Abstract
Indol‐3yl‐acetic acid (IAA) present in the rooting solution for 1–4 days appreciably decreased the number of roots subsequently formed in pea stem cuttings. Removal of the lowest 10 mm of the cutting base after IAA treatment abolished the inhibitory effect of IAA almost completely. The number of roots formed from the remaining part of the base internode after excision of the basal centimeter of the internode 4 days after the cuttings were taken was similar to that of the control. It is concluded that the first root primordia, which develop near the cut surface, have an inhibitory influence on development of further roots. The inhibitory effect of IAA may be explained as a strengthening of this dominance phenomenon. Addition of charcoal to the rooting solution delayed the appearance of roots but increased the number of roots developed during a standard rooting period. Adsorption of stimulatory and inhibitory compounds at the surface of the cutting base is believed to be the reason for these results as no evidence of accumulation of inhibitory compounds in the solution was obtained. Charcoal reversed the inhibitory effect of IAA if added after the IAA treatment. This reversal was almost complete if the IAA treatment lasted for one day only but decreased drastically if the IAA treatment was extended over 4 days.
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Claims 12
Claim · model-written summary
IAA for one to four days decreased the number of roots in pea stem cuttings.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- Indol‐3yl‐acetic acid (IAA) present in the rooting solution for 1–4 dayse0
- Outcome
- number of roots subsequently formede0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indol‐3yl‐acetic acid (IAA) present in the rooting solution for 1–4 days appreciably decreased the number of roots subsequently formed in pea stem cuttings”
Claim · model-written summary
Removing the lowest 10 mm after IAA nearly abolished its inhibition.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Removal of the lowest 10 mm of the cutting basee0
- Outcome
- inhibitory effect of IAAe0
- Direction
- abolishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of the lowest 10 mm of the cutting base after IAA treatment abolished the inhibitory effect of IAA almost completely”
t0“pea cuttings”
Claim · model-written summary
After basal centimeter excision at day four, root number was similar to control.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- excision of the basal centimeter of the internode 4 days after the cuttings were takene0
- Outcome
- number of roots formede0
- Direction
- similare0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of roots formed from the remaining part of the base internode after excision of the basal centimeter of the internode 4 days after the cuttings were taken was similar to that of the control”
t0“pea cuttings”
Claim · model-written summary
The first root primordia are interpreted to inhibit further root development.
- Taxon
- peaLathyrus oleraceust0
- Organ / stage
- first root primordiae0
- Outcome
- development of further rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the first root primordia, which develop near the cut surface, have an inhibitory influence on development of further roots”
t0“pea cuttings”
Claim · model-written summary
IAA inhibition may strengthen root primordia dominance.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- IAAe0
- Outcome
- inhibitory effect of IAAe0
- Qualifier
- strengthening of this dominance phenomenone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effect of IAA may be explained as a strengthening of this dominance phenomenon”
t0“pea cuttings”
Claim · model-written summary
Charcoal delayed root appearance.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Addition of charcoal to the rooting solutione0
- Outcome
- appearance of rootse0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of charcoal to the rooting solution delayed the appearance of roots”
t0“pea cuttings”
Claim · model-written summary
Charcoal increased roots developed during the standard rooting period.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- charcoale0
- Outcome
- number of roots developede0
- Direction
- increasede0
- Qualifier
- standard rooting periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of charcoal to the rooting solution delayed the appearance of roots but increased the number of roots developed during a standard rooting period”
t0“pea cuttings”
Claim · model-written summary
The authors attribute charcoal effects to surface adsorption.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- these resultse0
- Qualifier
- Adsorption of stimulatory and inhibitory compounds at the surface of the cutting basee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adsorption of stimulatory and inhibitory compounds at the surface of the cutting base is believed to be the reason for these results”
t0“pea cuttings”
Claim · model-written summary
No accumulation of inhibitory compounds in solution was found.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- no evidence of accumulation of inhibitory compounds in the solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no evidence of accumulation of inhibitory compounds in the solution was obtained”
t0“pea cuttings”
Claim · model-written summary
Charcoal after IAA treatment reversed IAA inhibition.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Charcoale0
- Outcome
- inhibitory effect of IAAe0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Charcoal reversed the inhibitory effect of IAA if added after the IAA treatment”
t0“pea cuttings”
Claim · model-written summary
Charcoal reversal was nearly complete after one day of IAA treatment.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- IAA treatment lasted for one day onlye0
- Outcome
- reversale0
- Direction
- almost completee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reversal was almost complete if the IAA treatment lasted for one day only”
t0“pea cuttings”
Claim · model-written summary
Charcoal reversal decreased drastically after four days of IAA treatment.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- IAA treatment was extended over 4 dayse0
- Outcome
- reversale0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reversal was almost complete if the IAA treatment lasted for one day only but decreased drastically if the IAA treatment was extended over 4 days”
t0“pea cuttings”
The same questions in other papers
indole-3-acetic acid · growth · Lathyrus oleraceus (pea)Results differ
13 papers in the same direction as this paper · 33 in the opposite direction
- positive
- positive
- negative
43 papers more in this group
See all 47 papers →charcoal · growth · Lathyrus oleraceus (pea)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →pruning · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- negative
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.