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| Registros recuperados : 2 | |
| Registros recuperados : 2 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/11/2003 |
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Data da última atualização: |
20/04/2018 |
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Autoria: |
CARVALHO, C. G. P. de; OLIVEIRA, M. F. de; ARIAS, C. A. A.; CASTIGLIONI, V. B. R.; VIEIRA, O. V.; TOLEDO, J. F. F. de. |
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Afiliação: |
CLAUDIO GUILHERME PORTELA DE CARVALHO, CNPSO; MARCELO FERNANDES DE OLIVEIRA, CNPSO; CARLOS ALBERTO ARRABAL ARIAS, CNPSO; VANIA BEATRIZ RODRIGUES CASTIGLIONI, SDI; OSVALDO VASCONCELLOS VIEIRA, CNPT; JOSÉ FRANCISCO FERRAZ DE TOLEDO, CNPSo. |
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Título: |
Categorizing coefficients of variation in sunflower trials. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 3, n. 1, p. 69-76, mar. 2003. |
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DOI: |
10.12702/1984-7033.v03n01a10 |
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Idioma: |
Inglês |
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Conteúdo: |
This study was carried out to categorize coefficients of variation (CV?s) associated with important traits of routine use in the sunflower breeding programs. Separate categories were obtained for the August/September and February/March sowings. Data were used from the intermediate and final sunflower experiments carried out by Embrapa Soybean and other collaborator institutions of the Network of Official Sunflower Trials. Taking into account the mean and the standard deviation of the CV?s obtained from the analyses of variance of the experiments, they were fitted into the low, medium, high and very high categories. An additional classification was made using the median and pseudo-sigma, in place of the mean and standard deviation, respectively. In this study it was ascertained that the CV?s categorization depended on the trait studied. Sowing date effects were more pronounced for seed and oil yield and plant height. For all assessed traits in February/March, the methodologies adopted were similar (regardless of the CV?s distribution) and satisfactory to assess the experimental accuracy of the trials. In the August/September trials there was good agreement between the results of the methodologies adopted and that of Gomes (1985) for seed and oil yield. For the other traits, the former methodologies were shown to be more adequate. The proposed CV?s categorizations for the sunflower traits use as maximum acceptable limits the values of 23.5% (August/September sowing) and 31.5% (February/ March sowing) for seed and oil yield, 6.0% for oil content (August/September and February/March) and plant height (August/September), 9.5% for plant height (February/March) and 4.5% for flowering and physiological maturity (August/September and February/March. MenosThis study was carried out to categorize coefficients of variation (CV?s) associated with important traits of routine use in the sunflower breeding programs. Separate categories were obtained for the August/September and February/March sowings. Data were used from the intermediate and final sunflower experiments carried out by Embrapa Soybean and other collaborator institutions of the Network of Official Sunflower Trials. Taking into account the mean and the standard deviation of the CV?s obtained from the analyses of variance of the experiments, they were fitted into the low, medium, high and very high categories. An additional classification was made using the median and pseudo-sigma, in place of the mean and standard deviation, respectively. In this study it was ascertained that the CV?s categorization depended on the trait studied. Sowing date effects were more pronounced for seed and oil yield and plant height. For all assessed traits in February/March, the methodologies adopted were similar (regardless of the CV?s distribution) and satisfactory to assess the experimental accuracy of the trials. In the August/September trials there was good agreement between the results of the methodologies adopted and that of Gomes (1985) for seed and oil yield. For the other traits, the former methodologies were shown to be more adequate. The proposed CV?s categorizations for the sunflower traits use as maximum acceptable limits the values of 23.5% (August/September sowing) and 31.5% ... Mostrar Tudo |
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Palavras-Chave: |
Experimental accuracy; Sunflower. |
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Thesagro: |
Girassol; Helianthus Annuus. |
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Thesaurus NAL: |
yield components. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/175739/1/c8128f42-9baa-9413.pdf
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Marc: |
LEADER 02521naa a2200253 a 4500
001 1460270
005 2018-04-20
008 2003 bl uuuu u00u1 u #d
024 7 $a10.12702/1984-7033.v03n01a10$2DOI
100 1 $aCARVALHO, C. G. P. de
245 $aCategorizing coefficients of variation in sunflower trials.
260 $c2003
520 $aThis study was carried out to categorize coefficients of variation (CV?s) associated with important traits of routine use in the sunflower breeding programs. Separate categories were obtained for the August/September and February/March sowings. Data were used from the intermediate and final sunflower experiments carried out by Embrapa Soybean and other collaborator institutions of the Network of Official Sunflower Trials. Taking into account the mean and the standard deviation of the CV?s obtained from the analyses of variance of the experiments, they were fitted into the low, medium, high and very high categories. An additional classification was made using the median and pseudo-sigma, in place of the mean and standard deviation, respectively. In this study it was ascertained that the CV?s categorization depended on the trait studied. Sowing date effects were more pronounced for seed and oil yield and plant height. For all assessed traits in February/March, the methodologies adopted were similar (regardless of the CV?s distribution) and satisfactory to assess the experimental accuracy of the trials. In the August/September trials there was good agreement between the results of the methodologies adopted and that of Gomes (1985) for seed and oil yield. For the other traits, the former methodologies were shown to be more adequate. The proposed CV?s categorizations for the sunflower traits use as maximum acceptable limits the values of 23.5% (August/September sowing) and 31.5% (February/ March sowing) for seed and oil yield, 6.0% for oil content (August/September and February/March) and plant height (August/September), 9.5% for plant height (February/March) and 4.5% for flowering and physiological maturity (August/September and February/March.
650 $ayield components
650 $aGirassol
650 $aHelianthus Annuus
653 $aExperimental accuracy
653 $aSunflower
700 1 $aOLIVEIRA, M. F. de
700 1 $aARIAS, C. A. A.
700 1 $aCASTIGLIONI, V. B. R.
700 1 $aVIEIRA, O. V.
700 1 $aTOLEDO, J. F. F. de
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 3, n. 1, p. 69-76, mar. 2003.
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Registro original: |
Embrapa Soja (CNPSO) |
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