Abstract
Antonovka seedlings were obtained from the embryos soaked in abscisic acid (ABA) alone, gibberellin A4+7, benzyladenine or the mixtures of these regulators. The inhibitory effect of ABA on the growth of the seedlings was of temporary duration. The height of the 12 week-old seedlings was dependent only on the degree of seed after-ripening and not on the ABA treatment. The growth stimulators studied were unable to overcome the inhibitory effect of ABA observed in the early stages of seedling growth. The growth stimulators did not substitute, for cold treatment of apple seeds which is the only treatment so far known to overcome the dwarf conditions of the seedlings obtained from non-after-ripened embryos. ABA greatly suppressed the early stages of apple seedling growth (up to 6 weeks) during which they resembled physiological dwarfs. The highest concentrations of ABA (2·0 μg ml−1) greatly modified the root system of the seedlings, and produced a larger percentage of seedlings with unbranched roots.
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Claims 8
Claim · model-written summary
The inhibitory effect of ABA on apple seedling growth was of temporary duration.
- Taxon
- apple seedlings
Malus domesticat0 - Treatment
- ABAe0
- Outcome
- growth of the seedlingse0
- Direction
- inhibitory effecte0
- Qualifier
- temporary duratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effect of ABA on the growth of the seedlings was of temporary duration”
t0“apple seedlings”
Claim · model-written summary
The height of 12-week-old seedlings did not depend on the ABA treatment.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- ABA treatmente0
- Outcome
- height of the 12 week-old seedlingse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The height of the 12 week-old seedlings was dependent only on the degree of seed after-ripening and not on the ABA treatment”
t0“apple seedlings”
Claim · model-written summary
The height of 12-week-old seedlings depended on the degree of seed after-ripening.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- degree of seed after-ripeninge0
- Outcome
- height of the 12 week-old seedlingse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The height of the 12 week-old seedlings was dependent only on the degree of seed after-ripening and not on the ABA treatment”
t0“apple seedlings”
Claim · model-written summary
The growth stimulators tested were unable to overcome the early inhibitory effect of ABA on seedling growth.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- growth stimulatorse0
- Outcome
- inhibitory effect of ABAe0
- Direction
- unable to overcomee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth stimulators studied were unable to overcome the inhibitory effect of ABA observed in the early stages of seedling growth”
t0“apple seedlings”
Claim · model-written summary
The growth stimulators did not substitute for cold treatment of seeds in overcoming dwarf conditions of seedlings from non-after-ripened embryos.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- growth stimulatorse0
- Outcome
- dwarf conditionse0
- Direction
- did not substitutee0
- Comparator
- cold treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth stimulators did not substitute, for cold treatment of apple seeds which is the only treatment so far known to overcome the dwarf conditions of the seedlings obtained from non-after-ripened embryos”
t0“apple seedlings”
Claim · model-written summary
ABA greatly suppressed early apple seedling growth, up to 6 weeks, when seedlings resembled physiological dwarfs.
- Taxon
- apple seedlingMalus domesticae0
- Treatment
- ABAe0
- Outcome
- early stages of apple seedling growthe0
- Direction
- suppressede0
- Qualifier
- up to 6 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA greatly suppressed the early stages of apple seedling growth (up to 6 weeks)”
Claim · model-written summary
The highest ABA concentration (2.0 ug/ml) greatly modified the seedling root system.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- highest concentrations of ABA (2·0 μg ml−1)e0
- Outcome
- root system of the seedlingse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentrations of ABA (2·0 μg ml−1) greatly modified the root system of the seedlings”
t0“apple seedlings”
Claim · model-written summary
The highest ABA concentration produced a larger percentage of seedlings with unbranched roots.
- Taxon
- apple seedlingsMalus domesticat0
- Treatment
- highest concentrations of ABA (2·0 μg ml−1)e0
- Outcome
- percentage of seedlings with unbranched rootse0
- Direction
- largere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentrations of ABA (2·0 μg ml−1) greatly modified the root system of the seedlings, and produced a larger percentage of seedlings with unbranched roots”
t0“apple seedlings”
The same questions in other papers
(+)-abscisic acid · growth · Malus domestica (apple)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.