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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: |
14/10/2008 |
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Data da última atualização: |
19/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
DUQUE, L.; SETTER, T.; CEBALLOS, H.; FREGENE, M.; ALVES, A. |
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Afiliação: |
Luis Duque, Cornell University; Tim Setter, Cornell University; Hernan Ceballos, CIAT; Martin Fregene, CIAT; Alfredo Augusto Cunha Alves, CNPMF. |
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Título: |
Evaluation of drought tolerance in contrasting cassava varieties genotypes under field controlled water stressed environment. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 143. |
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Idioma: |
Inglês |
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Notas: |
S10-7. |
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Conteúdo: |
Due to its tolerance to drought and ability to survive uncertain rainfall patterns, cassava is considered a contributor to food security against famine. Our work aims to identify traits that contribute to drought tolerance in cassava and could be utilized for phenotyping in breeding programs. Faurty five cassava lines representing a range of drought tolerance were assessed for their drought tolerance response. Water stress experiments were conducted in field conditions at CIAT in Colombia. Parameters evaluated included non-structural carbohydrate partitioning and remobilization, abscisic acid accumulation, leaf retention, relative water content, leaf canopy temperature, and root growth, among others. Results demonstrated that genotypes differed in their response to water-stress and well-watered conditions. Water stress depleted leaf carbohydrate, consistent with priority carbon utilization rather than use as an osmotic adjustment. Timing of ABA accumulation differed among plant organs. In addition, leaf and stem ABA was negatively correlated with stem and leaf carbohydrate accumulations. Leaf retention was mild in WW treatments (60-80%) and severe in WS treatments (20-40%). All genotypes maintained high RWC (>90%) with litter or no variability in both WW and WS treatments. The diverse drought stress responses and parameters evaluated within genotypes suggest high genotypic variability and potential usage of specific phenotyping schemes. |
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Categoria do assunto: |
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Marc: |
LEADER 02097naa a2200181 a 4500
001 1637951
005 2009-02-19
008 2008 bl uuuu u00u1 u #d
100 1 $aDUQUE, L.
245 $aEvaluation of drought tolerance in contrasting cassava varieties genotypes under field controlled water stressed environment.
260 $c2008
500 $aS10-7.
520 $aDue to its tolerance to drought and ability to survive uncertain rainfall patterns, cassava is considered a contributor to food security against famine. Our work aims to identify traits that contribute to drought tolerance in cassava and could be utilized for phenotyping in breeding programs. Faurty five cassava lines representing a range of drought tolerance were assessed for their drought tolerance response. Water stress experiments were conducted in field conditions at CIAT in Colombia. Parameters evaluated included non-structural carbohydrate partitioning and remobilization, abscisic acid accumulation, leaf retention, relative water content, leaf canopy temperature, and root growth, among others. Results demonstrated that genotypes differed in their response to water-stress and well-watered conditions. Water stress depleted leaf carbohydrate, consistent with priority carbon utilization rather than use as an osmotic adjustment. Timing of ABA accumulation differed among plant organs. In addition, leaf and stem ABA was negatively correlated with stem and leaf carbohydrate accumulations. Leaf retention was mild in WW treatments (60-80%) and severe in WS treatments (20-40%). All genotypes maintained high RWC (>90%) with litter or no variability in both WW and WS treatments. The diverse drought stress responses and parameters evaluated within genotypes suggest high genotypic variability and potential usage of specific phenotyping schemes.
700 1 $aSETTER, T.
700 1 $aCEBALLOS, H.
700 1 $aFREGENE, M.
700 1 $aALVES, A.
773 $tIn: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 143.
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