Abstract
The objective of this experiment was to examine the influence of continuous and intermittent carbon dioxide enrichment on the growth of greenhouse tomato plants. Tomato plants were grown under four CO2 regimes: Control at 330 ppm, continuous supply at 1000 ppm, and intermittent supply (1h supply/2 hours) at 1000 ppm and 2000 ppm. Carbon enrichment produced an increase in photosynthetic rate and plant dry weight, a decrease in leaf nitrate level, and leaf accumulation of reducing sugars and starch. A loss in efficiency was observed over time in plants grown under high atmospheric C02 concentration. However, intermittent carbon enrichment reduced the plant acclimation. Even with 32% less C02, intermittent enrichment at 1000 ppm produced yields 6% greater than continuous enrichment. The superior yield may be explained by preferential allocation of photosynthates to the fruit under intermittent supply.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Carbon enrichment increased photosynthetic rate and plant dry weight of tomato relative to control at 330 ppm.
- Taxon
- Tomato
Solanum lycopersicume1 - Treatment
- Carbon enrichmente2
- Outcome
- photosynthetic rate and plant dry weighte2
- Direction
- increasee2
- Comparator
- Control at 330 ppme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“Carbon enrichment produced an increase in photosynthetic rate and plant dry weight”
e3“Control at 330 ppm”
Claim · model-written summary
Carbon enrichment decreased leaf nitrate level of tomato relative to control at 330 ppm.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- Carbon enrichmente2
- Outcome
- leaf nitrate levele2
- Direction
- decreasee2
- Comparator
- Control at 330 ppme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“Carbon enrichment produced an increase in photosynthetic rate and plant dry weight, a decrease in leaf nitrate level, and leaf accumulation of reducing sugars and starch”
e3“Control at 330 ppm”
Claim · model-written summary
Carbon enrichment increased leaf accumulation of reducing sugars and starch in tomato relative to control at 330 ppm.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- Carbon enrichmente2
- Outcome
- leaf accumulation of reducing sugars and starche2
- Direction
- increasee2
- Comparator
- Control at 330 ppme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“Carbon enrichment produced an increase in photosynthetic rate and plant dry weight, a decrease in leaf nitrate level, and leaf accumulation of reducing sugars and starch”
e3“Control at 330 ppm”
Claim · model-written summary
A loss in efficiency over time was observed in tomato plants grown under high atmospheric CO2.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- high atmospheric C02 concentratione2
- Outcome
- A loss in efficiencye2
- Qualifier
- over timee2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“A loss in efficiency was observed over time in plants grown under high atmospheric C02 concentration”
Claim · model-written summary
Intermittent carbon enrichment reduced plant acclimation of tomato.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- intermittent carbon enrichmente2
- Outcome
- plant acclimatione2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“However, intermittent carbon enrichment reduced the plant acclimation”
Claim · model-written summary
Intermittent enrichment at 1000 ppm produced tomato yields 6% greater than continuous enrichment, even with 32% less CO2.
- Taxon
- TomatoSolanum lycopersicume1
- Treatment
- intermittent enrichment at 1000 ppme2
- Outcome
- yieldse2
- Direction
- greatere2
- Value
- 6%e2
- Qualifier
- Even with 32% less C02e2
- Comparator
- continuous enrichmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“Even with 32% less C02, intermittent enrichment at 1000 ppm produced yields 6% greater than continuous enrichment”
Claim · model-written summary
The superior tomato yield under intermittent supply may be explained by preferential allocation of photosynthates to the fruit.
- Taxon
- TomatoSolanum lycopersicume1
- Outcome
- superior yielde2
- Qualifier
- preferential allocation of photosynthates to the fruit under intermittent supplye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Tomato plants were grown under four CO2 regimes”
e2“The superior yield may be explained by preferential allocation of photosynthates to the fruit under intermittent supply”