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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Semiárido. |
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Data corrente: |
09/12/2003 |
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Data da última atualização: |
29/09/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEAO, P. C. de S.; COSTA, J. G. da. |
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Afiliação: |
PATRICIA COELHO DE SOUZA LEAO, CPATSA; JOÃO GOMES DA COSTA, CPATSA. |
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Título: |
Estimates of repeatability and path coefficients on grapes. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 3, n. 3, p. 231-236 , 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to estimate the repeatability coefficient, the minimum number of evaluations top which a trait should be subjected and the effect of the inter-relationships of five charactersn grapevine (Vitis spp.) yield, aiming at getting useful information for breeding strategies of this fruit crop. Repeatability coefficients were estimated for the follwing characters: total soluble solids (TSS); total tritable acidity (TTA); TSS/TTA ratio; berry length, diameter and weight; bunch length, width and weight, and number and yield of bunches per plant on eleven seedless grape varieties in five yield cycles (1997 and 1998) in Petrolina-PE. The repeatibility estimates were obtained by the main components methods from the correlation matrix. The simple correlation coefficients were calculated and they were partitioned into direct and indirect effects by the path analysis. The estimated repeatibility coefficients ranged from 0,4750 to 0,8372 associated to the coefficients of determination from 81.9% to 96.26%. The traits TSS, TTA and bunch length presented low repeatibility coefficients, meaning a low regularity of performance from one measurement to another. The other characters showed regularity on the repetition of the behavior of the genotypes. The results of the path analysis showed that the studied variables satisfactorily explain the character yield per plant. |
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Palavras-Chave: |
Correlação genética; Melhoramento de planta; Repetibilidade; Uva de mesa. |
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Thesagro: |
Uva; Vitis Vinifera. |
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Thesaurus Nal: |
correlation; Grapes; plant breeding. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/130458/1/ID-27605.pdf
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Marc: |
LEADER 02070naa a2200241 a 4500
001 1133683
005 2015-09-29
008 2003 bl uuuu u00u1 u #d
100 1 $aLEAO, P. C. de S.
245 $aEstimates of repeatability and path coefficients on grapes.
260 $c2003
520 $aThe objective of this study was to estimate the repeatability coefficient, the minimum number of evaluations top which a trait should be subjected and the effect of the inter-relationships of five charactersn grapevine (Vitis spp.) yield, aiming at getting useful information for breeding strategies of this fruit crop. Repeatability coefficients were estimated for the follwing characters: total soluble solids (TSS); total tritable acidity (TTA); TSS/TTA ratio; berry length, diameter and weight; bunch length, width and weight, and number and yield of bunches per plant on eleven seedless grape varieties in five yield cycles (1997 and 1998) in Petrolina-PE. The repeatibility estimates were obtained by the main components methods from the correlation matrix. The simple correlation coefficients were calculated and they were partitioned into direct and indirect effects by the path analysis. The estimated repeatibility coefficients ranged from 0,4750 to 0,8372 associated to the coefficients of determination from 81.9% to 96.26%. The traits TSS, TTA and bunch length presented low repeatibility coefficients, meaning a low regularity of performance from one measurement to another. The other characters showed regularity on the repetition of the behavior of the genotypes. The results of the path analysis showed that the studied variables satisfactorily explain the character yield per plant.
650 $acorrelation
650 $aGrapes
650 $aplant breeding
650 $aUva
650 $aVitis Vinifera
653 $aCorrelação genética
653 $aMelhoramento de planta
653 $aRepetibilidade
653 $aUva de mesa
700 1 $aCOSTA, J. G. da
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 3, n. 3, p. 231-236 , 2003.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 210 | |
| 46. |  | LEDO, A. da S.; COSTA, J. G. da. Situação atual e perspectivas da cultura do cupuaçuzeiro no estado do Acre, Amazônia Ocidental brasileira. In: SEMINÁRIO INTERNACIONAL SOBRE PIMENTA-DO-REINO E CUPUAÇU, 1., 1996, Belém, PA. Anais... Belém, PA: Embrapa Amazônia Oriental, 1997. p. 119-124. (Embrapa Amazônia Oriental. Documentos, 89).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 48. | | BARROS, R. P. de; REIS, L. S.; COSTA, J. G. da; GUZZO, E. C. Bioecologia da Traça-do-Tomateiro: Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) na região agreste de Alagoas, Nordeste do Brasil. In: ENCONTRO CIENTÍFICO E CULTURAL E ALAGOAS, 5., 2015, Maceió. Anais... Maceió: UFAL, 2015| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| Registros recuperados : 210 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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