Abstract
Vegetative and reproductive parameters were measured at maturity on field‐grown soybean plants [ Glycine max (L.) Merr., var. Hark] given CO 2 enrichment to 1,200 (±150) ppm for 5‐week periods corresponding to vegetative, flowering, and pod‐filling stages of development. CO 2 enrichment during the vegetative stage had no effects on the measured parameters at maturity. CO 2 enrichment during flowering caused increased node numbers, leaf and stem dry weights, and pod numbers. Seed size decreased and need yield was not affected. CO 2 enrichment during pod filling had no effects on vegetative parameters, but caused a slight increase in pod number, and a marked increase in pod weight and seed yield at maturity. These results are discussed in terms of source‐sink relationships and the limitations imposed by the availability of photosynthate.
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Claims 7
Claim · model-written summary
Vegetative stage CO2 enrichment did not alter measured maturity parameters.
- Taxon
- soybean
Glycine maxt0 - Treatment
- CO 2 enrichment during the vegetative stagee0
- Outcome
- measured parameters at maturitye0
- Direction
- no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during the vegetative stage had no effects on the measured parameters at maturity”
t0“Soybeans”
Claim · model-written summary
Flowering stage CO2 enrichment increased node numbers, leaf and stem dry weights, and pod numbers.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during floweringe0
- Outcome
- node numbers, leaf and stem dry weights, and pod numberse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during flowering caused increased node numbers, leaf and stem dry weights, and pod numbers”
t0“Soybeans”
Claim · model-written summary
Flowering stage CO2 enrichment decreased seed size.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during floweringe0
- Outcome
- Seed sizee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during flowering caused increased node numbers, leaf and stem dry weights, and pod numbers. Seed size decreased”
t0“Soybeans”
Claim · model-written summary
Flowering stage CO2 enrichment did not affect seed yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during floweringe0
- Outcome
- need yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during flowering caused increased node numbers, leaf and stem dry weights, and pod numbers. Seed size decreased and need yield was not affected”
t0“Soybeans”
Claim · model-written summary
Pod filling CO2 enrichment had no effects on vegetative parameters.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during pod fillinge0
- Outcome
- vegetative parameterse0
- Direction
- no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during pod filling had no effects on vegetative parameters”
t0“Soybeans”
Claim · model-written summary
Pod filling CO2 enrichment slightly increased pod number.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during pod fillinge0
- Outcome
- pod numbere0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during pod filling had no effects on vegetative parameters, but caused a slight increase in pod number”
t0“Soybeans”
Claim · model-written summary
Pod filling CO2 enrichment markedly increased pod weight and seed yield at maturity.
- Taxon
- soybeanGlycine maxt0
- Treatment
- CO 2 enrichment during pod fillinge0
- Outcome
- pod weight and seed yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO 2 enrichment during pod filling had no effects on vegetative parameters, but caused a slight increase in pod number, and a marked increase in pod weight and seed yield at maturity”
t0“Soybeans”
The same questions in other papers
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See all 121 papers →co2 · phenology · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- no effect
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.