Abstract
Gibberellic acid (GA2), kinetin, and indole-3yl-acetic acid (IAA) each at four concentrations (0, 0.5, 5, and 50 μM) were applied alone and in all possible combinations to roots of Phaseolus vulgaris L. grown under four different light regimes (7000, 14 000, 21 000, and 28 000 lx). GA3 increased growth of main stem and laterals but reduced apical dominance, especially in the absence of, or at low kinetin concentrations. A high level of kinetin lowered GA3 induced growth of main stems and, to a lesser extent, laterals. Kinetin greatly reduced apical dominance, especially in the absence of, or at low GA3 concentrations. IAA slightly reduced growth of main stems and laterals and slightly increased apical dominance. Generally the magnitude of the IAA effects were less than those of GA3 or kinetin and there were less interaction between IAA and other factors than between GA3 or kinetin and other factors. Light affected growth of both main stem and laterals but the effect was dependent on GA3 and kinetin levels and the interactions were complex. Generally a hormone balance seems to be operative with gibberellin-promoting growth of main stem and laterals and cytokinins and possibly auxins preventing excessive elongation. Differential responses between main stem and lateral may be due to different local hormone concentrations and over-all responses may be tempered by light intensity.
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Claims 10
Claim · model-written summary
GA3 increased growth of the main stem and laterals.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarist0 - Treatment
- GA3e0
- Outcome
- growth of main stem and lateralse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 increased growth of main stem and laterals but reduced apical dominance, especially in the absence of, or at low kinetin concentrations.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
GA3 reduced apical dominance, especially with absent or low kinetin.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- GA3e0
- Outcome
- apical dominancee0
- Direction
- reducede0
- Qualifier
- especially in the absence of, or at low kinetin concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 increased growth of main stem and laterals but reduced apical dominance, especially in the absence of, or at low kinetin concentrations.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
High kinetin lowered GA3-induced main-stem growth and, to a lesser extent, lateral growth.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- A high level of kinetine0
- Outcome
- GA3 induced growth of main stemse0
- Direction
- lowerede0
- Qualifier
- to a lesser extent, lateralse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A high level of kinetin lowered GA3 induced growth of main stems and, to a lesser extent, laterals.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Kinetin greatly reduced apical dominance, especially without or at low GA3.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Kinetine0
- Outcome
- apical dominancee0
- Direction
- reducede0
- Qualifier
- especially in the absence of, or at low GA3 concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kinetin greatly reduced apical dominance, especially in the absence of, or at low GA3 concentrations.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
IAA slightly reduced main-stem and lateral growth.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- IAAe0
- Outcome
- growth of main stems and lateralse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAA slightly reduced growth of main stems and laterals and slightly increased apical dominance.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
IAA slightly increased apical dominance.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- IAAe0
- Outcome
- apical dominancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAA slightly reduced growth of main stems and laterals and slightly increased apical dominance.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
IAA effects were generally smaller than those of GA3 or kinetin and showed fewer interactions with other factors.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Outcome
- magnitude of the IAA effectse0
- Direction
- lesse0
- Comparator
- GA3 or kinetine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally the magnitude of the IAA effects were less than those of GA3 or kinetin and there were less interaction between IAA and other factors than between GA3 or kinetin and other factors.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Light affected main-stem and lateral growth, depending on GA3 and kinetin levels.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- Lighte0
- Outcome
- growth of both main stem and lateralse0
- Qualifier
- dependent on GA3 and kinetin levelse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light affected growth of both main stem and laterals but the effect was dependent on GA3 and kinetin levels and the interactions were complex.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
The authors interpret growth as regulated by hormone balance, with gibberellin promoting growth and cytokinins and possibly auxins limiting elongation.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Compound
- gibberelline0
- Outcome
- growth of main stem and lateralse0
- Qualifier
- seems to be operativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally a hormone balance seems to be operative with gibberellin-promoting growth of main stem and laterals and cytokinins and possibly auxins preventing excessive elongation.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
The authors suggest local hormone concentrations may explain differential stem responses, tempered by light intensity.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Outcome
- Differential responses between main stem and laterale0
- Qualifier
- may be due to different local hormone concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differential responses between main stem and lateral may be due to different local hormone concentrations and over-all responses may be tempered by light intensity.”
t0“Phaseolus vulgaris L.”
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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.