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| Registros recuperados : 30 | |
| 5. |  | JORGE, V; FREGENE, M; BONIARBALE, M; TOHME, J; VERDIER, V. Molecular genetic mapping of resistance to xanthomosas axonopodis pv. manihotis in cassava. Revista Brasileira de Mandioca, Cruz das Almas, v.17, p.41, nov., 1998., Suplemento.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 6. | | ALVES, A.; FREGENE, M.; SETTER, T.; DUQUE, L.; FERGUSON, M.; MKAMILO, G. Identifying the physiological and genetic traits related to drought tolerance mechanisms in cassava. In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 142. S10-6.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 7. | | FARIAS, A. R. N.; BELLOTTI, A. C.; FREGENE, M.; SILVA, A. F.; ALVES, A. A. C. Avaliação de híbridos interespecíficos de mandioca para resistência a artrópodes-praga em condições semi-áridas. In: CONGRESSO BRASILEIRO DA MANDIOCA, 12., 2007, Paranavaí. Mandioca: bioenergia, alimento e renda. Botucatu: CERAT- UNESP, [2007].| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 8. | | SANCHEZ, O; RESTREPO, S; DUQUE, M. C; FREGENE, M; BONIERBALE, M; VERDIER, V. Application of AFLP for genetic characterization of cassava. Revista Brasileira de Mandioca, Cruz das Almas, v.17, p.43, nov., 1998. Suplemento.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 9. | | BELLOTTI, A.; FREGENE, M.; ALVES, A.; OKOGBENIN, E.; EGESI, C.; OKAI, E.; BAGUMA, Y.; PARIYO, A. Development of low-cost technologies for pyramiding useful genes from wild relatives of cassava into elite progenitors. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Project abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 36-37.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 12. | | ALVES, A. A. C.; MENDES, R. A.; FREGENE, M.; BELLOTTI, A. Experiências em pré-melhoramento de mandioca : utilização do potencial de espécies silvestres de mandioca como fonte de resistência a estresses bióticos e abióticos. In: LOPES, M. A.; FÁVERO, A. P. FERREIRA, M. A. J. da; FALEIRO, F. G. (Org.). Curso internacional de pré-melhoramento de plantas. Brasília, DF : Embrapa Recursos Genéticos e Biotecnologia, 2006. p. 143-146. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 185).| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 13. | | ALVES, A.; SETTER, T.; FREGENE, M.; FERGUSON, M.; DUQUE, L.; MUTEGI, R.; MKAMILO, G. Traits related to drought tolerance mechanisms in cassava. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 14. | | FREGENE, M.; ANGEL, F.; SUAREZ, M. C.; JANNETH, G.; CHAVARRIAGA, P.; ROCA, W. BONIERBALE, M.; TOHME, J. Genome mapping in cassava improvement: challenges, achievements and opportunities. Revista Brasileira de Mandioca, Cruz das Almas, v.17, p.24, nov., 1998. Suplemento.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 15. | | FREGENE, M.; OKOGBENIN, E.; ANGEL, F.; SUAREZ, M. C.; JANNETH, G.; CHAVARRIAGA, P.; ROCA, W.; BONIERBALE, M.; TOHME, J. Genome mapping in cassava improvement: challenges, achievements and opportunities Brasilia: Embrapa Recursos Genetico e Biotecnologia/CBN, 2000 In: INTERNATIONAL SCIENTIFIC MEETING ON CASSAVA BIOTECHNOLOGY, 1998. Slavador-Bahia. Proceedings... Brasilia, DF: Embrapa Recursos Geneticos e Biotecnologia/CBN, 2000. 625p. Editado por Luiz J. C. B. Carvalho, Ann Marie Thro, Alberto...| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 16. | | DITA, M. A.; JESUS, J. de; SILVA, A. F.; BELLOTTI, A.; FREGENE, M.; ALVES, A. A. C. Avaliação de híbridos interespecíficos de mandioca para a resistência a doenças. In: CONGRESSO BRASILEIRO DA MANDIOCA, 12., 2007, Paranavaí. Mandioca: bioenergia, alimento e renda. Botucatu: CERAT- UNESP, [2007].| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | LOKE, J.; ÁLVAREZ, E.; VALLEJO, F. A.; MARÍN, J.; FREGENE, M.; RIVERA, S.; LLANO, G.; PINEDA, B. Análisis de QTLS de la resistencia a pudrición de raíz causada por Phytophthora tropiclis en una población segregante de yuca (Manihot esculenta Crantz). Acta Agronomica, Colombia, v.53, n.3/4, p. 35-41, jun., 2005.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 18. | | MUTEGI, R.; FERGUSON, M.; MAASS, B. L.; MKAMILO, G.; KAMAU, J.; ADJEBENG-DANQUAH, J.; ALVES, A.; SETTER, T.; FREGENE, M. Field evaluation of cassava varieties under drought stress in Kenya, Tanzania and Ghana. In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 148. SP10-07.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 19. | | MUTEGI, R.; FERGUSON, M.; MAASS, B. L.; MKAMILO, G.; KAMAU, J.; ADJEBENG-DANQUAH, J.; ALVES, A.; SETTER, T.; FREGENE, M. Field evaluation of cassava varieties under drought stress in Kenia, Tanzania and Ghana. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 54.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 30 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
16/10/2008 |
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Data da última atualização: |
03/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, A.; SETTER, T.; FREGENE, M.; FERGUSON, M.; DUQUE, L.; MUTEGI, R.; MKAMILO, G. |
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Afiliação: |
Alfredo Augusto Cunha Alves, CNPMF; Tim Setter, Cornell University; Martin Fregene, CIAT; Morag Ferguson, IITA; Luis Duque, Cornell University; Rosemary Mutegi, ICRISAT-Nairobi; Geoffrey Mkamilo, ARI-Tanzania. |
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Título: |
Traits related to drought tolerance mechanisms in cassava. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53. |
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Idioma: |
Inglês |
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Conteúdo: |
Contrasting cassava varieties were screened in semi-arid environments to characterise genotypes for drought tolerance traits. The following hypotheses were supported: 1) genotypes that accumulated substantial stem starch reserves may be more able to sustain meristems and other respiring organs during a prolonged stress; 2) genotypes that maintain deep fibrous root growth perform better in drought; 3) genotypes that maintain partiotioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata are more able to maintain water status and retain leaves. Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were differentially affected in the cassava varieties and highly correlated to yield performance under water deficit. The different responses to water deficit for some parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programmes. Three segregating populations with a total of 370 individuals were produced. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL1468 x BRA255, from 307 SSRs screened. Genotyping and phenotyping of the mapping populations are underway. |
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Categoria do assunto: |
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Marc: |
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100 1 $aALVES, A.
245 $aTraits related to drought tolerance mechanisms in cassava.
260 $c2008
520 $aContrasting cassava varieties were screened in semi-arid environments to characterise genotypes for drought tolerance traits. The following hypotheses were supported: 1) genotypes that accumulated substantial stem starch reserves may be more able to sustain meristems and other respiring organs during a prolonged stress; 2) genotypes that maintain deep fibrous root growth perform better in drought; 3) genotypes that maintain partiotioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata are more able to maintain water status and retain leaves. Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were differentially affected in the cassava varieties and highly correlated to yield performance under water deficit. The different responses to water deficit for some parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programmes. Three segregating populations with a total of 370 individuals were produced. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL1468 x BRA255, from 307 SSRs screened. Genotyping and phenotyping of the mapping populations are underway.
700 1 $aSETTER, T.
700 1 $aFREGENE, M.
700 1 $aFERGUSON, M.
700 1 $aDUQUE, L.
700 1 $aMUTEGI, R.
700 1 $aMKAMILO, G.
773 $tIn: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53.
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