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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
10/01/2008 |
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Data da última atualização: |
29/01/2008 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, A. A. C.; DITA, M. A.; SILVA, A. F.; DUQUE, L.; SETTER, T. L. |
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Afiliação: |
Alfredo Augusto Cunha Alves, CNPMF; Miguel Angel Dita, CNPMF; Alineaurea F. Silva; Luis Duque; Tim L. Setter. |
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Título: |
Evaluation of drought tolerance contrasting cassava varieties under semi-arid environment. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: ANNUAL RESEARCH MEETING, 2007, Benoni. Poster Abstrcts...Benoni: Generation Challenge Programme - CGIAR, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava varieties are being field evaluated under irrigation and rainfed conditions in the semi-arid environment of Petrolina, Brazil, where the annual average rainfall and potencial evapotranspiration are around 560 mm and 1500 mm, respectively. Plants has been submitted to two water treatment: irrigation and water deficit (irrigated only in the first 3 months after planting). Trials were evaluated in different periods using growth and physiological parameters, aiming to identify most contrasting traits that can be useful to select genotypes for drought tolerant attributes. From the preliminar analysisof the trials'data (not completed yet), the results have showed significant effect of water deficit treatment on production's parameters such as tuber roots fresh weight, number of tuber roots, dry matter and harvest index, with different responses among varieties. The most contrasting traits that have showed correlation to the varieties performance are leaf retention, leaf conductance, and early bulking. Additional analyses, such as abscisic acid, sugars and starch accumulation are currently undergoing. These results will be useful, not only for characterizing the varieties as tolerant or susceptible to drought, but also for defining the better traits for genotype selection in the breeding program. |
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Thesagro: |
Stress. |
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Thesaurus Nal: |
cassava; irrigation; water. |
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Categoria do assunto: |
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Marc: |
LEADER 01957naa a2200217 a 4500
001 1654198
005 2008-01-29
008 2007 bl --- 0-- u #d
100 1 $aALVES, A. A. C.
245 $aEvaluation of drought tolerance contrasting cassava varieties under semi-arid environment.
260 $c2007
520 $aCassava varieties are being field evaluated under irrigation and rainfed conditions in the semi-arid environment of Petrolina, Brazil, where the annual average rainfall and potencial evapotranspiration are around 560 mm and 1500 mm, respectively. Plants has been submitted to two water treatment: irrigation and water deficit (irrigated only in the first 3 months after planting). Trials were evaluated in different periods using growth and physiological parameters, aiming to identify most contrasting traits that can be useful to select genotypes for drought tolerant attributes. From the preliminar analysisof the trials'data (not completed yet), the results have showed significant effect of water deficit treatment on production's parameters such as tuber roots fresh weight, number of tuber roots, dry matter and harvest index, with different responses among varieties. The most contrasting traits that have showed correlation to the varieties performance are leaf retention, leaf conductance, and early bulking. Additional analyses, such as abscisic acid, sugars and starch accumulation are currently undergoing. These results will be useful, not only for characterizing the varieties as tolerant or susceptible to drought, but also for defining the better traits for genotype selection in the breeding program.
650 $acassava
650 $airrigation
650 $awater
650 $aStress
700 1 $aDITA, M. A.
700 1 $aSILVA, A. F.
700 1 $aDUQUE, L.
700 1 $aSETTER, T. L.
773 $tIn: ANNUAL RESEARCH MEETING, 2007, Benoni. Poster Abstrcts...Benoni: Generation Challenge Programme - CGIAR, 2007.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 184 | |
| 3. |  | ALVES, A. A. C. Preservation and use of wild Manihot species. In: MARIANTE, A. da S.; SAMPAIO, M. J. A.; INGLIS, M. C. V. (Ed.). The State of Brazil´s plant genetic resources : second national report : conservation and sustainable utilization for food and agriculture. Brasília, DF : Embrapa Technological Information, 2009. p. 114-115 il.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 5. | | ALVES, A. A. C. Fisiologia da mandioca. Cruz das Almas: EMBRAPA-CNPMF, 1990. 25 p. Trabalho apresentado no 7º Curso Intensivo Nacional de Mandioca, 1990.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 6. | | ALVES, A. A. C. Fisiologia da mandioca. In: SOUZA, L. da S.; FARIAS, A. R. N.; MATTOS, P. L. P. de; FUKUDA, W. M. G. (ed.). Aspectos socioeconômicos e agronômicos da mandioca. Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical, 2006. p. 139-162.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 184 | |
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