Abstract
This study examines the impact of daily light integral (DLI) from artificial lighting on tomato seedlings cultivated in plant factories. By adjusting the light intensity and photoperiod of LED, the research explored the effects of varying DLIs on the morphology, growth, physiological characteristics, photosynthetic pigment content, and chlorophyll fluorescence of tomato seedlings. The optimal DLI enhanced seedling growth, biomass, root vitality, antioxidant enzyme activity, and photosynthetic pigment synthesis. Excessively high DLI or light intensity inhibited photosynthesis, potentially leading to photoinhibition. This study identified the optimal DLI of 13.2 mol·m−2·d−1 through varying DLI gradients in Exp 1 and Exp 2. Based on these findings, Exp 3 established the optimal growth conditions by setting different light intensities and photoperiods under the most suitable DLI, which were a light intensity of 200 μmol·m−2·s−1 and a photoperiod of 18 h. These results provide significant guidance for optimizing the light environment in the cultivation of tomato seedlings in plant factories, helping to improve the light energy utilization efficiency.
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Claims 6
Claim · model-written summary
Optimal DLI enhanced seedling growth, biomass, and root vitality.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- optimal DLIe0
- Outcome
- seedling growth, biomass, root vitalitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal DLI enhanced seedling growth, biomass, root vitality, antioxidant enzyme activity, and photosynthetic pigment synthesis”
t0“Tomato”
Claim · model-written summary
Optimal DLI enhanced antioxidant enzyme activity and pigment synthesis.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- optimal DLIe0
- Outcome
- antioxidant enzyme activity, and photosynthetic pigment synthesise0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal DLI enhanced seedling growth, biomass, root vitality, antioxidant enzyme activity, and photosynthetic pigment synthesis”
t0“Tomato”
Claim · model-written summary
Excessively high DLI or intensity inhibited photosynthesis.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Excessively high DLI or light intensitye0
- Outcome
- photosynthesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessively high DLI or light intensity inhibited photosynthesis, potentially leading to photoinhibition”
t0“Tomato”
Claim · model-written summary
The identified optimal DLI was 13.2 mol·m−2·d−1.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- optimal DLIe0
- Value
- 13.2 mol·m−2·d−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“identified the optimal DLI of 13.2 mol·m−2·d−1”
t0“Tomato”
Claim · model-written summary
Optimal light intensity was 200 μmol·m−2·s−1.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- light intensitye0
- Value
- 200 μmol·m−2·s−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal growth conditions by setting different light intensities and photoperiods under the most suitable DLI, which were a light intensity of 200 μmol·m−2·s−1 and a photoperiod of 18 h”
t0“Tomato”
Claim · model-written summary
Optimal photoperiod was 18 h under the suitable DLI.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- photoperiode0
- Value
- 18 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimal growth conditions by setting different light intensities and photoperiods under the most suitable DLI, which were a light intensity of 200 μmol·m−2·s−1 and a photoperiod of 18 h”
t0“Tomato”
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