Abstract
1. The influence of varying concentrations of gibberellic acid on seedlings of wheat, lettuce and oats (up 10 days old) was observed and optimal concentration of 10 to 100 μg GA/ml. was established. Biometric evaluation of the experiments showed significant stimulation of the overground parts with all concentrations used (0.1 to 100 μg. GA/ml.) and significant inhibition of bhe roots with concentrations 1 to 100 μg. GA/ml. 2. For lettuce only the concentration 10 μg. GA/ml. was used. In this case, too, increase in length of overground parts was significant and inhibition of root growth was observed. For oats the stimulating effect of GA was recorded for both overground parts and roots. 3. Fresh weight of wheat was stimulated only by concentrations of 100 μg. GA/ml. In the case of lettuce (where values of fresh and dry weight were taken for the whole plant) we found a marked stimulation of fresh weight and a somewhat smaller increase in dry weight. 4. Observation of the dynamics of growth in length of overground parts and roots and increase or fresh and dry weight in lettuce showed a mutual relation between the values recorded in control and experimental plants in the period of 4 to 10 days following germination.
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Claims 9
Claim · model-written summary
Gibberellic acid significantly stimulated wheat overground parts across the tested concentrations.
Not reportedTaxonComparator
Verbatim
e0“Biometric evaluation of the experiments showed significant stimulation of the overground parts with all concentrations used (0.1 to 100 μg. GA/ml.) and significant inhibition of bhe roots with concentrations 1 to 100 μg. GA/ml.”
Claim · model-written summary
Gibberellic acid significantly inhibited wheat roots at 1 to 100 μg/ml.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- 1 to 100 μg. GA/ml.e0
- Outcome
- bhe rootse0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant inhibition of bhe roots with concentrations 1 to 100 μg. GA/ml.”
t0“Wheat”
Claim · model-written summary
Lettuce overground parts significantly lengthened at 10 μg/ml.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- 10 μg. GA/ml.e0
- Outcome
- length of overground partse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For lettuce only the concentration 10 μg. GA/ml. was used. In this case, too, increase in length of overground parts was significant and inhibition of root growth was observed.”
Claim · model-written summary
Lettuce root growth was inhibited at 10 μg/ml.
- Taxon
- lettuceLactuca sativae0
- Treatment
- 10 μg. GA/ml.e0
- Outcome
- root growthe0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For lettuce only the concentration 10 μg. GA/ml. was used. In this case, too, increase in length of overground parts was significant and inhibition of root growth was observed.”
Claim · model-written summary
Gibberellic acid stimulated oat overground parts and roots.
- Taxon
- oats
Avena sativae0 - Treatment
- GAe0
- Outcome
- overground parts and rootse0
- Direction
- stimulatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For oats the stimulating effect of GA was recorded for both overground parts and roots.”
Claim · model-written summary
Wheat fresh weight was stimulated only at 100 μg/ml.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 100 μg. GA/ml.e0
- Outcome
- Fresh weighte0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh weight of wheat was stimulated only by concentrations of 100 μg. GA/ml.”
Claim · model-written summary
Lettuce fresh weight was markedly stimulated.
- Taxon
- lettuceLactuca sativae0
- Outcome
- fresh weighte0
- Direction
- stimulatione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of lettuce (where values of fresh and dry weight were taken for the whole plant) we found a marked stimulation of fresh weight and a somewhat smaller increase in dry weight.”
Claim · model-written summary
Lettuce dry weight increased somewhat less than fresh weight.
- Taxon
- lettuceLactuca sativae0
- Outcome
- dry weighte0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of lettuce (where values of fresh and dry weight were taken for the whole plant) we found a marked stimulation of fresh weight and a somewhat smaller increase in dry weight.”
Claim · model-written summary
Lettuce growth length and weight measures showed a relation between control and treated plants from four to ten days after germination.
- Taxon
- lettuceLactuca sativae0
- Outcome
- growth in length of overground parts and rootse0
- Qualifier
- 4 to 10 days following germinatione0
- Comparator
- control and experimental plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Observation of the dynamics of growth in length of overground parts and roots and increase or fresh and dry weight in lettuce showed a mutual relation between the values recorded in control and experimental plants in the period of 4 to 10 days following germination.”
The same questions in other papers
Gibberellic acid · growth · Lactuca sativa (garden lettuce)Results differ
8 papers in the same direction as this paper · 36 in the opposite direction
- positive
- positive
- positive
41 papers more in this group
See all 45 papers →Gibberellic acid · growth · Triticum aestivum (wheat)Results differ
53 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- negative
- no effect
63 papers more in this group
See all 67 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.