Abstract
The length of the auxin‐sensitive phase of root initiation ‘in vitro’ in the apple rootstock M.9 ( Malus pumila Mill.) has been determined using the auxins indol‐3yl‐acettc acid (IAA) at 2.8 × 10 −5 M and indol‐3yl‐butyric acid (IBA) at 1.5 × 10 −5 M in the presence and absence of 10 −3 M phloroglucinol (PG). PG synergised IBA‐induced rooting after 4 days exposure, but contact times exceeding 8 days decreased root number. In contrast, PG consistently synergised IAA‐induced rooting in the dark for contact periods up to 13 days with the highest rooting being recorded at 9 days. An irradiance of 20 W m −2 from fluorescent lamps halved IAA‐induced rooting irrespective of the presence or absence of PG. The culture of shoots at temperatures of 22,25 and 29°C during the root initiation phase (auxin present) and the root emergence phase (auxin absent) produced no difference in rooting response. In the presence of PG the use of liquid culture in place of agar‐solidified culture during the auxin‐sensitive phase reduced root number but not rooting percentage.
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Claims 7
Claim · model-written summary
Phloroglucinol enhanced IBA-induced rooting after four days of exposure.
- Taxon
- apple
Malus domesticae1 - Material
- M.9e1
- Treatment
- PGe0
- Outcome
- IBA‐induced rootinge0
- Direction
- synergisede0
- Qualifier
- after 4 days exposuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PG synergised IBA‐induced rooting after 4 days exposure”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
Phloroglucinol contact beyond eight days reduced root number under IBA-induced rooting.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- contact times exceeding 8 dayse0
- Outcome
- root numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PG synergised IBA‐induced rooting after 4 days exposure, but contact times exceeding 8 days decreased root number.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
Phloroglucinol enhanced IAA-induced rooting in darkness for contact up to 13 days, with the highest rooting at nine days.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- PGe0
- Outcome
- IAA‐induced rootinge0
- Direction
- synergisede0
- Qualifier
- in the dark for contact periods up to 13 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PG consistently synergised IAA‐induced rooting in the dark for contact periods up to 13 days with the highest rooting being recorded at 9 days.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
Fluorescent irradiance halved IAA-induced rooting regardless of phloroglucinol.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- 20 W m −2 from fluorescent lampse0
- Outcome
- IAA‐induced rootinge0
- Direction
- halvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An irradiance of 20 W m −2 from fluorescent lamps halved IAA‐induced rooting irrespective of the presence or absence of PG.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
Culture at 22, 25 and 29°C produced no difference in rooting response.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- temperatures of 22,25 and 29°Ce0
- Outcome
- rooting responsee0
- Direction
- no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The culture of shoots at temperatures of 22,25 and 29°C during the root initiation phase (auxin present) and the root emergence phase (auxin absent) produced no difference in rooting response.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
With phloroglucinol, liquid culture reduced root number relative to agar-solidified culture.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- liquid culturee0
- Outcome
- root numbere0
- Direction
- reducede0
- Qualifier
- In the presence of PGe0
- Comparator
- agar‐solidified culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of PG the use of liquid culture in place of agar‐solidified culture during the auxin‐sensitive phase reduced root number but not rooting percentage.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
Claim · model-written summary
With phloroglucinol, liquid culture did not reduce rooting percentage relative to agar-solidified culture.
- Taxon
- appleMalus domesticae1
- Material
- M.9e1
- Treatment
- liquid culturee0
- Outcome
- rooting percentagee0
- Direction
- note0
- Qualifier
- In the presence of PGe0
- Comparator
- agar‐solidified culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of PG the use of liquid culture in place of agar‐solidified culture during the auxin‐sensitive phase reduced root number but not rooting percentage.”
e1“the apple rootstock M.9 ( Malus pumila Mill.)”
The same questions in other papers
phloroglucinol · growth · Malus domestica (apple)Results differ
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
2 papers more in this group
See all 6 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.