Abstract
summary Seedlings of Betula pubescens, Betula verrucosa and Alnus incana were grown for 50 days in growth chambers at four ozone concentrations (25, 35, 53 and 82 nl 1 −1 ) fot 7 h day −1 . Shoot and root dry weight decreased almost linearly with increasing ozone concentration in the three species. Shoot/root and leaf/stem dry weight ratios were unaffected by ozone concentration, while leaf senescence was significantly enhanced by increasing the concentration. Visible ozone injury was observed at 53 nl 1 −1 and above.
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Claims 4
Claim · model-written summary
Shoot and root dry weight declined almost linearly with increasing ozone in the three species.
- Taxon
- Betula pubescens, Betula verrucosa and Alnus incana
Betula pendula
Alnus incana
Betula pubescense1 - Treatment
- increasing ozone concentratione0
- Outcome
- Shoot and root dry weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot and root dry weight decreased almost linearly with increasing ozone concentration in the three species.”
e1“Seedlings of Betula pubescens, Betula verrucosa and Alnus incana were grown for 50 days”
Claim · model-written summary
Shoot/root and leaf/stem dry weight ratios were unaffected by ozone concentration.
- Taxon
- Betula pubescens, Betula verrucosa and Alnus incanaBetula pendulaAlnus incanaBetula pubescense1
- Treatment
- ozone concentratione0
- Outcome
- Shoot/root and leaf/stem dry weight ratiose0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot/root and leaf/stem dry weight ratios were unaffected by ozone concentration”
e1“Seedlings of Betula pubescens, Betula verrucosa and Alnus incana were grown for 50 days”
Claim · model-written summary
Leaf senescence increased significantly with ozone concentration.
- Taxon
- Betula pubescens, Betula verrucosa and Alnus incanaBetula pendulaAlnus incanaBetula pubescense2
- Treatment
- ozone concentrationse1
- Outcome
- leaf senescencee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf senescence was significantly enhanced by increasing the concentration”
e1“four ozone concentrations”
e2“Seedlings of Betula pubescens, Betula verrucosa and Alnus incana were grown for 50 days”
Claim · model-written summary
Visible ozone injury appeared at 53 nl 1 −1 and above.
- Taxon
- Betula pubescens, Betula verrucosa and Alnus incanaBetula pendulaAlnus incanaBetula pubescense1
- Outcome
- Visible ozone injurye0
- Value
- 53 nl 1 −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visible ozone injury was observed at 53 nl 1 −1 and above.”
e1“Seedlings of Betula pubescens, Betula verrucosa and Alnus incana were grown for 50 days”
The same questions in other papers
ozone · quality: postharvest · Betula pubescens (downy birch)Results agree
1 paper in the same direction as this paper
- negative
ozone · growth · Betula pendula (white birch)Results agree
8 papers in the same direction as this paper
- negative
- negative
- negative
5 papers more in this group
See all 9 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.