Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/55450
Título: High phosphorus supply enhances leaf gas exchange and growth of young Arabica coffee plants under water deficit
Palavras-chave: Biomass
Chlorophyll
Photosynthesis
Starch
Sucrose
Water use efficiency
Phosphorus - Fertilization
Biomassa
Clorofila
Fotossíntese
Amido
Eficiência no uso da água
Fósforo - Fertilização
Data do documento: 2022
Editor: Cambridge University Press
Citação: RAKOCEVIC, M. et al. High phosphorus supply enhances leaf gas exchange and growth of young Arabica coffee plants under water deficit. Experimental Agriculture, Cambridge, v. 58, e30, 2022. DOI: 10.1017/S0014479722000266.
Resumo: Drought is considered as the major environmental stress affecting coffee production, and high phosphorus (P) supply may alleviate the drought effects on crop metabolism. Here, we hypothesized that high P supply would mitigate the impacts of drought on Arabica coffee physiology, morphology, and biomass accumulation. Potted Arabica coffee plants were grown under two P levels: the recommended P fertilization (P), and twice the recommended fertilization (+P), and two water regimes: well-watered and water withholding for 32 days. Leaf, stem, and root P concentrations were increased under +P, with plants showing higher photosynthesis and growth than the ones receiving the recommended P dose. Higher plant growth under high P supply seems to upregulate leaf photosynthesis through the source–sink relationship. Under the water deficit, the reduction of leaf photosynthesis, stomatal conductance, transpiration, water use efficiency, carboxylation efficiency, chlorophyll content, number of plagiotropic branches, plant leaf area, and vegetative biomass production was similar comparing plants fertilized with the recommended P to those supplied with +P. However, Arabica coffee trees under high P supply and water deficit presented morphological and physiological traits similar to plants under well-watered and recommended P fertilization.
URI: https://doi.org/10.1017/S0014479722000266
http://repositorio.ufla.br/jspui/handle/1/55450
Aparece nas coleções:DBI - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.