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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
27/04/2012 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; DIAS, N. L. P.; DANTAS, J. L. L. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; NAGELA LAZARE PEREIRA DIAS, UFRB; JORGE LUIZ LOYOLA DANTAS, CNPMF. |
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Título: |
Selection of morpho-agronomic descriptors for characterization of papaya cultivars. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Euphytica, v. 185, n. 2, p. 253-265, 2012. |
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DOI: |
10.1007/s10681-011-0565-0 |
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Idioma: |
Inglês |
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Conteúdo: |
This study was conducted to define a list of sufficient minimum descriptors to distinguish between papaya genotypes quickly and precisely. To this end, 30 quantitative and 21 multi-category descriptors related to plant characteristics, such as leaves, flowers, fruit and seeds were evaluated in 27 genotypes of papaya, including crops, local varieties and improved lines. The quantitative descriptors were subjected to principal components analyses using the Singh and direct selection methods, whereas a correlation analysis was conducted for the qualitative descriptors. Eighteen and fifteen quantitative descriptors were discarded by the Singh and direct selection methods, respectively. However, considering the simultaneous analyses of these methodologies, 60% of the descriptors were selected to maximize the total variation of the genotypes. Six of the multi-category descriptors were monomorphic, and two were highly correlated with other characteristics and were discarded. The minimum descriptors that were selected had high discrimination potentials when they were analyzed together. Thus, for the purposes of the protection of varieties and the classification of the genotypes of papaya, there were found to be 18 quantitative and 13 multi-category minimum descriptors that contributed significantly to the total variation and possessed low correlation with each other. The elimination of descriptors did not entail a loss of information. Those descriptors that contributed most significantly to the first three principal components were the stem diameters, fruit lengths and widths, inflorescence peduncle lengths, thickness of fruit skin, leaf widths, dry and fresh seed weights and ratio between fruit lengths and widths and between total soluble solids and total titratable acidities. MenosThis study was conducted to define a list of sufficient minimum descriptors to distinguish between papaya genotypes quickly and precisely. To this end, 30 quantitative and 21 multi-category descriptors related to plant characteristics, such as leaves, flowers, fruit and seeds were evaluated in 27 genotypes of papaya, including crops, local varieties and improved lines. The quantitative descriptors were subjected to principal components analyses using the Singh and direct selection methods, whereas a correlation analysis was conducted for the qualitative descriptors. Eighteen and fifteen quantitative descriptors were discarded by the Singh and direct selection methods, respectively. However, considering the simultaneous analyses of these methodologies, 60% of the descriptors were selected to maximize the total variation of the genotypes. Six of the multi-category descriptors were monomorphic, and two were highly correlated with other characteristics and were discarded. The minimum descriptors that were selected had high discrimination potentials when they were analyzed together. Thus, for the purposes of the protection of varieties and the classification of the genotypes of papaya, there were found to be 18 quantitative and 13 multi-category minimum descriptors that contributed significantly to the total variation and possessed low correlation with each other. The elimination of descriptors did not entail a loss of information. Those descriptors that contributed most signific... Mostrar Tudo |
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Palavras-Chave: |
Carica papaya L; Cultivar protection. |
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Thesaurus Nal: |
multivariate analysis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02394naa a2200193 a 4500
001 1923314
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008 2012 bl uuuu u00u1 u #d
024 7 $a10.1007/s10681-011-0565-0$2DOI
100 1 $aOLIVEIRA, E. J. de
245 $aSelection of morpho-agronomic descriptors for characterization of papaya cultivars.$h[electronic resource]
260 $c2012
520 $aThis study was conducted to define a list of sufficient minimum descriptors to distinguish between papaya genotypes quickly and precisely. To this end, 30 quantitative and 21 multi-category descriptors related to plant characteristics, such as leaves, flowers, fruit and seeds were evaluated in 27 genotypes of papaya, including crops, local varieties and improved lines. The quantitative descriptors were subjected to principal components analyses using the Singh and direct selection methods, whereas a correlation analysis was conducted for the qualitative descriptors. Eighteen and fifteen quantitative descriptors were discarded by the Singh and direct selection methods, respectively. However, considering the simultaneous analyses of these methodologies, 60% of the descriptors were selected to maximize the total variation of the genotypes. Six of the multi-category descriptors were monomorphic, and two were highly correlated with other characteristics and were discarded. The minimum descriptors that were selected had high discrimination potentials when they were analyzed together. Thus, for the purposes of the protection of varieties and the classification of the genotypes of papaya, there were found to be 18 quantitative and 13 multi-category minimum descriptors that contributed significantly to the total variation and possessed low correlation with each other. The elimination of descriptors did not entail a loss of information. Those descriptors that contributed most significantly to the first three principal components were the stem diameters, fruit lengths and widths, inflorescence peduncle lengths, thickness of fruit skin, leaf widths, dry and fresh seed weights and ratio between fruit lengths and widths and between total soluble solids and total titratable acidities.
650 $amultivariate analysis
653 $aCarica papaya L
653 $aCultivar protection
700 1 $aDIAS, N. L. P.
700 1 $aDANTAS, J. L. L.
773 $tEuphytica$gv. 185, n. 2, p. 253-265, 2012.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/02/2009 |
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Data da última atualização: |
06/03/2013 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
ROCHA, F. E. de C.; ALBUQUERQUE, F. J. B. de; MARCELINO, M. Q. dos S.; DIAS, M. R. |
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Afiliação: |
Francisco Eduardo de Castro Rocha, CPAC; Francisco José Batista de Albuquerque; Maria Quitéria dos Santos Marcelino; Mardonio Rique Dias. |
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Título: |
Aplicações da Teoria da Ação Planejada: uma possibilidade para estudos comportamentais com agricultores familiares. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2008. |
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Série: |
(Embrapa Cerrados. Documentos, 212). |
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Idioma: |
Português |
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Palavras-Chave: |
Psicologia social; Social psychology. |
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Thesagro: |
Agricultura Familiar. |
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Thesaurus NAL: |
family farms. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2010/30281/1/doc-212.pdf
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Marc: |
LEADER 00644nam a2200193 a 4500
001 1571912
005 2013-03-06
008 2008 bl uuuu 00u1 u #d
100 1 $aROCHA, F. E. de C.
245 $aAplicações da Teoria da Ação Planejada$buma possibilidade para estudos comportamentais com agricultores familiares.
260 $aPlanaltina, DF: Embrapa Cerrados$c2008
490 $a(Embrapa Cerrados. Documentos, 212).
650 $afamily farms
650 $aAgricultura Familiar
653 $aPsicologia social
653 $aSocial psychology
700 1 $aALBUQUERQUE, F. J. B. de
700 1 $aMARCELINO, M. Q. dos S.
700 1 $aDIAS, M. R.
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Embrapa Cerrados (CPAC) |
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