Intervention effectmodel-written summary

Irrigation under elevated CO2 increased leaf net photosynthetic rate (Pn) and intercellular CO2 concentration (Ci) of maize.

A claim from Interactive Effects of Elevated CO2 Concentration and Irrigation on Photosynthetic Parameters and Yield of Maize in Northeast China · 2014

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation under elevated CO2 increased leaf net photosynthetic rate (Pn) and intercellular CO2 concentration (Ci) of maize.

Taxon
maizeZea mayse1
Treatment
irrigation under elevated [CO2] levelse1
Outcome
leaf net photosynthetic rate (Pn) and intercellular CO2 concentration (Ci)e1
Direction
increasede1
Setting
Jinzhou, Liaoning province, Northeast Chinae0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“a manipulative experiment in Jinzhou, Liaoning province, Northeast China was performed”

✓ located verbatim in the source · abstract, characters 383–469
e1

“irrigation under elevated [CO2] levels increased the leaf net photosynthetic rate (Pn) and intercellular CO2 concentration (Ci) of maize”

✓ located verbatim in the source · abstract, characters 972–1108

Title

Interactive Effects of Elevated CO2 Concentration and Irrigation on Photosynthetic Parameters and Yield of Maize in Northeast China

Fanchao Meng; Jiahua Zhang; Fengmei Yao; et al. PLoS ONE 2014. doi:10.1371/journal.pone.0098318

Other claims from this paper (7)

Record rev-e9b752ef5b0e5137d47a4b50087e736938cba5a539e31fc78f6d40098b691b0b · schema claims-v0.9 · position 1 in the model’s answer

co2 · physiology: photosynthesis · Zea mays (maize)Results differ

33 papers: 21 positive, 12 negative or no effect

20 papers in the same direction as this claim · 12 in the opposite direction

  1. no effect
    Elevated CO2 did not stimulate maize photosynthesis, biomass, or yield without water stress.

    Photosynthesis, Productivity, and Yield of Maize Are Not Affected by Open-Air Elevation of CO2 Concentration in the Absence of Drought · 2006

    Opposite directionCited by this paper

  2. positive
    Elevated CO2 significantly increased non-stress photosynthetic rate in maize, more than in amaranth.

    Elevated CO2 effect on the response of stomatal control and water use efficiency in amaranth and maize plants to progressive drought stress · 2022 · compared with a[CO2]

    Same directionCites this paper

  3. no effect
    Corn photosynthesis was unaffected by carbon dioxide enrichment.

    Responses of Selected Plant Species to Elevated Carbon Dioxide in the Field · 1983

    Opposite direction

  4. no effect
    Corn net photosynthesis was unaffected by carbon dioxide.

    Response of Agronomic and Forest Species to Elevated Atmospheric Carbon Dioxide · 1983

    Opposite direction

  5. no effect
    CO2 enrichment did not enhance the growth or canopy photosynthesis of maize.

    Canopy photosynthesis, evapotranspiration, leaf nitrogen, and transcription profiles of maize in response to CO2 enrichment · 2006 · compared with ambient

    Opposite direction

  6. no effect
    Elevated carbon dioxide did not stimulate photosynthesis, biomass or yield.

    Canopy warming caused photosynthetic acclimation and reduced seed yield in maize grown at ambient and elevated [CO2] · 2015

    Opposite direction

  7. no effect
    Growth at high CO2 had no effect on photosynthesis or photorespiration in maize.

    Acclimation to high CO2 in maize is related to water status and dependent on leaf rank · 2010 · compared with ambient CO(2) conditions

    Opposite direction

  8. negative
    Elevated carbon dioxide substantially decreased corn Pn, Fv'/Fm', qp, and CE at both nitrogen levels.

    Effects of CO2 on the tolerance of photosynthesis to heat stress can be affected by photosynthetic pathway and nitrogen · 2013

    Opposite direction

24 papers more in this group

See all 33 papers →

irrigation · physiology: photosynthesis · Zea mays (maize)Positive and negative results

47 papers: 30 positive, 17 negative or no effect

29 papers in the same direction as this claim · 17 in the opposite direction

  1. negative
    Irrigation water deficiency reduced water content, membrane stability and photosynthetic traits.

    Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment · 2021

    Opposite direction

  2. negative
    Cadmium irrigation decreased photosynthetic efficiency and pigment contents.

    Silymarin-Enriched Biostimulant Foliar Application Minimizes the Toxicity of Cadmium in Maize by Suppressing Oxidative Stress and Elevating Antioxidant Gene Expression · 2021

    Opposite direction

  3. negative
    Sprinkler irrigation decreased maize net photosynthesis on 80% of days, averaging a 19% reduction.

    Daytime Sprinkler Irrigation Effects on Net Photosynthesis of Maize and Alfalfa · 2013

    Opposite direction

  4. negative
    Saltwater irrigation reduced maize photosynthesis, stomatal conductance and internal CO2 concentration.

    Gas exchanges and mineral content of corn crops irrigated with saline water · 2021

    Opposite direction

  5. no effect
    The amount of PAR interception of maize was not affected by deficit irrigation during the growing season.

    Deficit irrigation maintains maize yield through improved soil water extraction and stable canopy radiation interception · 2022

    Opposite direction

  6. negative
    Reduced irrigation and nitrogen rate reduced Fv/Fm in summer maize.

    Nitrogen reduction combined with ETc irrigation maintained summer maize yield and increased water and nitrogen use efficiency · 2023

    Opposite direction

  7. negative
    Every other furrow irrigation (FFI and AFI) decreased photosynthetic pigments in corn compared with conventional furrow irrigation.

    Effect of Every Other Furrow Irrigation and Planting Density on Physiological Traits in Corn (Zea mays L.) · 2012 · compared with conventional furrow irrigation (CFI)

    Opposite direction

  8. negative
    Photosynthetic capacity declined with increasing salinity of the irrigation water.

    Effects of Irrigation Amount and Salinity Levels on Maize (Zea mays L.) Growth, Water Productivity and Carbon Emissions in Arid Region of Northwest China · 2024

    Opposite direction

38 papers more in this group

See all 47 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.