Effect of fruit load of the first coffee harvests on leaf gas exchange

dc.contributor.authorMuñoz, Carlos Andres Unigarro
dc.contributor.authorBejarano, Lina Marcela Díaz
dc.contributor.authorAcuña, José Ricardo
dc.date.accessioned2024-07-15T22:30:45Z
dc.date.available2024-07-15T22:30:45Z
dc.date.issued2021-01-14
dc.description.abstractCoffee production between the first and second harvest presents a difference in the fruit load with the plant age that could affect the leaf gas exchange. This research aimed to evaluate the effect of the increase in fruit load that occurs between the first and second harvest of the Coffea arabica L. production cycle on the measured gas exchange, at the two phenological stages of the fruit. The accessions E057, E318, E338 and E554 were used, as well as a completely randomized design, with three replications, using the accessions as treatments and the harvest measurements during the production cycle as the repeated measures. The variables yield per tree, number of fruits, absolute growth rates for height and stem, leaf area, leaf-to-fruit ratio and leaf gas exchange were measured across the phenological stages of fruit filling and ripening. The increase in the fruit load that occurs with age in the second harvest, if compared to the first harvest, showed a positive and significant effect on the net assimilation rate that was not expected for the obtained leaf-to-fruit ratios. Likewise, the differences in the assimilation rates were higher during the fruit-filling stage. This result suggests that the source-sink relationship may vary with the crop age and fruit phenological stage, and is not entirely depend on the leaf-to-fruit ratio.pt_BR
dc.formatpdfpt_BR
dc.identifier.citationMUÑOZ, C. A. U.; BEJANARO, L. M. D.; ACUÑA, J. R. Effect of fruit load of the first coffee harvests on leaf gas exchange. Pesquisa Agropecuária Tropical, Goiânia, v. 51, e69865, 14 jan. 2021.pt_BR
dc.identifier.issn1983-4063
dc.identifier.urihttps://doi.org/10.1590/1983-40632021v5169865pt_BR
dc.identifier.urihttp://www.sbicafe.ufv.br/handle/123456789/14464
dc.language.isoenpt_BR
dc.publisherEscola de Agronomia - UFGpt_BR
dc.relation.ispartofseriesPesquisa Agropecuária Tropical;v. 51, 2021;
dc.rightsOpen Accesspt_BR
dc.subjectCoffea arabica Lpt_BR
dc.subjectLeaf-to-fruit ratiopt_BR
dc.subjectFruit phenological stagept_BR
dc.subjectNet assimilation ratept_BR
dc.subject.classificationCafeicultura::Agroclimatologia e fisiologiapt_BR
dc.titleEffect of fruit load of the first coffee harvests on leaf gas exchangept_BR
dc.typeArtigopt_BR

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