Abstract
Snapdragon seedlings (Antirrhinum majus ’Utah White’) were benched in two adjoining greenhouse compartments. A randomized-block design including three concentrations of gibberellic acid (GA 3 ) and a distilled water control was employed in each compartment. Treatments were replicated three times. Treatment of snapdragon seedlings with GA 3 significantly increased the length of inflorescences, the overall height of the plants at maturity and the fresh weight of the tops when the plants were grown in a carbon dioxide-enriched atmosphere. Treatment hindered root development and reduced chlorophyll content of leaves in relation to dry weight. Plants grown in an atmosphere containing 0.09% CO 2 had longer inflorescences, were taller, had greater fresh weight and more chlorophyll at each level of treatment with GA 3 than such plants grown in an atmosphere containing 0.03% CO 2 . However, these comparisons were considered significant only for total height (control) and fresh weight of tops (0, 10 and 50 μg/ml GA 3 ). Whereas GA 3 at 10 μg/ml reduced length of roots proportionally in both levels of CO 2 , higher concentrations of GA 3 continued to give significant reduction only under the higher level of CO 2 .
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Claims 8
Claim · model-written summary
GA3 increased inflorescence length, mature height and top fresh weight under elevated CO2.
- Taxon
- snapdragon
Antirrhinum majuse0 - Treatment
- GA 3e0
- Outcome
- length of inflorescences, the overall height of the plants at maturity and the fresh weight of the topse0
- Direction
- increasede0
- Setting
- carbon dioxide-enriched atmospheree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of snapdragon seedlings with GA 3 significantly increased the length of inflorescences, the overall height of the plants at maturity and the fresh weight of the tops when the plants were grown in a carbon dioxide-enriched atmosphere.”
Claim · model-written summary
GA3 hindered root development.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- GIBBERELLIC ACIDt0
- Outcome
- root developmente0
- Direction
- hinderede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment hindered root development and reduced chlorophyll content of leaves in relation to dry weight.”
t0“GIBBERELLIC ACID ON GROWTH OF ANTIRRHINUM MAJUS”
Claim · model-written summary
GA3 reduced leaf chlorophyll content relative to dry weight.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- GIBBERELLIC ACIDt0
- Outcome
- chlorophyll content of leaves in relation to dry weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment hindered root development and reduced chlorophyll content of leaves in relation to dry weight.”
t0“GIBBERELLIC ACID ON GROWTH OF ANTIRRHINUM MAJUS”
Claim · model-written summary
At each GA3 level, 0.09% CO2 gave longer inflorescences, taller plants, more top fresh weight and chlorophyll than 0.03% CO2.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- 0.09% CO 2e0
- Outcome
- longer inflorescences, were taller, had greater fresh weight and more chlorophylle0
- Direction
- greatere0
- Comparator
- 0.03% CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown in an atmosphere containing 0.09% CO 2 had longer inflorescences, were taller, had greater fresh weight and more chlorophyll at each level of treatment with GA 3 than such plants grown in an atmosphere containing 0.03% CO 2 .”
t0“ANTIRRHINUM MAJUS”
Claim · model-written summary
The CO2 height difference was significant in controls.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- 0.09% CO 2e1
- Outcome
- total heighte0
- Direction
- tallere1
- Qualifier
- controle0
- Comparator
- 0.03% CO 2e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these comparisons were considered significant only for total height (control) and fresh weight of tops (0, 10 and 50 μg/ml GA 3 ).”
e1“Plants grown in an atmosphere containing 0.09% CO 2 had longer inflorescences, were taller, had greater fresh weight and more chlorophyll at each level of treatment with GA 3 than such plants grown in an atmosphere containing 0.03% CO 2 .”
t0“ANTIRRHINUM MAJUS”
Claim · model-written summary
The CO2 top fresh-weight difference was significant at 0, 10 and 50 μg/ml GA3.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- 0.09% CO 2e1
- Outcome
- fresh weight of topse0
- Direction
- greatere1
- Qualifier
- 0, 10 and 50 μg/ml GA 3e0
- Comparator
- 0.03% CO 2e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these comparisons were considered significant only for total height (control) and fresh weight of tops (0, 10 and 50 μg/ml GA 3 ).”
e1“Plants grown in an atmosphere containing 0.09% CO 2 had longer inflorescences, were taller, had greater fresh weight and more chlorophyll at each level of treatment with GA 3 than such plants grown in an atmosphere containing 0.03% CO 2 .”
t0“ANTIRRHINUM MAJUS”
Claim · model-written summary
GA3 at 10 μg/ml reduced root length proportionally at both CO2 levels.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- GA 3 at 10 μg/mle0
- Outcome
- length of rootse0
- Direction
- reducede0
- Qualifier
- both levels of CO 2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 3 at 10 μg/ml reduced length of roots proportionally in both levels of CO 2”
t0“ANTIRRHINUM MAJUS”
Claim · model-written summary
Higher GA3 concentrations significantly reduced root length only at higher CO2.
- Taxon
- ANTIRRHINUM MAJUSAntirrhinum majust0
- Treatment
- higher concentrations of GA 3e0
- Outcome
- length of rootse1
- Direction
- reductione0
- Qualifier
- only under the higher level of CO 2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentrations of GA 3 continued to give significant reduction only under the higher level of CO 2 .”
e1“GA 3 at 10 μg/ml reduced length of roots proportionally”
t0“ANTIRRHINUM MAJUS”
The same questions in other papers
Gibberellic acid · growth · Antirrhinum majus (snapdragon)Positive and negative results
2 in the opposite direction
- positive
- positive
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.