Abstract
Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings. Indolylacetic acid usually had a contrary effect both on extension and on root initiation. It was found possible to separate the effects of gibberellic acid on extension and rooting. Small doses of gibberellic acid applied to the bases of cuttings reduced rooting without increasing extension. Small apical doses increased extension without reducing rooting. Disbudding cuttings prevented extension, but gibberellic acid inhibited rooting of disbudded cuttings as strongly as that of normal cuttings. It has thus been found necessary to discard an earlier hypothesis that inhibition of rooting by gibberellic acid was a consequence of a diversion of essential metabolites to the extending apical regions of the cutting. The antagonism between gibberellic acid and indolylacetic acid was non-competitive. Gibberellin A1, known to occur naturally in Phaseolus, was as active a rooting inhibitor as gibberellic acid. It is now believed that inhibition of rooting of cuttings by gibberellins is a direct local effect, preventing those early cell divisions involved in transformation of mature stem tissues to a meristematic condition.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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 15
Claim · model-written summary
Gibberellic acid inhibited rooting of pea cuttings.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- Gibberellic acide0
- Outcome
- rootinge0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Gibberellic acid inhibited rooting of bean cuttings.
Not reportedComparator
Verbatim
e0“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Gibberellic acid increased extension of pea cuttings.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- Gibberellic acide0
- Outcome
- extensione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Gibberellic acid increased extension of bean cuttings.
Not reportedComparator
Verbatim
e0“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Indolylacetic acid usually had the opposite effect on extension.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- Indolylacetic acide0
- Outcome
- extensione0
- Direction
- contrary effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indolylacetic acid usually had a contrary effect both on extension and on root initiation.”
t0“Rooting of Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Indolylacetic acid usually had the opposite effect on root initiation.
Not reportedComparator
Verbatim
e0“Indolylacetic acid usually had a contrary effect both on extension and on root initiation.”
t0“Rooting of Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Small basal gibberellic acid doses reduced rooting without increasing extension.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- Small doses of gibberellic acid applied to the bases of cuttingse0
- Outcome
- rootinge0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small doses of gibberellic acid applied to the bases of cuttings reduced rooting without increasing extension.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Small basal gibberellic acid doses did not increase extension.
- Taxon
- beane1
- Treatment
- Small doses of gibberellic acid applied to the bases of cuttingse0
- Outcome
- extensione0
- Direction
- without increasinge0
Not reportedComparator
Verbatim
e0“Small doses of gibberellic acid applied to the bases of cuttings reduced rooting without increasing extension.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Small apical gibberellic acid doses increased extension.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- Small apical dosese0
- Outcome
- extensione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Small apical doses increased extension without reducing rooting.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Small apical doses did not reduce rooting.
Not reportedComparator
Verbatim
e0“Small apical doses increased extension without reducing rooting.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Disbudding prevented cutting extension.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- Disbuddinge0
- Outcome
- extensione0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disbudding cuttings prevented extension”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Gibberellic acid inhibited rooting of disbudded cuttings as strongly as normal cuttings.
Verbatim
e0“gibberellic acid inhibited rooting of disbudded cuttings as strongly as that of normal cuttings.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
The gibberellic acid and indolylacetic acid antagonism was noncompetitive.
- Taxon
- peaLathyrus oleraceuse1
- Outcome
- antagonism between gibberellic acid and indolylacetic acid was non-competitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antagonism between gibberellic acid and indolylacetic acid was non-competitive.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
Claim · model-written summary
Gibberellin A1 inhibited rooting as strongly as gibberellic acid.
PhaseolusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellin A1, known to occur naturally in Phaseolus, was as active a rooting inhibitor as gibberellic acid.”
Claim · model-written summary
The authors propose that gibberellins directly inhibit early cell divisions needed for stem tissue to become meristematic.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- gibberellinse0
- Outcome
- inhibition of rooting of cuttingse0
- Qualifier
- preventing those early cell divisions involved in transformation of mature stem tissues to a meristematic conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibition of rooting of cuttings by gibberellins is a direct local effect, preventing those early cell divisions involved in transformation of mature stem tissues to a meristematic condition.”
t0“Cuttings”
e1“Gibberellic acid inhibited rooting but increased extension of pea and bean stem cuttings.”
The same questions in other papers
Gibberellic acid · growth · Phaseolus vulgaris (common bean)Results differ
2 papers in the same direction as this paper · 27 in the opposite direction
- positive
- positive
- positive
26 papers more in this group
See all 30 papers →Gibberellic acid · growth · Lathyrus oleraceus (pea)Results differ
6 papers in the same direction as this paper · 34 in the opposite direction
- positive
- positive
- positive
37 papers more in this group
See all 41 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.