Abstract
Ascorbic acid is a non-enzymatic antioxidant compound essential for plant defense under salt stress conditions. It can induce salt stress tolerance and enable the use of saline water in hydroponic cultivation with substrates. This study evaluated the effect of foliar application of ascorbic acid on the yield and postharvest quality of ‘Laranja’ cherry tomatoes grown in saline nutrient solutions under a substrate-based hydroponic system. The experiment was conducted in a greenhouse in Campina Grande, Paraíba, Brazil, in a randomized block design in a 5 × 5 factorial arrangement, corresponding to five levels of electrical conductivity of the saline nutrient solution—SNS (2.1—Control, 2.8, 3.5, 4.2, and 4.9 dS m−1) and five concentrations of ascorbic acid—AA (0, 150, 300, 450, and 600 mg L−1), with four replications. Salinity above 2.1 dS m−1 reduced yield components and phenolic compound content. However, the saline nutrient solution of 4.9 dS m−1 combined with 600 mg L−1 foliar application of AA increased fruit firmness, soluble solids, and titratable acidity. Additionally, SNS of 4.9 dS m−1 enhanced the levels of vitamin C, flavonoids, and anthocyanins. While AA improved postharvest quality of cherry tomatoes, it did not increase production under salt stress. Foliar application is thus a promising approach for enhancing fruit quality of cherry tomatoes grown in hydroponic systems using saline water, supporting sustainable production in semiarid regions.
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Claims 7
Claim · model-written summary
Salinity above 2.1 dS m−1 reduced cherry tomato yield components.
- Taxon
- Cherry Tomatoes
Solanum lycopersicum var. cerasiformet0 - Treatment
- Salinity above 2.1 dS m−1e0
- Outcome
- yield componentse0
- Direction
- reducede0
- Comparator
- 2.1 dS m−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity above 2.1 dS m−1 reduced yield components and phenolic compound content”
t0“Cherry Tomatoes”
Claim · model-written summary
Salinity above 2.1 dS m−1 reduced cherry tomato phenolic compound content.
- Taxon
- Cherry TomatoesSolanum lycopersicum var. cerasiformet0
- Treatment
- Salinity above 2.1 dS m−1e0
- Outcome
- phenolic compound contente0
- Direction
- reducede0
- Comparator
- 2.1 dS m−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity above 2.1 dS m−1 reduced yield components and phenolic compound content”
t0“Cherry Tomatoes”
Claim · model-written summary
Saline solution with foliar AA increased fruit firmness, soluble solids and titratable acidity.
- Taxon
- Cherry TomatoesSolanum lycopersicum var. cerasiformet0
- Treatment
- saline nutrient solution of 4.9 dS m−1 combined with 600 mg L−1 foliar application of AAe0
- Outcome
- fruit firmness, soluble solids, and titratable aciditye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the saline nutrient solution of 4.9 dS m−1 combined with 600 mg L−1 foliar application of AA increased fruit firmness, soluble solids, and titratable acidity”
t0“Cherry Tomatoes”
Claim · model-written summary
SNS of 4.9 dS m−1 enhanced vitamin C, flavonoids and anthocyanins in cherry tomatoes.
- Taxon
- Cherry TomatoesSolanum lycopersicum var. cerasiformet0
- Treatment
- SNS of 4.9 dS m−1e0
- Outcome
- levels of vitamin C, flavonoids, and anthocyaninse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SNS of 4.9 dS m−1 enhanced the levels of vitamin C, flavonoids, and anthocyanins”
t0“Cherry Tomatoes”
Claim · model-written summary
AA improved postharvest quality of cherry tomatoes under salt stress.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformee0
- Treatment
- AAe0
- Outcome
- postharvest qualitye0
- Direction
- improvede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AA improved postharvest quality of cherry tomatoes, it did not increase production under salt stress”
Claim · model-written summary
AA did not increase cherry tomato production under salt stress.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformee0
- Treatment
- AAe0
- Outcome
- productione0
- Direction
- did not increasee0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AA improved postharvest quality of cherry tomatoes, it did not increase production under salt stress”
Claim · model-written summary
The authors recommend foliar application for cherry tomato fruit quality in saline hydroponics.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformee0
- Treatment
- Foliar applicatione0
- Outcome
- enhancing fruit qualitye0
- Setting
- hydroponic systems using saline watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application is thus a promising approach for enhancing fruit quality of cherry tomatoes grown in hydroponic systems using saline water”
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