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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
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
13/10/2008 |
Data da última atualização: |
19/02/2009 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ALVES, A.; FREGENE, M.; SETTER, T.; DUQUE, L.; FERGUSON, M.; MKAMILO, G. |
Afiliação: |
Alfredo Augusto Cunha Alves, CNPMF; Martin Fregene, CIAT; Tim Setter, Cornell University; Luis Duque, Cornel University; Morag Ferguson, IITA; Geoffrey Mkamilo, Agricultural Research Institute. |
Título: |
Identifying the physiological and genetic traits related to drought tolerance mechanisms in cassava. |
Ano de publicação: |
2008 |
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. 142. |
Idioma: |
Inglês |
Notas: |
S10-6. |
Conteúdo: |
To elucidate the mechanisms underlying drought tolerance in cassava and to determine the best physiological and genetic traits to be selected for in breeding programs, a collaborative work among Embrapa, CIAT, IITA, Cornell University, and African NARIs (National Agricultural Research Institures) has been going on since 2005, funded by the Generation Chalenge Program (GCP). Selected contrasting varieties have been screened and evaluated in four representative semi-arid environments in Brazil, Colombia, Tanzania and Ghana. Several trials have tested some hypotheses to characterize genotypes for drought tolerance traits, including: 1) genotypes that accumulate 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 would perform better in drought; 3) genotypes that maintain partitioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata might be more able to maintain status and retain leaves. Contrasting cassava varieties were crossed at CIAT and segregation populations of F1 seeds obtained. The embryos of each seed were rescued and micropropagated in vitro. A total of 370 individuals from three populations were cloned and around five in vitro copies of each genotype were shipped to the target sites for multiplication and phenotypic evaluation. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL 1468 x BRA 255, from 307 SSRs screened. Genotyping of the mapping populations is underway. MenosTo elucidate the mechanisms underlying drought tolerance in cassava and to determine the best physiological and genetic traits to be selected for in breeding programs, a collaborative work among Embrapa, CIAT, IITA, Cornell University, and African NARIs (National Agricultural Research Institures) has been going on since 2005, funded by the Generation Chalenge Program (GCP). Selected contrasting varieties have been screened and evaluated in four representative semi-arid environments in Brazil, Colombia, Tanzania and Ghana. Several trials have tested some hypotheses to characterize genotypes for drought tolerance traits, including: 1) genotypes that accumulate 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 would perform better in drought; 3) genotypes that maintain partitioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata might be more able to maintain status and retain leaves. Contrasting cassava varieties were crossed at CIAT and segregation populations of F1 seeds obtained. The embryos of each seed were rescued and micropropagated in vitro. A total of 370 individuals from three populations were cloned and around five in vitro copies of each genotype were shipped to the target sites for multiplication and phenotypic evaluation. A genotypic parental screen has rev... Mostrar Tudo |
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LEADER 02288naa a2200193 a 4500 001 1637949 005 2009-02-19 008 2008 bl uuuu u00u1 u #d 100 1 $aALVES, A. 245 $aIdentifying the physiological and genetic traits related to drought tolerance mechanisms in cassava. 260 $c2008 500 $aS10-6. 520 $aTo elucidate the mechanisms underlying drought tolerance in cassava and to determine the best physiological and genetic traits to be selected for in breeding programs, a collaborative work among Embrapa, CIAT, IITA, Cornell University, and African NARIs (National Agricultural Research Institures) has been going on since 2005, funded by the Generation Chalenge Program (GCP). Selected contrasting varieties have been screened and evaluated in four representative semi-arid environments in Brazil, Colombia, Tanzania and Ghana. Several trials have tested some hypotheses to characterize genotypes for drought tolerance traits, including: 1) genotypes that accumulate 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 would perform better in drought; 3) genotypes that maintain partitioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata might be more able to maintain status and retain leaves. Contrasting cassava varieties were crossed at CIAT and segregation populations of F1 seeds obtained. The embryos of each seed were rescued and micropropagated in vitro. A total of 370 individuals from three populations were cloned and around five in vitro copies of each genotype were shipped to the target sites for multiplication and phenotypic evaluation. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL 1468 x BRA 255, from 307 SSRs screened. Genotyping of the mapping populations is underway. 700 1 $aFREGENE, M. 700 1 $aSETTER, T. 700 1 $aDUQUE, L. 700 1 $aFERGUSON, M. 700 1 $aMKAMILO, G. 773 $tIn: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 142.
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