Abstract
SummaryControlled environment experiments were conducted to evaluate the effect of a 2-week change in air temperature imposed after first fruit-set on tomato production scheduling and on the quality of vine-ripened fruit. Experiments were conducted with hydroponically-grown tomato (Lycopersicon esculentum Mill., cv. ‘Laura’). Air temperature was altered from control day/night temperature values of 23°/18°C for a 2-week period starting 10 d after fruit-set. Plants were returned to the 23°/18°C temperature and a minimum of eight fruits per treatment were harvested at three ripening stages, breaker (when 25% of the fruit skin had acquired a red tint), breaker plus 3 d, and breaker plus 6 d. A perturbation of ± 5°C (28°/23°C and 18°/13°C) was used in two Experiments (E1 and E2) and ± 7°C (30°/25°C and 16°/11°C) was used in a third Experiment (E3). Fruits were more responsive to an increase than to a decrease in temperature. Reductions in days to harvest (from 3.1 – 8.5 d) and fruit fresh weight at later stages of vine-ripening were observed for the high temperature treatments. Colour indices, soluble solids contents (SSC), acidity and viscosity at each ripening stage were significantly affected by high temperature treatments. The results indicate that short-term temperature perturbations following first fruit-set can influence the rates at which changes occurred in the external appearance of fruit (colour) and in their internal characteristics. The results can be used to improve environmental control and management strategies for tomato growers.
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Claims 5
Claim · model-written summary
Fruit was more responsive to temperature increase than decrease.
- Taxon
- tomato
Solanum lycopersicumt0 - Outcome
- Fruits were more responsivee0
- Direction
- more responsivee0
- Comparator
- a decrease in temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits were more responsive to an increase than to a decrease in temperature”
t0“tomato”
Claim · model-written summary
High temperature reduced days to harvest by 3.1 to 8.5 days.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high temperature treatmentse0
- Outcome
- days to harveste0
- Direction
- Reductionse0
- Value
- 3.1 – 8.5 de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in days to harvest (from 3.1 – 8.5 d) and fruit fresh weight at later stages of vine-ripening were observed for the high temperature treatments”
t0“tomato”
Claim · model-written summary
High temperature reduced fruit fresh weight at later vine ripening stages.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high temperature treatmentse0
- Outcome
- fruit fresh weighte0
- Direction
- Reductionse0
- Qualifier
- later stages of vine-ripeninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in days to harvest (from 3.1 – 8.5 d) and fruit fresh weight at later stages of vine-ripening were observed for the high temperature treatments”
t0“tomato”
Claim · model-written summary
High temperature significantly affected fruit colour indices, soluble solids, acidity and viscosity at each ripening stage.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high temperature treatmentse0
- Outcome
- Colour indices, soluble solids contents (SSC), acidity and viscositye0
- Qualifier
- at each ripening stagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colour indices, soluble solids contents (SSC), acidity and viscosity at each ripening stage were significantly affected by high temperature treatments”
t0“tomato”
Claim · model-written summary
The authors suggest the results can improve temperature management for tomato growers.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- improve environmental control and management strategiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results can be used to improve environmental control and management strategies for tomato growers”
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