Data/hora: 25/06/2024 17:54:58

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 18/09/2018
Data da última atualização: | 27/09/2018
Autoria: | CRUZ, J. L.; LECAIN, D. R.; ALVES, A. A. C.; COELHO, E. F.; COELHO FILHO, M. A.
Afiliação: | JAILSON LOPES CRUZ, CNPMF; DANIEL R. LECAIN, USDA-ARS; ALFREDO AUGUSTO CUNHA ALVES, CNPMF; EUGENIO FERREIRA COELHO, CNPMF; MAURICIO ANTONIO COELHO FILHO, CNPMF.
Título: | Elevated CO2 reduces whole transpiration and substantially improves root production of cassava grown under water deficit.
Ano de publicação: | 2018
Fonte/Imprenta: | Archives of Agronomy and Soil Science, 2018.
Idioma: | Inglês
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.
Thesagro: | Mandioca.
Thesaurus Nal: | Cassava.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (32487-1) - UPC - AP - DD - Publicação digital -  -  - DIS