Abstract
This study was conducted to investigate the growth characteristics of cucumber (Cucumis sativus L. 'Joeunbaekdadagi') and tomato (Solanum lycopersicum L. 'Dotaerang Dia') seedlings by light intensities and CO2 concentrations in a closed-type plant production system (CPPS). Cucumber and tomato seeds were sown in 50-cell trays and germinated in CPPS at air temperature 25 ± 1°C and relative humidity 50 ± 10% for 4 days. After germination, the CO2 concentrations and light intensity treatment were treated at 500 (ambient), 1,000, and 1,500 µmol·mol-1 and 100, 200, and 300 µmol·m-2·s-1 photosynthetic photon flux density (PPFD), respectively. The leaf area of cucumber showed the highest value in CO2 1,500 μmol·mol-1. However, the leaf area of the tomato had no significant difference in CO2 concentrations and light intensities treatments. In cucumber and tomato both seedlings, the growth and quality such as compactness and leaf area rate were increased with the increase of light intensity, and there were highest in 300 µmol·m-2·s-1. The root surface and number of root tips of cucumber and tomato seedlings were significantly increased with the increase in light intensity. In conclusion, the regulation of the CO2 concentrations and light intensity can control the growth and quality of cucumber and tomato seedlings in CPPS, especially, increasing the light intensity can improve more significantly the growth and quality of seedlings.
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Claims 6
Claim · model-written summary
Cucumber leaf area was greatest at CO2 1,500 μmol·mol-1.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- CO2 1,500 μmol·mol-1e0
- Outcome
- leaf areae0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf area of cucumber showed the highest value in CO2 1,500 μmol·mol-1.”
Claim · model-written summary
Tomato leaf area did not significantly differ across CO2 and light treatments.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- CO2 concentrations and light intensities treatmentse0
- Outcome
- leaf areae0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf area of the tomato had no significant difference in CO2 concentrations and light intensities treatments.”
Claim · model-written summary
Higher light increased cucumber compactness and leaf area rate, peaking at 300 µmol·m-2·s-1.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- light intensitye0
- Outcome
- compactness and leaf area ratee0
- Direction
- increasede0
- Value
- 300 µmol·m-2·s-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In cucumber and tomato both seedlings, the growth and quality such as compactness and leaf area rate were increased with the increase of light intensity, and there were highest in 300 µmol·m-2·s-1.”
Claim · model-written summary
Higher light increased tomato compactness and leaf area rate, peaking at 300 µmol·m-2·s-1.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- light intensitye0
- Outcome
- compactness and leaf area ratee0
- Direction
- increasede0
- Value
- 300 µmol·m-2·s-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In cucumber and tomato both seedlings, the growth and quality such as compactness and leaf area rate were increased with the increase of light intensity, and there were highest in 300 µmol·m-2·s-1.”
Claim · model-written summary
Increasing light significantly increased cucumber root surface and root tip number.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- light intensitye0
- Outcome
- root surface and number of root tipse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root surface and number of root tips of cucumber and tomato seedlings were significantly increased with the increase in light intensity.”
Claim · model-written summary
Increasing light significantly increased tomato root surface and root tip number.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- light intensitye0
- Outcome
- root surface and number of root tipse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root surface and number of root tips of cucumber and tomato seedlings were significantly increased with the increase in light intensity.”
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See all 226 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.