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“yield decrease”

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2000

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paper W3139947680 ✕

Associationobservedoriginal resultmeasured

Claim · model-written summary

Most studied variables declined linearly as ozone increased.

Taxon: wheatTriticum aestivumt0
Treatment: [O3]e0
Outcome: Most of the variablese0
Direction: decreasee0

Verbatim

e0
“Most of the variables showed a linear decrease trend with an increase of [O3].”
✓ located verbatim in the source · abstract, characters 897–975

t0
“wheat”
✓ located verbatim in the source · title, characters 32–37

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.
Intervention effect Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.
Intervention effect Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.
Observation Leaf physiological traits declined more than yield under elevated ozone.
Observation Spring and winter wheat responded similarly to elevated ozone.
Observation Asat, Gs and Chl decreased most strongly at grain filling.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Asat, Gs and Chl decreased most strongly at grain filling.

Taxon: wheatTriticum aestivumt0
Organ / stage: grain filling stagee0
Outcome: Asat, Gs and Chle0
Direction: decreasee0

Verbatim

e0
“The most significant decrease for Asat, Gs and Chl was found in grain filling stage.”
✓ located verbatim in the source · abstract, characters 976–1060

t0
“wheat”
✓ located verbatim in the source · title, characters 32–37

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.
Intervention effect Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.
Intervention effect Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.
Observation Leaf physiological traits declined more than yield under elevated ozone.
Observation Spring and winter wheat responded similarly to elevated ozone.
Association Most studied variables declined linearly as ozone increased.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Leaf physiological traits declined more than yield under elevated ozone.

Taxon: wheatTriticum aestivume0
Treatment: elevated [O3]e0
Outcome: leaf physiological characterse0
Direction: much greatere0
Comparator: yielde0

Verbatim

e0
“The decrease in leaf physiological characters was much greater than that in yield when wheat was expose to elevated [O3], while light-saturated photosynthetic rate (Asat), stomatal conductance (Gs) and chlorophyll content (Chl) decreased by 40%, 31%, and 46%, respectively.”
✓ located verbatim in the source · abstract, characters 540–813

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.
Intervention effect Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.
Intervention effect Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.
Observation Spring and winter wheat responded similarly to elevated ozone.
Association Most studied variables declined linearly as ozone increased.
Observation Asat, Gs and Chl decreased most strongly at grain filling.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.

Taxon: wheatTriticum aestivume0
Treatment: elevated [O3]e0
Outcome: stomatal conductance (Gs)e0
Direction: decreasede0
Value: 31%e0

Not reportedComparator

Verbatim

e0
“The decrease in leaf physiological characters was much greater than that in yield when wheat was expose to elevated [O3], while light-saturated photosynthetic rate (Asat), stomatal conductance (Gs) and chlorophyll content (Chl) decreased by 40%, 31%, and 46%, respectively.”
✓ located verbatim in the source · abstract, characters 540–813

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.
Intervention effect Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.
Observation Leaf physiological traits declined more than yield under elevated ozone.
Observation Spring and winter wheat responded similarly to elevated ozone.
Association Most studied variables declined linearly as ozone increased.
Observation Asat, Gs and Chl decreased most strongly at grain filling.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.

Taxon: wheatTriticum aestivume0
Treatment: elevated [O3]e0
Outcome: chlorophyll content (Chl)e0
Direction: decreasede0
Value: 46%e0

Not reportedComparator

Verbatim

e0
“The decrease in leaf physiological characters was much greater than that in yield when wheat was expose to elevated [O3], while light-saturated photosynthetic rate (Asat), stomatal conductance (Gs) and chlorophyll content (Chl) decreased by 40%, 31%, and 46%, respectively.”
✓ located verbatim in the source · abstract, characters 540–813

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.
Intervention effect Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.
Observation Leaf physiological traits declined more than yield under elevated ozone.
Observation Spring and winter wheat responded similarly to elevated ozone.
Association Most studied variables declined linearly as ozone increased.
Observation Asat, Gs and Chl decreased most strongly at grain filling.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Elevated ozone decreased wheat light-saturated photosynthetic rate (Asat) by 40%.

Taxon: wheatTriticum aestivume0
Treatment: elevated [O3]e0
Outcome: light-saturated photosynthetic rate (Asat)e0
Direction: decreasede0
Value: 40%e0

Not reportedComparator

Verbatim

e0
“The decrease in leaf physiological characters was much greater than that in yield when wheat was expose to elevated [O3], while light-saturated photosynthetic rate (Asat), stomatal conductance (Gs) and chlorophyll content (Chl) decreased by 40%, 31%, and 46%, respectively.”
✓ located verbatim in the source · abstract, characters 540–813

Title

A meta-analysis of responses of wheat yield formation to elevated ozone concentration

Feng Zhao 科学通报(英文版) 2009

Other claims from this paper (12)

Intervention effect Elevated ozone decreased wheat grain yield by 26%.
Intervention effect Elevated ozone decreased wheat grain weight by 18%.
Intervention effect Elevated ozone decreased wheat grain number per ear by 11%.
Intervention effect Elevated ozone decreased wheat ear number per plant by 5%.
Intervention effect Elevated ozone decreased wheat harvest index by 11%.
Intervention effect Elevated ozone decreased wheat stomatal conductance (Gs) by 31%.
Intervention effect Elevated ozone decreased wheat chlorophyll content (Chl) by 46%.
Observation Leaf physiological traits declined more than yield under elevated ozone.
Observation Spring and winter wheat responded similarly to elevated ozone.
Association Most studied variables declined linearly as ozone increased.
Observation Asat, Gs and Chl decreased most strongly at grain filling.
Intervention effect Elevated CO2 could significantly mitigate elevated ozone harm.

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“yield decrease”

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