Abstract
Abstract Gibberellic acid (GA 3 ) has little effect on fruit set in seeded commercial varieties of apple unless pollination is prevented. To determine whether seedless apples might respond to GA, blossoms of several apetalous clones were treated with gibberellins. In addition, seeded and seedless fruits were sprayed several weeks after bloom with naphthaleneacetic acid (NAA), a fruit-thinning agent, to ascertain the role of seeds in auxin-induced fruit abscission. GA 3 was effective in increasing fruit set in 2 of the 6 clones tested, but had no effect on the remaining 4, only one of which crops heavily under orchard conditions. GA 7 and GA 4+7 were more active than GA 3 in inducing fruit set in the 2 responsive clones. NAA thinned both seeded and seedless fruits of one clone. Fruit growth was inhibited in seedless fruits of 2 other clones, but abscission was not promoted. These results support the view that NAA-induced fruit abscission is not a result of seed abortion.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
GA3 increased fruit set in two of six tested clones.
- Taxon
- apple
Malus domesticat0 - Treatment
- GA 3e0
- Outcome
- fruit sete0
- Direction
- increasinge0
- Value
- 2 of the 6 clonese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 3 was effective in increasing fruit set in 2 of the 6 clones tested”
t0“apple”
Claim · model-written summary
GA3 had no effect on fruit set in the remaining four clones.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 3 was effective in increasing fruit set in 2 of the 6 clones tested, but had no effect on the remaining 4”
t0“apple”
Claim · model-written summary
GA7 induced more fruit set than GA3 in the two responsive clones.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 7 and GA 4+7 were more active than GA 3 in inducing fruit set in the 2 responsive clones”
t0“apple”
Claim · model-written summary
GA4+7 induced more fruit set than GA3 in the two responsive clones.
- Taxon
- appleMalus domesticat0
- Treatment
- GA 4+7e0
- Outcome
- fruit sete0
- Direction
- more activee0
- Comparator
- GA 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA 7 and GA 4+7 were more active than GA 3 in inducing fruit set in the 2 responsive clones”
t0“apple”
Claim · model-written summary
NAA thinned seeded fruits of one clone.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA thinned both seeded and seedless fruits of one clone”
t0“apple”
Claim · model-written summary
NAA thinned seedless fruits of one clone.
- Taxon
- appleMalus domesticat0
- Treatment
- NAAe0
- Outcome
- seedless fruitse0
- Direction
- thinnede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA thinned both seeded and seedless fruits of one clone”
t0“apple”
Claim · model-written summary
NAA inhibited fruit growth in seedless fruit of two other clones.
- Taxon
- appleMalus domesticat0
- Treatment
- naphthaleneacetic acid (NAA)e1
- Outcome
- Fruit growthe0
- Direction
- inhibitede0
- Value
- 2 other clonese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit growth was inhibited in seedless fruits of 2 other clones”
e1“seeded and seedless fruits were sprayed several weeks after bloom with naphthaleneacetic acid (NAA)”
t0“apple”
Claim · model-written summary
NAA did not promote abscission in seedless fruits of those two clones.
- Taxon
- appleMalus domesticat0
- Treatment
- naphthaleneacetic acid (NAA)e1
- Outcome
- abscissione0
- Direction
- not promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“abscission was not promoted”
e1“seeded and seedless fruits were sprayed several weeks after bloom with naphthaleneacetic acid (NAA)”
t0“apple”
Claim · model-written summary
The results support that NAA induced abscission is not caused by seed abortion.
- Taxon
- appleMalus domesticat0
- Outcome
- fruit abscissione0
- Qualifier
- not a result of seed abortione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA-induced fruit abscission is not a result of seed abortion”
t0“apple”
The same questions in other papers
1-naphthaleneacetic acid · growth · Malus domestica (apple)Results differ
11 papers in the same direction as this paper · 31 in the opposite direction
- positive
- positive
- positive
39 papers more in this group
See all 43 papers →1-naphthaleneacetic acid · yield · Malus domestica (apple)Results differ
14 papers in the same direction as this paper · 50 in the opposite direction
- positive
- positive
- positive
61 papers more in this group
See all 65 papers →Gibberellic acid · yield · Malus domestica (apple)Positive and negative results
15 papers in the same direction as this paper · 11 in the opposite direction
- positive
- no effect
- negative
23 papers more in this group
See all 27 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.