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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: |
19/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, A.; DITA, M.; SILVA, A.; OLIVEIRA, A. de; SETTER, T. |
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Afiliação: |
Alfredo Augusto Cunha Alves, CNPMF; Miguel Angel Dita, CNPMF; Alineaurea Silva, CPATSA; Ana de Oliveira, CPATSA; Tim Setter, Cornell University. |
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Título: |
Evaluation of drought tolerance in contrasting cassava varieties under a Brazilian semi-arid 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. 149. |
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Idioma: |
Inglês |
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Notas: |
SP10-09. |
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Conteúdo: |
To identify some traits that are most contrasting and can be useful attributes in selecting genotypes for drought tolerance in cassava, contrasting varieties have been evaluated in some field trials in the semi-arid environment of Petrolina, northeast Brazil, where the annual average rainfall and potential evapotranspiration are around 560 mm and 1500 mm, respectively. Plants were submitted to two water treatments: irrigation and water deficit (irrigated only until 2-3 months after planting-MAP) and evaluated in different periods using growth and physiological parameters. The results showed significant effect of the Petrolina's environment on production's parameters such as storage roots fresh weight-SRFW, number of storage roots-NSR, root dry matter-RDM and harvest index-HI, with different responses among varieties. In general, all the parameters were negatively affected by water deficit, with more pronunced effect on SRFW (reduction of 57%), followed by NSR (38%). Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were also differentially affected in the cassava varieties. Under water deficit, leaf retention, leaf conductance, and storage root establishment (onset of root bulking), measured within the critical period for water stress (until 6-7 MAP), were highly correlated to yield performance at the final harvest (11 MAP). The different responses to water deficit for the evaluated parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programs. MenosTo identify some traits that are most contrasting and can be useful attributes in selecting genotypes for drought tolerance in cassava, contrasting varieties have been evaluated in some field trials in the semi-arid environment of Petrolina, northeast Brazil, where the annual average rainfall and potential evapotranspiration are around 560 mm and 1500 mm, respectively. Plants were submitted to two water treatments: irrigation and water deficit (irrigated only until 2-3 months after planting-MAP) and evaluated in different periods using growth and physiological parameters. The results showed significant effect of the Petrolina's environment on production's parameters such as storage roots fresh weight-SRFW, number of storage roots-NSR, root dry matter-RDM and harvest index-HI, with different responses among varieties. In general, all the parameters were negatively affected by water deficit, with more pronunced effect on SRFW (reduction of 57%), followed by NSR (38%). Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were also differentially affected in the cassava varieties. Under water deficit, leaf retention, leaf conductance, and storage root establishment (onset of root bulking), measured within the critical period for water stress (until 6-7 MAP), were highly correlated to yield performance at the final harvest (11 MAP). The different responses to water deficit for the evaluated parameters has helped u... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02254naa a2200181 a 4500
001 1637147
005 2009-02-19
008 2008 bl uuuu u00u1 u #d
100 1 $aALVES, A.
245 $aEvaluation of drought tolerance in contrasting cassava varieties under a Brazilian semi-arid environment.
260 $c2008
500 $aSP10-09.
520 $aTo identify some traits that are most contrasting and can be useful attributes in selecting genotypes for drought tolerance in cassava, contrasting varieties have been evaluated in some field trials in the semi-arid environment of Petrolina, northeast Brazil, where the annual average rainfall and potential evapotranspiration are around 560 mm and 1500 mm, respectively. Plants were submitted to two water treatments: irrigation and water deficit (irrigated only until 2-3 months after planting-MAP) and evaluated in different periods using growth and physiological parameters. The results showed significant effect of the Petrolina's environment on production's parameters such as storage roots fresh weight-SRFW, number of storage roots-NSR, root dry matter-RDM and harvest index-HI, with different responses among varieties. In general, all the parameters were negatively affected by water deficit, with more pronunced effect on SRFW (reduction of 57%), followed by NSR (38%). Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were also differentially affected in the cassava varieties. Under water deficit, leaf retention, leaf conductance, and storage root establishment (onset of root bulking), measured within the critical period for water stress (until 6-7 MAP), were highly correlated to yield performance at the final harvest (11 MAP). The different responses to water deficit for the evaluated parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programs.
700 1 $aDITA, M.
700 1 $aSILVA, A.
700 1 $aOLIVEIRA, A. de
700 1 $aSETTER, T.
773 $tIn: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 149.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 44 | |
| 4. |  | DITA, M. A.; JESUS, J. de; SILVA, A. F.; BELLOTTI, A.; ALVES, A. A. C. Avaliação de híbridos interespecíficos de mandioca para a resistência a doenças. In: CONGRESSO BRASILEIRO DE MANDIOCA, 12., 2007, Paranavaí. Mandioca: bioenergia, alimento e renda. Paranavaí: SBM, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
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| 5. | | ALVES, A. A. C.; SILVA, A. F.; QUEIROZ, D. C.; DITA, M. A. Avaliação de variedades de mandioca para tolerância à seca, em condições semi-áridas do Brasil. In: CONGRESSO BRASILEIRO DE MANDIOCA, 12., 2007, Paranavaí. Mandioca: bioenergia, alimento e renda - anais. Paranavaí: SBM, 2007. 1 CD-ROM. Edição dos resumos do XII Congresso Brasileiro de Mandioca na Revista Raízes e Amidos Tropicais, v. 3, out. 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
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| 6. | | ALVES, A. A. C.; SILVA, A. F.; QUEIROZ, D. C.; DITA, M. A. Avaliação de variedades de mandioca para tolerância à seca, em condições semi-áridas do Brasil. In: CONGRESSO BRASILEIRO DA MANDIOCA, 12., 2007, Paranavaí. Mandioca: bioenergia, alimento e renda. Botucatu: CERAT- UNESP, [2007].| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 8. | | DITA, M.; HERAI, R.; YAMAGISHI, M.; FERREIRA, G.; SOUZA, M.; GIACHETTO, P.; WAALWIJK, C.; KEMA, G. Comparative transcriptome analyses of Fusarium oysporum f. sp. cubense. Phytopathology, v. 101, n. 6, Supplement, p. S43, 2011. Trabalho apresentado no: APS-IPPC 2011 Joint Meeting in Honolulu, Hawaii, August 6-10, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 9. | | FUKUDA, W.; OLIVEIRA, L.; PEREIRA, M.; CEBALLOS, H.; CARVALHO, J.; NUTTI, M.; DITA, M. Breeding cassava for enhancement of carotenoid in the biofortification program in Brazil. In: INTERNATIONAL MEETING OF THE MICRONUTRIENT FORUM, 2., 2009, Beijing, China. Micronutrients, health and development: evidence-based programs: program/abstracts. Washington, DC: USAID: Academy for Educational Development, 2009. p. 106.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 10. | | FUKUDA, W.; SANTOS, V.; OLIVEIRA, L.; PEREIRA, M.; CEBALLOS, H.; NUTTI, M.; CARVALHO, J.; DITA, M. Breeding cassava for enhancement of carotenoid, iron and zinc contents. In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent, Belgium. Cassava: meeting the challenges of the new millennium. Ghent, Belgium: Institute of Plant Biotechnology for Developing Countries, 2008. p. 106. S7-9.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 11. | | DITA, M. A.; WAALWIJK, C.; PAIVA, L.; KEMA, G.; SOUZA JUNIOR, M. Kit diagnóstico para a maior ameaça bananicultura mundial. In: SIMPÓSIO SOBRE INOVAÇÃO E CRIATIVIDADE CIENTÍFICA NA EMBRAPA, 2., 2010, Brasília, DF. Anais... Brasília, DF: Embrapa, 2010. Disponível em: Acesso em: 21 fev. 2011.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 12. | | DITA, M. A.; WAALWIJK, C.; PAIVA, L.; KEMA, G.; SOUZA JUNIOR, M. T. Kit diagnóstico para a raça 4 tropical de Fusarium oxysporum f. sp. cubense, agente causal do mal-do-Panamá da bananeira. In: SIMPÓSIO SOBRE INOVAÇÃO E CRIATIVIDADE CIENTÍFICA NA EMBRAPA, 2., 2010, Brasília, DF. Anais... Brasília, DF: Embrapa, 2010. Disponível em: Acesso em: 21 fev. 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 15. | | FORTUNATO, A. A.; RODRIGUES, F. Á.; PEREIRA, O. L.; DITA, M. A. Indução de macroconídios de Fusarium oxysporum f. sp. cubense utilizando meios de cultura. Fitopatologia Brasileira, Brasília, DF, v. 32, p. 188-189, ago. 2007. Suplemento. Edição dos Resumos do XL Congresso Brasiliero de Fitopatologia, Maringá, ago. 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | DIE, J. V.; GONZÁLEZ VERDEJO, C. I.; DITA, M. A.; SALVADOR, N.; ROMAN, B. Gene expression analysis of molecular mechanisms of defense induced in Medicago truncatula parasitized by Orobanche crenata. Plant Physiology and Biochemistry, Paris, v. 47, n. 3, p. 635-641, mar. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 19. | | DITA, M. A.; KOBAYASHI, A. K.; WAALWIJK, C.; SOUZA JUNIOR, M. T.; KEMA, G. H. J. Genetic transformation of Fusarium oxysporum f. sp. cubense. Tropical Plant Pathology, v. 34, p. S177, ago. 2009. Suplemento. Ref. 606. Edição dos Resumos do 42° Congresso Brasileiro de Fitopatologia, Rio de Janeiro, ago. 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| Registros recuperados : 44 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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