Abstract
Soybeans [ Glycine max (L.) Merr. ‘Kent’ and ‘Ware’], grown under field conditions, were exposed to a CO 2 ‐enriched atmosphere (1232 μL L −1 ) from 22 days after planting to maturity. Seed yield increased 81% in Kent and 56% in Ware in response to CO 2 enrichment. Plants grown at high CO 2 concentrations maintained higher rates of apparent photosynthesis and lower leaf conductances throughout ontogeny than those grown at low CO 2 concentrations. Carbon dioxide‐enriched plants accumulated larger pools of soluble sugars and starch in the leaves compared with control plants. Rapid depletion of the stored carbohydrates was evident at the time flower buds were developing and flowering commenced. Carbon dioxide‐enriched plants also maintained large pools of starch and sucrose in the leaves during the grain‐filling periods, suggesting that these were not utilized for seed development. In contrast, control plants were virtually devoid of sucrose and starch at plant maturity. Examination of leaf chlorophyll, protein and proteolytic enzyme activity revealed that CO 2 enrichment did not delay senescence in soybeans.
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 10
Claim · model-written summary
CO2 enrichment increased seed yield 81% in Kent.
- Taxon
- Soybean
Glycine maxt0 - Material
- Kente0
- Treatment
- CO 2 enrichmente0
- Outcome
- Seed yielde0
- Direction
- increasede0
- Value
- 81%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield increased 81% in Kent and 56% in Ware in response to CO 2 enrichment.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
CO2 enrichment increased seed yield 56% in Ware.
- Taxon
- SoybeanGlycine maxt0
- Material
- Waree0
- Treatment
- CO 2 enrichmente0
- Outcome
- Seed yielde0
- Direction
- increasede0
- Value
- 56%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield increased 81% in Kent and 56% in Ware in response to CO 2 enrichment.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
High CO2 maintained higher apparent photosynthesis throughout ontogeny.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- high CO 2 concentrationse0
- Outcome
- rates of apparent photosynthesise0
- Direction
- highere0
- Qualifier
- throughout ontogenye0
- Comparator
- low CO 2 concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown at high CO 2 concentrations maintained higher rates of apparent photosynthesis and lower leaf conductances throughout ontogeny than those grown at low CO 2 concentrations.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
High CO2 maintained lower leaf conductance throughout ontogeny.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- high CO 2 concentrationse0
- Outcome
- leaf conductancese0
- Direction
- lowere0
- Qualifier
- throughout ontogenye0
- Comparator
- low CO 2 concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown at high CO 2 concentrations maintained higher rates of apparent photosynthesis and lower leaf conductances throughout ontogeny than those grown at low CO 2 concentrations.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
CO2-enriched plants accumulated larger leaf pools of soluble sugars and starch.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leavese0
- Treatment
- Carbon dioxide‐enrichede0
- Outcome
- pools of soluble sugars and starche0
- Direction
- largere0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide‐enriched plants accumulated larger pools of soluble sugars and starch in the leaves compared with control plants.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
Stored carbohydrates depleted rapidly during flower bud development and onset of flowering.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- flower budse0
- Outcome
- stored carbohydratese0
- Direction
- Rapid depletione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid depletion of the stored carbohydrates was evident at the time flower buds were developing and flowering commenced.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
CO2-enriched plants maintained large leaf starch and sucrose pools during grain filling.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leavese0
- Outcome
- pools of starch and sucrosee0
- Direction
- largee0
- Qualifier
- during the grain‐filling periodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide‐enriched plants also maintained large pools of starch and sucrose in the leaves during the grain‐filling periods, suggesting that these were not utilized for seed development.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
The authors infer that the leaf starch and sucrose pools were not used for seed development.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- not utilized for seed developmente0
- Qualifier
- large pools of starch and sucrosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide‐enriched plants also maintained large pools of starch and sucrose in the leaves during the grain‐filling periods, suggesting that these were not utilized for seed development.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
Control plants were nearly devoid of sucrose and starch at maturity.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- plant maturitye0
- Outcome
- virtually devoid of sucrose and starche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, control plants were virtually devoid of sucrose and starch at plant maturity.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
Claim · model-written summary
CO2 enrichment did not delay soybean senescence.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- leafe0
- Treatment
- CO 2 enrichmente0
- Outcome
- senescencee0
- Direction
- did not delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Examination of leaf chlorophyll, protein and proteolytic enzyme activity revealed that CO 2 enrichment did not delay senescence in soybeans.”
t0“CO2‐Enrichment Effects on Soybean Physiology. I. Effects of Long‐Term CO2 Exposure1”
The same questions in other papers
co2 · physiology: photosynthesis · Glycine max (soybean)Results differ
49 papers in the same direction as this paper · 14 in the opposite direction
- positive
- positive
- positive
60 papers more in this group
See all 64 papers →co2 · yield · Glycine max (soybean)Positive and negative results
85 papers in the same direction as this paper · 10 in the opposite direction
- positive
- no effect
- negative
92 papers more in this group
See all 96 papers →co2 · quality: postharvest · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
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.