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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
18/09/2018 |
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Data da última atualização: |
27/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CRUZ, J. L.; LECAIN, D. R.; ALVES, A. A. C.; COELHO, E. F.; COELHO FILHO, M. A. |
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Afiliação: |
JAILSON LOPES CRUZ, CNPMF; DANIEL R. LECAIN, USDA-ARS; ALFREDO AUGUSTO CUNHA ALVES, CNPMF; EUGENIO FERREIRA COELHO, CNPMF; MAURICIO ANTONIO COELHO FILHO, CNPMF. |
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Título: |
Elevated CO2 reduces whole transpiration and substantially improves root production of cassava grown under water deficit. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Archives of Agronomy and Soil Science, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Weevaluated the possibility of elevated CO2 concentration ([CO2]) to reduce the negative effect of drought on growth and physiological parameters of cassava (Manihot esculenta Crantz). Plants were grown with 390 ppm or750 ppm of CO2, under well-watered or under water deficit conditions. The study was conducted in a climate-controlled greenhouse using 14 L pots, for 100 days. For any value of fraction of transpirable soil water (FTSW) the carbon assimilation was always higher for plants grown under elevated [CO2]. Still, elevated [CO2] reduced the negative effect of drought on transpiration, water use efficiency, all growth measures and harvest index. Elevated [CO2] increased the dry matter of tuber roots (DMTR) of wellwatered plants by 17.4%. The DMTR of plants grown under water were 124.4 g and 58.9 g, respectively, for plants under elevated and ambient CO2, an increase of 112%. Thus, the CO2 effect was relatively stronger to the production of tuberous roots when cassava were subjected to water-deficit. Our results suggest that cassava tuber production might be resilient to changes in precipitation that will accompany higher atmospheric CO2 and reinforce cassava as a specie that can significantly contribute to mitigate hunger in a changing climate environment. |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01868naa a2200193 a 4500
001 2095996
005 2018-09-27
008 2018 bl uuuu u00u1 u #d
100 1 $aCRUZ, J. L.
245 $aElevated CO2 reduces whole transpiration and substantially improves root production of cassava grown under water deficit.$h[electronic resource]
260 $c2018
520 $aWeevaluated the possibility of elevated CO2 concentration ([CO2]) to reduce the negative effect of drought on growth and physiological parameters of cassava (Manihot esculenta Crantz). Plants were grown with 390 ppm or750 ppm of CO2, under well-watered or under water deficit conditions. The study was conducted in a climate-controlled greenhouse using 14 L pots, for 100 days. For any value of fraction of transpirable soil water (FTSW) the carbon assimilation was always higher for plants grown under elevated [CO2]. Still, elevated [CO2] reduced the negative effect of drought on transpiration, water use efficiency, all growth measures and harvest index. Elevated [CO2] increased the dry matter of tuber roots (DMTR) of wellwatered plants by 17.4%. The DMTR of plants grown under water were 124.4 g and 58.9 g, respectively, for plants under elevated and ambient CO2, an increase of 112%. Thus, the CO2 effect was relatively stronger to the production of tuberous roots when cassava were subjected to water-deficit. Our results suggest that cassava tuber production might be resilient to changes in precipitation that will accompany higher atmospheric CO2 and reinforce cassava as a specie that can significantly contribute to mitigate hunger in a changing climate environment.
650 $aCassava
650 $aMandioca
700 1 $aLECAIN, D. R.
700 1 $aALVES, A. A. C.
700 1 $aCOELHO, E. F.
700 1 $aCOELHO FILHO, M. A.
773 $tArchives of Agronomy and Soil Science, 2018.
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