Abstract
summary The dry weight of barley plants in 700 μmol mol −1 CO 2 was increased by 19 d after planting relative to plants grown in 350 μmol mol −1 CO 2 . Infection of the second leaf by powdery mildew led to reduced growth rates in both 350 and 700 μmol mol −1 CO 2 , but the reduction in growth was transitory in 350 μmol mol −1 CO 2 . Neither the allometric coefficient k between shoot and root, nor the leaf weight ratio, was altered by growth in 700 μmol mol −1 CO 2 or by infection with powdery mildew. The number of tillers produced increased per plant but not per unit d. wt in 700 μmol mol −1 CO 2 . The growth response of barley to increased concentrations of CO 2 and/or to infection with powdery mildew was not associated with alterations in net carbon partitioning, so a change in the ratio of photosynthetic to non‐photosynthetic tissue, contributed to neither the growth response of barley to 700 μmol mol −1 CO 2 nor to infection with powdery mildew. The increase in the growth rate of barley in 700 μmol mol −1 CO 2 and the reduction in the growth rate after infection occurred at the same time as increased and reduced rates of net photosynthesis respectively.
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Claims 10
Claim · model-written summary
Barley dry weight increased by day 19 under 700 versus 350 μmol mol −1 CO2.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- 700 μmol mol −1 CO 2e0
- Outcome
- dry weighte0
- Direction
- increasede0
- Qualifier
- 19 d after plantinge0
- Comparator
- 350 μmol mol −1 CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The dry weight of barley plants in 700 μmol mol −1 CO 2 was increased by 19 d after planting relative to plants grown in 350 μmol mol −1 CO 2”
Claim · model-written summary
Powdery mildew reduced barley growth rates at both CO2 concentrations.
- Treatment
- Infection of the second leaf by powdery mildewe0
- Interactor
- powdery mildewe0pathogen
- Outcome
- growth ratese0
- Direction
- reducede0
- Qualifier
- both 350 and 700 μmol mol −1 CO 2e0
Not reportedTaxonComparator
Verbatim
e0“Infection of the second leaf by powdery mildew led to reduced growth rates in both 350 and 700 μmol mol −1 CO 2”
Claim · model-written summary
The growth reduction from infection was transitory at 350 μmol mol −1 CO2.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- reduction in growthe0
- Direction
- reductione0
- Qualifier
- transitory in 350 μmol mol −1 CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“the reduction in growth was transitory in 350 μmol mol −1 CO 2”
Claim · model-written summary
Elevated CO2 did not alter the shoot-root allometric coefficient or leaf weight ratio.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 700 μmol mol −1 CO 2e0
- Outcome
- allometric coefficient k between shoot and root, nor the leaf weight ratioe0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Neither the allometric coefficient k between shoot and root, nor the leaf weight ratio, was altered by growth in 700 μmol mol −1 CO 2”
Claim · model-written summary
Powdery mildew did not alter the shoot-root allometric coefficient or leaf weight ratio.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- infection with powdery mildewe0
- Interactor
- powdery mildewe0pathogen
- Outcome
- allometric coefficient k between shoot and root, nor the leaf weight ratioe0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Neither the allometric coefficient k between shoot and root, nor the leaf weight ratio, was altered by growth in 700 μmol mol −1 CO 2 or by infection with powdery mildew”
Claim · model-written summary
Elevated CO2 increased tillers per plant.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 700 μmol mol −1 CO 2e0
- Outcome
- number of tillers producede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“The number of tillers produced increased per plant but not per unit d. wt in 700 μmol mol −1 CO 2”
Claim · model-written summary
Elevated CO2 did not increase tillers per dry weight.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 700 μmol mol −1 CO 2e0
- Outcome
- per unit d. wte0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“The number of tillers produced increased per plant but not per unit d. wt in 700 μmol mol −1 CO 2”
Claim · model-written summary
Growth responses to CO2 and infection were not associated with changes in net carbon partitioning.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- increased concentrations of CO 2e0
- Interactor
- powdery mildewe0pathogen
- Outcome
- net carbon partitioninge0
- Direction
- not associatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth response of barley to increased concentrations of CO 2 and/or to infection with powdery mildew was not associated with alterations in net carbon partitioning”
Claim · model-written summary
Barley growth rate increase under elevated CO2 coincided with increased net photosynthesis.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 700 μmol mol −1 CO 2e0
- Outcome
- rates of net photosynthesise0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in the growth rate of barley in 700 μmol mol −1 CO 2 and the reduction in the growth rate after infection occurred at the same time as increased and reduced rates of net photosynthesis respectively”
Claim · model-written summary
Growth rate reduction after infection coincided with reduced net photosynthesis.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- infectione0
- Outcome
- rates of net photosynthesise0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“the reduction in the growth rate after infection occurred at the same time as increased and reduced rates of net photosynthesis respectively”
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See all 25 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.