop.2017.12.054 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The purpose of this study was to evaluate linear correlations and their direct and indirect effects on the characters of production for oil palm germplasm. It were evaluated 34 accessions of the Germplasm of Oil Palm from Embrapa considering 37 variables among vegetative characters, bunch yield and bunch components. Data were collected, fortnightly, during consecutive eight years, from fourth to tenth year after planting. It was estimated the matrix of phenotypic and genotypic correlations, and its decomposition into direct and indirect effects through path coefficient analysis. Results showed that Total Bunch Weight at young (PTCFJ) and adult (PTCFA) phase, even as number of bunches at adult phase (NCFA), total bunch weight (PTC), bunch weight (Pcacho), bunch peduncle (PPED), fruit to bunch ratio (RFC), pulp to fruit ratio (RPF), oil percentage in wet pulp (POP), and laboratory oil extraction rate (TEL) had positive and significant correlation (p <= 5 0,05) with oil production per plant at adult phase (POFA): 0.55, 0.72, 0.35, 0,72, 0.49, 0.49, 0.37, 0.53, 0.34 and 0.69, respectively. As expected, there was a negative correlation (p <= 0.05) between POFA and the variables almond to fruit ratio (PerAM) (-0.47) and endocarp to fruit ratio (PEF) (-0.45). The path coefficient analysis showed that despite high positive and significant correlations between POFA and many variables evaluated, for few of these correlations was verified a relationship of cause and effect. Variables with significant correlations, and with high direct effect on POFA were NCFA (0,13 direct effect), PTCFA (0,53 direct effect), RFC (0,11 direct effect), RPF (0,10 direct effect), PEF (-011), POP (0,13 direct effect) and TEL (0,35). The variables with higher direct and/or indirect effect to increase the fresh fruit bunch production were PTCFJ and PTCFA. The latter is the most important variable for use in breeding programs and evaluation of the oil palm as it has positive and significant correlations and direct and/or indirect effect in the correlation value for the increase for both bunches production as well as oil palm production. MenosThe purpose of this study was to evaluate linear correlations and their direct and indirect effects on the characters of production for oil palm germplasm. It were evaluated 34 accessions of the Germplasm of Oil Palm from Embrapa considering 37 variables among vegetative characters, bunch yield and bunch components. Data were collected, fortnightly, during consecutive eight years, from fourth to tenth year after planting. It was estimated the matrix of phenotypic and genotypic correlations, and its decomposition into direct and indirect effects through path coefficient analysis. Results showed that Total Bunch Weight at young (PTCFJ) and adult (PTCFA) phase, even as number of bunches at adult phase (NCFA), total bunch weight (PTC), bunch weight (Pcacho), bunch peduncle (PPED), fruit to bunch ratio (RFC), pulp to fruit ratio (RPF), oil percentage in wet pulp (POP), and laboratory oil extraction rate (TEL) had positive and significant correlation (p <= 5 0,05) with oil production per plant at adult phase (POFA): 0.55, 0.72, 0.35, 0,72, 0.49, 0.49, 0.37, 0.53, 0.34 and 0.69, respectively. As expected, there was a negative correlation (p <= 0.05) between POFA and the variables almond to fruit ratio (PerAM) (-0.47) and endocarp to fruit ratio (PEF) (-0.45). The path coefficient analysis showed that despite high positive and significant correlations between POFA and many variables evaluated, for few of these correlations was verified a relationship of cause and effect. Variables w... Mostrar Tudo |
|
Palavras-Chave: |
Direct and indirect effects; Oil yield; Palma de óleo. |
|
Thesagro: |
Elaeis Guineensis; Germoplasma. |
|
Thesaurus Nal: |
correlated responses. |
|
Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02942naa a2200265 a 4500
001 2091885
005 2018-05-23
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.indcrop.2017.12.054$2DOI
100 1 $aRIOS, S. de A.
245 $aCorrelation and Path analysis for yield components in Dura oil palm germplasm.$h[electronic resource]
260 $c2018
520 $aThe purpose of this study was to evaluate linear correlations and their direct and indirect effects on the characters of production for oil palm germplasm. It were evaluated 34 accessions of the Germplasm of Oil Palm from Embrapa considering 37 variables among vegetative characters, bunch yield and bunch components. Data were collected, fortnightly, during consecutive eight years, from fourth to tenth year after planting. It was estimated the matrix of phenotypic and genotypic correlations, and its decomposition into direct and indirect effects through path coefficient analysis. Results showed that Total Bunch Weight at young (PTCFJ) and adult (PTCFA) phase, even as number of bunches at adult phase (NCFA), total bunch weight (PTC), bunch weight (Pcacho), bunch peduncle (PPED), fruit to bunch ratio (RFC), pulp to fruit ratio (RPF), oil percentage in wet pulp (POP), and laboratory oil extraction rate (TEL) had positive and significant correlation (p <= 5 0,05) with oil production per plant at adult phase (POFA): 0.55, 0.72, 0.35, 0,72, 0.49, 0.49, 0.37, 0.53, 0.34 and 0.69, respectively. As expected, there was a negative correlation (p <= 0.05) between POFA and the variables almond to fruit ratio (PerAM) (-0.47) and endocarp to fruit ratio (PEF) (-0.45). The path coefficient analysis showed that despite high positive and significant correlations between POFA and many variables evaluated, for few of these correlations was verified a relationship of cause and effect. Variables with significant correlations, and with high direct effect on POFA were NCFA (0,13 direct effect), PTCFA (0,53 direct effect), RFC (0,11 direct effect), RPF (0,10 direct effect), PEF (-011), POP (0,13 direct effect) and TEL (0,35). The variables with higher direct and/or indirect effect to increase the fresh fruit bunch production were PTCFJ and PTCFA. The latter is the most important variable for use in breeding programs and evaluation of the oil palm as it has positive and significant correlations and direct and/or indirect effect in the correlation value for the increase for both bunches production as well as oil palm production.
650 $acorrelated responses
650 $aElaeis Guineensis
650 $aGermoplasma
653 $aDirect and indirect effects
653 $aOil yield
653 $aPalma de óleo
700 1 $aCUNHA, R. N. V. da
700 1 $aLOPES, R.
700 1 $aSILVA, E. B. da
700 1 $aROCHA, R. N. C. da
700 1 $aLIMA, W. A. A. de
773 $tIndustrial Crops and Products$gv. 112, p. 724-733, Feb. 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
16/11/2015 |
|
Data da última atualização: |
15/02/2016 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 1 |
|
Autoria: |
NICOLI, A.; COSTA, R. V. da; COTA, L. V.; SILVA, D. D. da; ZAMBOLIM, L.; LANZA, F. E.; GUIMARAES, D. P.; LANDAU, E. C. |
|
Afiliação: |
RODRIGO VERAS DA COSTA, CNPMS; LUCIANO VIANA COTA, CNPMS; DAGMA DIONISIA DA SILVA, CNPMS; DANIEL PEREIRA GUIMARAES, CNPMS; ELENA CHARLOTTE LANDAU, CNPMS. |
|
Título: |
Validação de escala diagramática para quantificação da severidade da antracnose do colmo do milho. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Ciência Rural, Santa Maria, v. 45, n. 10, p. 1720-1726, out. 2015. |
|
DOI: |
http://dx.doi.org/10.1590/0103-8478cr20141510 |
|
Idioma: |
Português |
|
Conteúdo: |
Objetivou-se propor e validar uma escala diagramática para quantificar a antracnose do colmo em milho. A severidade da antracnose foi estimada por dez avaliadores sem o uso de escala em 139 entrenós, e os mesmos avaliadores avaliaram os entrenós usando uma escala publicada anteriormente na literatura (primeira escala) e uma nova escala proposta. Com o uso da escala proposta, todas as variáveis foram significativamente diferentes em relação à primeira escala, e os valores foram mais próximos de uma medição acurada (r=0,97, Cb=0.98, u=0.09, υ=1.06, ρc=0.96). Os maiores desvios do erro foram observados quando os avaliadores atribuíram notas sem o uso de escalas e com a primeira escala, com vários exemplos de erros maiores do que 30% do valor real. Com a escala proposta, poucos erros acima de 15% do valor real foram encontrados, e a maioria das notas dos avaliadores não ultrapassou, para mais ou para menos, 10% do valor real. Uma maior confiabilidade na estimativa da severidade da doença foi obtida com o uso da escala proposta, com a qual 100% das comparações resultaram em um R2>0,90. A nova escala diagramática proposta no presente trabalho melhorou a acurácia, precisão e confiabilidade das estimativas da severidade da antracnose do colmo em milho. |
|
Palavras-Chave: |
Quantificação. |
|
Thesagro: |
Antracnose; Colletotrichum graminicola; Doença de planta; Podridão do colmo; Zea mays. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/133075/1/Validacao-escala.pdf
|
|
Marc: |
LEADER 02185naa a2200289 a 4500
001 2028639
005 2016-02-15
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/0103-8478cr20141510$2DOI
100 1 $aNICOLI, A.
245 $aValidação de escala diagramática para quantificação da severidade da antracnose do colmo do milho.$h[electronic resource]
260 $c2015
520 $aObjetivou-se propor e validar uma escala diagramática para quantificar a antracnose do colmo em milho. A severidade da antracnose foi estimada por dez avaliadores sem o uso de escala em 139 entrenós, e os mesmos avaliadores avaliaram os entrenós usando uma escala publicada anteriormente na literatura (primeira escala) e uma nova escala proposta. Com o uso da escala proposta, todas as variáveis foram significativamente diferentes em relação à primeira escala, e os valores foram mais próximos de uma medição acurada (r=0,97, Cb=0.98, u=0.09, υ=1.06, ρc=0.96). Os maiores desvios do erro foram observados quando os avaliadores atribuíram notas sem o uso de escalas e com a primeira escala, com vários exemplos de erros maiores do que 30% do valor real. Com a escala proposta, poucos erros acima de 15% do valor real foram encontrados, e a maioria das notas dos avaliadores não ultrapassou, para mais ou para menos, 10% do valor real. Uma maior confiabilidade na estimativa da severidade da doença foi obtida com o uso da escala proposta, com a qual 100% das comparações resultaram em um R2>0,90. A nova escala diagramática proposta no presente trabalho melhorou a acurácia, precisão e confiabilidade das estimativas da severidade da antracnose do colmo em milho.
650 $aAntracnose
650 $aColletotrichum graminicola
650 $aDoença de planta
650 $aPodridão do colmo
650 $aZea mays
653 $aQuantificação
700 1 $aCOSTA, R. V. da
700 1 $aCOTA, L. V.
700 1 $aSILVA, D. D. da
700 1 $aZAMBOLIM, L.
700 1 $aLANZA, F. E.
700 1 $aGUIMARAES, D. P.
700 1 $aLANDAU, E. C.
773 $tCiência Rural, Santa Maria$gv. 45, n. 10, p. 1720-1726, out. 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
