Abstract
A study was performed on the effect of various concentrations of IAA, 2,3,5. triiodobenzoic acid, and maleic hydrazide, supplied to Richter's nutrient solution, on growth of pea plants in water cultures. After a 18-day cultivation growth was evaluated and in the plants gathered the content of total N, P, K, and Ca was estimated. Growth of experimental plants (as evaluated from fresh and dry weight) was affected by all three regulators in dependence on the concentration used. It was stimulated by lower con- eentratious and inhibited by higher, the production of both fresh and dry weight of the root system being stimulated by all IAA concentrations used. The ratio of root dry weight to that of the entire plant was markedly increased after ap- plication of IAA and 2,3,5-triiodobenzoie acid, whereas when applying maleie hydrazide it was only slightly increased in comparison with control. Stimulation or inhibition of growth induced by IAA treatment was accompanied by an accordingly increased or decreased accumulation of N, P, K, and Ca. Thus their utilization did not change in comparison with control. On the other hand, both inhibitory and stimulatory effects of 2,3,5-triiodobenzoie acid and maleie hydrazide on growth were associated with a rela- tively lower accumulation of the elements in question, resulting in an increased utilization. The distribution index of N, P, K, and Ca decreased with increasing concentrations of IAA, 2,3,5-triiodobenzoic acid and maleic hydrazide. Only the highest 2,3,5-triiodobenzoic acid and maleic hydrazide concentrations used brought about a more marked increase in the distribution index of potassium, simultaneously with a marked decrease in the distribution index of calcium.
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Claims 11
Claim · model-written summary
Growth of pea plants in water culture was affected by IAA, 2,3,5-triiodobenzoic acid and maleic hydrazide depending on concentration: stimulated by lower and inhibited by higher concentrations.
- Taxon
- pea plants
Lathyrus oleraceuse0 - Treatment
- IAA, 2,3,5. triiodobenzoic acid, and maleic hydrazidee0
- Outcome
- growthe0
- Direction
- stimulated by lower con- eentratious and inhibited by highere1
- Setting
- water culturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various concentrations of IAA, 2,3,5. triiodobenzoic acid, and maleic hydrazide, supplied to Richter's nutrient solution, on growth of pea plants in water cultures”
e1“It was stimulated by lower con- eentratious and inhibited by higher”
Claim · model-written summary
IAA at all concentrations used stimulated fresh and dry weight production of the pea root system.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- IAA concentrationse0
- Outcome
- fresh and dry weight of the root systeme0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“the production of both fresh and dry weight of the root system being stimulated by all IAA concentrations used”
Claim · model-written summary
The ratio of root dry weight to whole-plant dry weight of pea markedly increased after application of IAA and 2,3,5-triiodobenzoic acid.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- IAA and 2,3,5-triiodobenzoie acide0
- Outcome
- ratio of root dry weight to that of the entire plante0
- Direction
- markedly increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“The ratio of root dry weight to that of the entire plant was markedly increased after ap- plication of IAA and 2,3,5-triiodobenzoie acid”
Claim · model-written summary
With maleic hydrazide the ratio of root dry weight to whole-plant dry weight of pea was only slightly increased compared with control.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- maleie hydrazidee1
- Outcome
- ratio of root dry weight to that of the entire plante0
- Direction
- slightly increasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“The ratio of root dry weight to that of the entire plant”
e1“whereas when applying maleie hydrazide it was only slightly increased in comparison with control”
Claim · model-written summary
Growth stimulation or inhibition by IAA treatment was accompanied by correspondingly increased or decreased accumulation of N, P, K and Ca in pea.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- IAA treatmente0
- Outcome
- accumulation of N, P, K, and Cae0
- Direction
- increased or decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“Stimulation or inhibition of growth induced by IAA treatment was accompanied by an accordingly increased or decreased accumulation of N, P, K, and Ca”
Claim · model-written summary
Utilization of N, P, K and Ca under IAA treatment did not change compared with control.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- IAA treatmente0
- Outcome
- utilizatione1
- Direction
- did not changee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“induced by IAA treatment”
e1“their utilization did not change in comparison with control”
Claim · model-written summary
Both inhibitory and stimulatory effects of 2,3,5-triiodobenzoic acid and maleic hydrazide on growth were associated with relatively lower accumulation of N, P, K and Ca.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- 2,3,5-triiodobenzoie acid and maleie hydrazidee0
- Outcome
- accumulation of the elements in questione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“both inhibitory and stimulatory effects of 2,3,5-triiodobenzoie acid and maleie hydrazide on growth were associated with a rela- tively lower accumulation of the elements in question”
Claim · model-written summary
Utilization of the elements increased under 2,3,5-triiodobenzoic acid and maleic hydrazide.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- 2,3,5-triiodobenzoie acid and maleie hydrazidee0
- Outcome
- utilizatione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“both inhibitory and stimulatory effects of 2,3,5-triiodobenzoie acid and maleie hydrazide on growth”
e1“resulting in an increased utilization”
Claim · model-written summary
The distribution index of N, P, K and Ca decreased with increasing concentrations of IAA, 2,3,5-triiodobenzoic acid and maleic hydrazide.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- IAA, 2,3,5-triiodobenzoic acid and maleic hydrazidee0
- Outcome
- distribution index of N, P, K, and Cae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“The distribution index of N, P, K, and Ca decreased with increasing concentrations of IAA, 2,3,5-triiodobenzoic acid and maleic hydrazide”
Claim · model-written summary
Only the highest concentrations of 2,3,5-triiodobenzoic acid and maleic hydrazide produced a more marked increase in the distribution index of potassium.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- highest 2,3,5-triiodobenzoic acid and maleic hydrazide concentrationse0
- Outcome
- distribution index of potassiume1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“Only the highest 2,3,5-triiodobenzoic acid and maleic hydrazide concentrations used”
e1“a more marked increase in the distribution index of potassium”
Claim · model-written summary
The highest concentrations of 2,3,5-triiodobenzoic acid and maleic hydrazide produced a marked decrease in the distribution index of calcium.
- Taxon
- Pea PlantsLathyrus oleraceust0
- Treatment
- highest 2,3,5-triiodobenzoic acid and maleic hydrazide concentrationse0
- Outcome
- distribution index of calciume1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea Plants”
e0“Only the highest 2,3,5-triiodobenzoic acid and maleic hydrazide concentrations used”
e1“a marked decrease in the distribution index of calcium”
The same questions in other papers
indole-3-acetic acid · growth · Lathyrus oleraceus (pea)Results differ
32 papers in the same direction as this paper · 14 in the opposite direction
- no effect
- negative
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See all 5 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.