Abstract
In all plant species tested, increasing concentrations of phytohormones produced responses falling on a physiologic curve from minimum through optimum to maximum which, if exceeded, led to injury and death. Indolyl-acetic acid, its butyric and propionic homologues, naphthylacetic acid, their salts, and mixtures gave similar results. Treating seeds with hormones incorporated in adsorbent dust stimulated both root and top growth markedly, with less danger of overdosage than in solution treatment. Dosages equivalent to 50 to 250 mg. per acre applied as dilute solutions to soil growing young lettuce and tomato plants covered the optimum range of stimulation to growth. Dust treatment of cuttings proved very convenient and successful in inducing rooting, the plants again showing a wider range of tolerance to dusts than to solutions. Fermentation of sugar by yeast responded to hormone stimulation. Various practical applications are discussed.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Increasing phytohormone concentrations produced a response curve from minimum to optimum to maximum and then injury and death in tested plant species.
- Taxon
- plant speciese0
- Treatment
- increasing concentrations of phytohormonese0
- Outcome
- responses falling on a physiologic curvee0
- Direction
- from minimum through optimum to maximume0
- Qualifier
- if exceeded, led to injury and deathe0
Not reportedComparator
Verbatim
e0“In all plant species tested, increasing concentrations of phytohormones produced responses falling on a physiologic curve from minimum through optimum to maximum which, if exceeded, led to injury and death”
Claim · model-written summary
Indolyl-acetic acid and the listed homologues, salts, and mixtures gave similar responses.
- Taxon
- PLANTSViridiplantaet0
- Treatment
- Indolyl-acetic acid, its butyric and propionic homologues, naphthylacetic acid, their salts, and mixturese0
- Outcome
- similar resultse0
Verbatim
e0“Indolyl-acetic acid, its butyric and propionic homologues, naphthylacetic acid, their salts, and mixtures gave similar results”
t0“SEEDS, GROWING PLANTS, CUTTINGS, AND LOWER PLANT FORMS”
Claim · model-written summary
Hormone dust treatment stimulated seed root and top growth with less overdosage risk than solution treatment.
Verbatim
e0“Treating seeds with hormones incorporated in adsorbent dust stimulated both root and top growth markedly, with less danger of overdosage than in solution treatment”
t0“SEEDS, GROWING PLANTS, CUTTINGS, AND LOWER PLANT FORMS”
Claim · model-written summary
Hormone solution doses of 50 to 250 mg per acre were optimal for growth stimulation in young lettuce and tomato.
- Taxon
- lettuce and tomato plants
Solanum lycopersicum
Lactuca sativae0 - Organ / stage
- younge0
- Treatment
- 50 to 250 mg. per acre applied as dilute solutions to soile0
- Outcome
- stimulation to growthe0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dosages equivalent to 50 to 250 mg. per acre applied as dilute solutions to soil growing young lettuce and tomato plants covered the optimum range of stimulation to growth”
Claim · model-written summary
Dust treatment induced rooting in cuttings and offered wider tolerance than solution treatment.
Verbatim
e0“Dust treatment of cuttings proved very convenient and successful in inducing rooting, the plants again showing a wider range of tolerance to dusts than to solutions”
The same questions in other papers
class · growth · Viridiplantae (plants)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
3 papers more in this group
See all 7 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.