Abstract
Dwarf tomatoes are advantageous when cultivated in a plant factory with artificial light because they can grow well in a small volume. However, few studies have been reported on cultivation in a controlled environment for improving productivity. We performed two experiments to investigate the effects of photosynthetic photon flux density (PPFD; 300, 500, and 700 μmol m−2 s−1) with white light and light quality (white, R3B1 (red:blue = 3:1), and R9B1) with a PPFD of 300 μmol m−2 s−1 on plant growth and radiation-use efficiency (RUE) of a dwarf tomato cultivar (‘Micro-Tom’) at the vegetative growth stage. The results clearly demonstrated that higher PPFD leads to higher dry mass and lower specific leaf area, but it does not affect the stem length. Furthermore, high PPFD increased the photosynthetic rate (Pn) of individual leaves but decreased RUE. A higher blue light proportion inhibited dry mass production with the same intercepted light because the leaves under high blue light proportion had low Pn and photosynthetic light-use efficiency. In conclusion, 300 μmol m−2 s−1 PPFD and R9B1 are the recommended proper PPFD and light quality, respectively, for ‘Micro-Tom’ cultivation at the vegetative growth stage to increase the RUE.
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Claims 9
Claim · model-written summary
Higher PPFD raised dry mass.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- higher PPFDe0
- Outcome
- dry masse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher PPFD leads to higher dry mass”
t0“Tomato”
Claim · model-written summary
Higher PPFD lowered specific leaf area.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- higher PPFDe0
- Outcome
- specific leaf areae0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher PPFD leads to higher dry mass and lower specific leaf area”
t0“Tomato”
Claim · model-written summary
Higher PPFD did not affect stem length.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- stem lengthe0
- Direction
- does not affecte0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but it does not affect the stem length”
t0“Tomato”
Claim · model-written summary
High PPFD increased leaf photosynthetic rate.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- high PPFDe0
- Outcome
- photosynthetic rate (Pn)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high PPFD increased the photosynthetic rate (Pn) of individual leaves”
t0“Tomato”
Claim · model-written summary
High PPFD decreased radiation-use efficiency.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- high PPFDe0
- Outcome
- RUEe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high PPFD increased the photosynthetic rate (Pn) of individual leaves but decreased RUE”
t0“Tomato”
Claim · model-written summary
A higher blue light proportion inhibited dry mass production at equal intercepted light.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- higher blue light proportione0
- Outcome
- dry mass productione0
- Direction
- inhibitede0
- Comparator
- same intercepted lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A higher blue light proportion inhibited dry mass production with the same intercepted light”
t0“Tomato”
Claim · model-written summary
Leaves under high blue light had low photosynthetic rate and light-use efficiency.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- high blue light proportione0
- Outcome
- Pn and photosynthetic light-use efficiencye0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaves under high blue light proportion had low Pn and photosynthetic light-use efficiency”
t0“Tomato”
Claim · model-written summary
The authors recommend 300 μmol m−2 s−1 PPFD for vegetative Micro-Tom cultivation to increase RUE.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘Micro-Tom’e0
- Organ / stage
- vegetative growth stagee0
- Outcome
- 300 μmol m−2 s−1 PPFDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 μmol m−2 s−1 PPFD and R9B1 are the recommended proper PPFD and light quality, respectively, for ‘Micro-Tom’ cultivation at the vegetative growth stage to increase the RUE”
t0“Tomato”
Claim · model-written summary
The authors recommend R9B1 light quality for vegetative Micro-Tom cultivation to increase RUE.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘Micro-Tom’e0
- Organ / stage
- vegetative growth stagee0
- Outcome
- R9B1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“300 μmol m−2 s−1 PPFD and R9B1 are the recommended proper PPFD and light quality, respectively, for ‘Micro-Tom’ cultivation at the vegetative growth stage to increase the RUE”
t0“Tomato”
The same questions in other papers
light · yield · Solanum lycopersicum (tomato)Positive and negative results
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- positive
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