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- Title
Does the film formed by the Bordeaux mixture on the leaf surface of fig trees affect photochemical processes?
- Authors
DEBASTIANI, Matheus Marangon; Alves GOMES, Angélica; Ferreira DONATO, Angria; PIZZATTO, Mariana; Silva CARNEIRO, Samuel; Carvalho da SILVA, Andréa
- Abstract
This work aimed to evaluate changes in gas exchanges and chlorophyll a fluorescence in fig plants due to the film formed on the leaf surface by Bordeaux mixture applied to control rust. The experiment was conducted in an orchard with 7-month-old fig trees of the cultivar Roxo de Valinhos, in April 2020. A completely randomized experimental design with four replications was used, consisting of two treatments (with and without application of Bordeaux mixture), evaluating leaves in three different parts of the branch (apical, middle, and basal) in five evaluations. The evaluated gas exchange parameters were: carbon, leaf temperature, transpiration, stomatal conductance, and photosynthesis. The evaluated chlorophyll fluorescence parameters were: maximum and effective quantum yield of the photosystem, electron transport rate, photochemical and non-photochemical quenching, and leaf area. The film formed by Bordeaux mixture application did not affect the photochemical phases of photosynthesis and chlorophyll a fluorescence. The leaf position on the branch affected internal CO2 concentration and net CO2 assimilation over time. Leaves in the middle part of the branch presented larger leaf areas than those in the apical and basal parts.
- Subjects
FIG; PHOTOCHEMISTRY; GAS exchange in plants; CHLOROPHYLL; PHOTOSYNTHESIS
- Publication
Nativa, 2023, Vol 11, Issue 2, p200
- ISSN
2318-7670
- Publication type
Article
- DOI
10.31413/nat.v11i2.15728