Intervention effectmodel-written summary

Elevated CO2 did not reduce soybean harvest index.

A claim from Genotypic variation in the response of soybean to elevated CO2 · 2021

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Elevated CO2 did not reduce soybean harvest index.

Taxon
soybeanGlycine maxe1
Treatment
free‐air CO 2 enrichment (FACE) conditionse0
Outcome
harvest indexe1
Direction
no reductione1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“nutritional impact under free‐air CO 2 enrichment (FACE) conditions of soybean genotypes”

✓ located verbatim in the source · abstract, characters 228–316
e1

“Here we report that grain yield increased by 46.9% and no reduction in harvest index was observed among soybean genotypes”

✓ located verbatim in the source · abstract, characters 318–439

Title

Genotypic variation in the response of soybean to elevated CO2

José C. Soares; Lars Zimmermann; Nicolas Zendonadi dos Santos; et al. Plant-Environment Interactions 2021. doi:10.1002/pei3.10065

Other claims from this paper (17)

Record rev-e00a48c2fc2b98d352f4ebb1e630b4ab6748b3450c2e26873911f8e5c2503f3c · schema claims-v0.9 · position 2 in the model’s answer

co2 · yield · Glycine max (soybean)Positive and negative results

96 papers: 86 positive, 10 negative or no effect

10 papers in the same direction as this claim · 85 in the opposite direction

  1. positive
    Seed yield of soybean increased by 24% at elevated CO2, still lower than the dry weight increase.

    A meta‐analysis of elevated [CO2] effects on soybean (Glycine max) physiology, growth and yield · 2002

    Opposite directionCited by this paper

  2. positive
    Elevated CO2 stimulated seed yield by 9%.

    Is there potential to adapt soybean (Glycine max Merr.) to future [CO2]? An analysis of the yield response of 18 genotypes in free‐air CO2 enrichment · 2014

    Opposite directionCited by this paper

  3. positive
    All soybean cultivars significantly increased seed yield under elevated carbon dioxide by about 40%.

    Rising Atmospheric Carbon Dioxide and Seed Yield of Soybean Genotypes · 2001

    Opposite directionCited by this paper

  4. positive
    Elevated CO2 significantly increased soybean seed yield per plant, with cultivar responses from 0% to 62%.

    Phenotypic plasticity conditions the response of soybean seed yield to elevated atmospheric CO2 concentration · 2015

    Opposite directionCited by this paper

  5. positive
    Element yield per hectare increased under elevated CO2.

    Seed quality under elevated CO2 differs in soybean cultivars with contrasting yield responses · 2024

    Opposite directionCites this paper

  6. negative
    Increasing CO2 beyond the optimum reduced soybean grain yield and plant biomass.

    Mechanisms behind the declining CO2 fertilization effects on plant growth and grain yield in soybean (Glycine max) · 2025 · compared with this optimum

    Same directionCites this paper

  7. positive
    Elevated CO2 increased seed yield.

    Decreases in Stomatal Conductance of Soybean under Open-Air Elevation of [CO2] Are Closely Coupled with Decreases in Ecosystem Evapotranspiration · 2006

    Opposite direction

  8. positive
    CO2 enrichment increased seed yield, mainly through seed number.

    Response of Soybean to Air Temperature and Carbon Dioxide Concentration · 1989

    Opposite direction

87 papers more in this group

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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.