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Looking for adjustments to severe drought in coffee: lessons of a rainfall exclusion plot in the Southern Brazil

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dc.contributor.author Silva, Debora Valim da
dc.contributor.author Naves, Vicente Luiz
dc.contributor.author Toro-Herrera, Mayra Alejandra
dc.contributor.author Vieira, Daniel Amorim
dc.contributor.author Mendonça, Ane Marcela das Chagas
dc.contributor.author Rambal, Serge
dc.contributor.author Barbosa, João Paulo Rodrigues Alves Delfino
dc.date.accessioned 2023-10-24T22:54:14Z
dc.date.available 2023-10-24T22:54:14Z
dc.date.issued 2022-12-29
dc.identifier.citation SILVA, Debora Valim da; NAVES, Vicente Luiz; TORO-HERRERA, Mayra Alejandra; VIEIRA, Daniel Amorim; MENDONÇA, Ane Marcela das Chagas; RAMBAL, Serge; BARBOSA, João Paulo Rodrigues Alves Delfino. Looking for adjustments to severe drought in coffee: lessons of a rainfall exclusion plot in the Southern Brazil. Coffee Science, Lavras, MG, v. 17, p. e172015, 29 dec. 2022. Disponível em: https://coffeescience.ufla.br/index.php/Coffeescience/article/view/2015. Acesso em: 24 oct. 2023. pt_BR
dc.identifier.issn 1984-3909
dc.identifier.uri DOI: https://doi.org/10.25186/.v17i.2015 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13909
dc.description.abstract Rainfall exclusion experiments allow us assessing the effects of environmental stresses such as long-term water limitations on both leaf and canopy structural traits. This work aimed to evaluate how leaf anatomical traits and canopy development of productive coffee trees change when submitted to more dry conditions in the southern region of Minas Gerais - Brazil. The experimental plots have been set up in a plantation area in which is growing Coffea arabica L. cv. Mundo Novo- IAC 379-19, in a completely randomized arrangement, composed by three treatments: Control (C) - no gutter system; Control plus roof (Ĉ) and Exclusion system (E). Leaf anatomical and canopy traits were determined within a year at the end of each season: late Spring- 2015 (Sp), and late Summer (Su), late Autumn (Au) and late Winter (Wi) - 2016. During the studied period the rainfall exclusion condition led to a reduction in the relative water content (RWC) of leaves. In the leaf-level, as the dry condition increase, the leaves invested in thicker cuticles, reduced xylem and phloem areas and smaller stomata, especially with the rainfall exclusion. In the canopy-level, there was a remarkable reduction in leaf area index (LAI) especially in the winter as a strategy of reduction of transpiratory area, when the availability of water decreased around 25%. In a context of reduced water availability due to effects of climate change, coffee trees may be able to present modifications at both levels, to cope with the effects of this abiotic stress. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Universidade Federal de Lavras pt_BR
dc.relation.ispartofseries Coffee Science;v. 17, p. 1-14, 2022;
dc.rights Open access pt_BR
dc.subject Adaptation strategies pt_BR
dc.subject Coffea arabica L. pt_BR
dc.subject Ecophysiology pt_BR
dc.subject Leaf anatomy pt_BR
dc.subject Seasonal patterns pt_BR
dc.subject.classification Cafeicultura::Agroclimatologia e fisiologia pt_BR
dc.title Looking for adjustments to severe drought in coffee: lessons of a rainfall exclusion plot in the Southern Brazil pt_BR
dc.type Artigo pt_BR

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