Título:	Physiological changes of Arabica coffee under different intensities and durations of water stress in the Brazilian cerrado
Autor(es):	Silva, Patrícia Carvalho da Ribeiro Junior, Walter Quadros Ramos, Maria Lucrecia Gerosa Rocha, Omar Cruz Veiga, Adriano Delly Silva, Nathalia Henriques Brasileiro, Lemerson de Oliveira Santana, Charles Cardoso Soares, Guilherme Filgueiras Malaquias, Juaci Vitória Vinson, Christina Cleo
E-mail do autor:	mailto:walter.quadros@embrapa.br
ORCID:	https://orcid.org/0000-0003-4608-6164 https://orcid.org/0000-0002-4516-7352 https://orcid.org/0000-0001-5158-6839 https://orcid.org/0000-0002-3773-7415 https://orcid.org/0000-0001-6720-9624
Assunto:	Café - diversidade genética Fisiologia vegetal Café arábica
Data de publicação:	25-Ago-2022
Editora:	MDPI
Referência:	SILVA, Patrícia Carvalho da et al. Physiological changes of Arabica coffee under different intensities and durations of water stress in the Brazilian cerrado. Plants, Basel, v. 11, n. 14, art. 2198, 2022. DOI 10.3390/plants11172198. Disponível em: https://www.mdpi.com/2223-7747/11/17/2198. Acesso em: 26 set. 2022.
Abstract:	Coffee farmers have faced problems due to drought periods, with irrigation being necessary. In this sense, this study aimed to evaluate the responses to different levels and durations of water deficit in arabica coffee genotypes in the Cerrado region. The experiment consisted of three Coffea arabica genotypes and five water regimes: full irrigation (FI 100 and FI 50—full irrigation with 100% and 50% replacement of evapotranspiration, respectively), water deficit (WD 100 and WD 50—water deficit from June to September, with 100% and 50% replacement of evapotranspiration, respectively) and rainfed (without irrigation). The variables evaluated were gas exchange, relative water content (RWC) and productivity. The results showed that during stress, plants under the FI water regime showed higher gas exchange and RWC, differently from what occurred in the WD and rainfed treatments; however, after irrigation, coffee plants under WDs regained their photosynthetic potential. Rainfed and WD 50 plants had more than 50% reduction in RWC compared to FIs. The Iapar 59 cultivar was the most productive genotype and the E237 the lowest. Most importantly, under rainfed conditions, the plants showed lower physiological and productive potential, indicating the importance of irrigation in Coffea arabica in the Brazilian Cerrado.
Unidade Acadêmica:	Faculdade de Agronomia e Medicina Veterinária (FAV)
Licença:	Plants - Articles published in Sustainability will be Open-Access articles distributed under the terms and conditions of the Creative Commons Attribution License (CC BY). The copyright is retained by the author(s). MDPI will insert the following note at the end of the published text: © 2022 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). Fonte: https://www.mdpi.com/journal/plants/about. Acesso em: 26 set. 2022.
DOI:	https://doi.org/10.3390/plants11172198
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