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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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| 6. |  | QUEIROZ, M. A. de; LIMA, A. F.; LOPES, L. H. de O.; VALLEE, G. La recherche sur la petite et moyenne hydraulique agricole et sa politique d;expansion dans le tropique semi-aride bresilien. In: SEMINAIRE: AMENAGEMENTS HYDRO-AGRICOLES ET SYSTEMES DE PRODUCTION 3., 1986, Montpellier, France. Actes... Monptellier: CIRAD-DSA, 1986. v. 1, p. 195-201. (CIRAD. Collection Documents Systemes Agraires, 6).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 7. | | VALLEE, G.; CERQUEIRA, P. R. S.; SILVA, A. de S.; LOPES, L. H. de O. L'irrigation d'appoint a l'aide d'un barrage compartimente dans le tropique semi-aride bresilien. In: SEMINAIRE: AMENAGEMENTS HYDROAGRICOLES ET SYSTEMES DE PRODUCTION, 3., 1986, Montpellier, France. Actes... Montpellier: CIRAD-DSA, 1986. v. 1, p. 83-90. (CIRAD. Collection Documents Systemes Agraires, 6)| Tipo: Artigo em Anais de Congresso |
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| 8. | | LIMA, A. F.; PORTO, E. R.; VIVALLO PINARE, A. G.; LOPES, L. H. de O.; OLIVEIRA, M. C. de; VALLEE, G. J. A.; DORASWAMY, G.; LAL, H. Farming systems research in the brazilian semi arid tropics: the experience of Ouricuri, State of Pernambuco. In: FARMING SYSTEMS RESEARCH SYMPOSIUM, 1984. Manhattan, Kansas, USA. Farming systems research and extension: implementation and monitoring- proceedings. Manahattan: Kansas State University, International Agricultural Programs, 1986. p. 333-348. il. (Kansas State University. Farming Systems Research. Paper Series, 9).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 9. | | VALLEE, G. J. A.; CERQUEIRA, P. R. S.; SILVA, A. de S.; LIMA, A. F.; LOPES, L. H. de O.; VIEIRA, V. J. de S. A irrigacao de salvacao no tropico Semi-Arido brasileiro atraves de barreiro segmentado: (um estudo de caso). In: CONGRESSO NACIONAL DE IRRIGAÇÃO E DRENAGEM, 8., 1988, Florianópolis. Anais... Florianópolis: ABID, 1988. v. 2, p. 875-889.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 10. | | VIVALLO PINARE, A. G.; SCHIFINO, A. C.; LACERDA, C. A. de; MOREIRA, J. N.; SANTANA, R. A. de; VALLEE, G. J. A.; SILVA, M. A. da; SILVA, J. V. da; ARAUJO, F. P. de; FRANZIN, J. P. Método de abordagem e relacionamento com pequenos agricultores. Petrolina: EMBRAPA-CPATSA, 1985. 24 p. (EMBRAPA-CPATSA. Documentos, 35). Trabalho apresentado no 1º Simpósio Brasileiro do Trópico Sem-Árido, Olinda,PE, agosto de 1982.| Biblioteca(s): Embrapa Semiárido. |
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| 11. | | ZOBY, J. L. F.; GOMES, A. C.; ASSAD, E. D.; KORNELIUS, E.; PEREIRA, E. A.; PANIAGO JUNIOR, E.; VALLEE, G.; MARJOLLET, G.; COSTA, I. R. S.; ALBINO, J. C.; AGUIAR, J. L. P.; MARJOLLET, L. S.; RODRIGUEZ CASTRO; L. H.; GASTAL, M. L.; SANTOS, N. A. dos; AFFIN, O. A.; LONGO, R. M. J.; SAUERESSIG, T. M. Pesquisa em sistemas integrados de producao em municipio do agroambiente dos cerrados (Projeto Silvania). In: EMBRAPA. Centro de Pesquisa Agropecuaria dos Cerrados (Planaltina, DF). Relatorio tecnico anual do Centro de Pesquisa Agropecuaria dos Cerrados 1985/1987. Planaltina, 1991. p.36-43.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 11 | |
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