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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
09/11/2017 |
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Data da última atualização: |
14/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FREITAS, J. P. X. de; DINIZ, R. P. A.; OLIVEIRA, S. A. S. de; SANTOS, V. da S.; OLIVEIRA, E. J. de. |
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Afiliação: |
JUAN PAULO XAVIER DE FREITAS, UFRB; RAFAEL PARREIRA DINIZ, UFRB; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; VANDERLEI DA SILVA SANTOS, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Inbreeding depression for severity caused by leaf diseases in cassava. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Euphytica, p. 213-215, August, 2017. |
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ISSN: |
1573-5060 |
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DOI: |
10.1007/s10681-017-1995-0 |
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Idioma: |
Inglês |
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Conteúdo: |
he use of inbred populations in cassava has been little exploited by breeding programs. Therefore, the objective of this study was to evaluate the effects of inbreeding depression (ID) in S1 families for resistance to leaf diseases and to select transgressive individuals. Five cassava varieties (Cascuda, BRS Formosa, Fécula Branca, Mani-Branca and BRS Mulatinha) were selfed, and the families S0 and S1 were evaluated for severity caused by cassava white leaf spot (CWLS), cassava brown leaf spot (CBRLS) and cassava blight leaf spot (CBLS) under field conditions. Differences among S1 families and between generations (S0 × S1) were identified for all diseases. The wide variation of CWLS (2.16?93.38%), CBRLS (15.31?69.39%) and CBLS (15.70?53.64%) severity highlighted the occurrence of ID in S1 families, in which the average was 12.61% (CWLS), 13.72% (CBRLS) and 15.92% (CBLS). Mean estimates of homozygous loci contribution (µ + ?) were of higher magnitude compared with heterozygous loci contribution (?) for all diseases and families. Even in the occurrence of ID, it was possible to select resistant S1 individuals, in a way that the reduction in the severity of diseases based on the selection of the five most resistant individuals was 75.80% (S1-BRS Formosa) for CWLS, 38.64% (S1-Cascuda) for CBRLS and 33.51% (S1-Cascuda) for CBLS. These results demonstrate the predominance of additive genetic effects and the possibility to select transgressive individuals in S1 families for increasing the resistance to cassava leaf diseases. Menoshe use of inbred populations in cassava has been little exploited by breeding programs. Therefore, the objective of this study was to evaluate the effects of inbreeding depression (ID) in S1 families for resistance to leaf diseases and to select transgressive individuals. Five cassava varieties (Cascuda, BRS Formosa, Fécula Branca, Mani-Branca and BRS Mulatinha) were selfed, and the families S0 and S1 were evaluated for severity caused by cassava white leaf spot (CWLS), cassava brown leaf spot (CBRLS) and cassava blight leaf spot (CBLS) under field conditions. Differences among S1 families and between generations (S0 × S1) were identified for all diseases. The wide variation of CWLS (2.16?93.38%), CBRLS (15.31?69.39%) and CBLS (15.70?53.64%) severity highlighted the occurrence of ID in S1 families, in which the average was 12.61% (CWLS), 13.72% (CBRLS) and 15.92% (CBLS). Mean estimates of homozygous loci contribution (µ + ?) were of higher magnitude compared with heterozygous loci contribution (?) for all diseases and families. Even in the occurrence of ID, it was possible to select resistant S1 individuals, in a way that the reduction in the severity of diseases based on the selection of the five most resistant individuals was 75.80% (S1-BRS Formosa) for CWLS, 38.64% (S1-Cascuda) for CBRLS and 33.51% (S1-Cascuda) for CBLS. These results demonstrate the predominance of additive genetic effects and the possibility to select transgressive individuals in S1 families for increas... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02166naa a2200217 a 4500
001 2079401
005 2017-12-14
008 2017 bl uuuu u00u1 u #d
022 $a1573-5060
024 7 $a10.1007/s10681-017-1995-0$2DOI
100 1 $aFREITAS, J. P. X. de
245 $aInbreeding depression for severity caused by leaf diseases in cassava.$h[electronic resource]
260 $c2017
520 $ahe use of inbred populations in cassava has been little exploited by breeding programs. Therefore, the objective of this study was to evaluate the effects of inbreeding depression (ID) in S1 families for resistance to leaf diseases and to select transgressive individuals. Five cassava varieties (Cascuda, BRS Formosa, Fécula Branca, Mani-Branca and BRS Mulatinha) were selfed, and the families S0 and S1 were evaluated for severity caused by cassava white leaf spot (CWLS), cassava brown leaf spot (CBRLS) and cassava blight leaf spot (CBLS) under field conditions. Differences among S1 families and between generations (S0 × S1) were identified for all diseases. The wide variation of CWLS (2.16?93.38%), CBRLS (15.31?69.39%) and CBLS (15.70?53.64%) severity highlighted the occurrence of ID in S1 families, in which the average was 12.61% (CWLS), 13.72% (CBRLS) and 15.92% (CBLS). Mean estimates of homozygous loci contribution (µ + ?) were of higher magnitude compared with heterozygous loci contribution (?) for all diseases and families. Even in the occurrence of ID, it was possible to select resistant S1 individuals, in a way that the reduction in the severity of diseases based on the selection of the five most resistant individuals was 75.80% (S1-BRS Formosa) for CWLS, 38.64% (S1-Cascuda) for CBRLS and 33.51% (S1-Cascuda) for CBLS. These results demonstrate the predominance of additive genetic effects and the possibility to select transgressive individuals in S1 families for increasing the resistance to cassava leaf diseases.
650 $aCassava
650 $aMandioca
700 1 $aDINIZ, R. P. A.
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aSANTOS, V. da S.
700 1 $aOLIVEIRA, E. J. de
773 $tEuphytica, p. 213-215, August, 2017.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 38 | |
| 13. |  | HOHENFELD, C. S.; FREITAS, J. P. X. de; OLIVEIRA, E. J. de; BARBOSA, C. de J.; NEVES, C. G. Recursos genéticos de maracujazeiro: avaliação de doenças. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: Sociedade Brasileira de Fruticultura, 2010. pdf 1799| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 16. | | OLIVEIRA, S. A. S. de; FREITAS, J. P. X. de; AUD, F. F.; SANTOS, V. da S.; OLIVEIRA, E. J. de. Avaliação da resistência de híbridos de mandioca (Manihot esculenta Crantz) À Mancha-Parda, queima das folhas e Mancha Branca. In: CONGRESSO BRASILEIRO DE MANDIOCA, 15., 2013, Salvador. Inovação e sustentabilidade: da raiz ao amido: trabalhos apresentados. Salvador: CBM: Embrapa, 2013. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | FREITAS, J. P. X. de; OLIVEIRA, E. J. de; JESUS, O. N. de; CRUZ NETO, A. J. da; SANTOS, L. R. dos. Formação de população base para seleção recorrente em maracujazeiro-amarelo com uso de índices de seleção. Pesquisa Agropecuária Brasileira, Brasília, v. 47, n. 3, p. 393-401, mar. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura; Embrapa Unidades Centrais. |
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| 18. | | SOUZA, M. F.; BARBOSA, C. de J.; OLIVEIRA, E. J. de; PASCOAL, T.; OLIVEIRA, M. Z. A.; FREITAS, J. P. X.; NEVES, C. G. Comportamento de híbridos de maracujá em relação à verrugose e a virose do endurecimento dos frutos. Tropical Plant Pathology, v.36, n.3,Brasília, ago, 2011. Suplemento. 1 PDF. 1094.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 19. | | OLIVEIRA, E. J. de; FRAIFE FILHO, G. de A.; FREITAS, J. P. X. de; DANTAS, J. L. L.; RESENDE, M. D. V. de. Plant selection in F2 segregating populations of papaya from commercial hybrids. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 12, n. 3, p. 191-198, Sept. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Florestas; Embrapa Mandioca e Fruticultura. |
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| 20. | | FREITAS, J. P. X. de; OLIVEIRA, E. J. de; SANTOS, F. D.; CRUZ NETO, A. J. da; SANTOS, L. R. dos; NEVES, C. G. Seleção de progênies de maracujazeiro amarelo com base no índice genótipo-ideótipo. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: Sociedade Brasileira de Fruticultura, 2010. 1 CD-ROM. pdf 793| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 38 | |
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