Abstract
Mutations of compact habit of growth were induced in selected apple varieties by acute irradiation with gamma rays from a Co 60 source at doses ranging from 3750 rad to 7500 rad. The rate of mutation was high. In trees of the McIntosh variety, repropagated from irradiated material, the percentage of total vegetative (tree or leaf) mutants was 9.8 and the percentage of compact mutants 5.2. The compact mutants were characterized by shortened internodes and reduced tree size. Various degrees of growth reduction were induced by the radiation treatment. Most of the compact mutants produced fruit of an undesirable shape, often flattened, irregular, and grooved. However, mutants were selected which combined the desirable compact growth habit with fruit that was characteristic of the variety.
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Claims 8
Claim · model-written summary
Gamma irradiation induced compact growth mutations in apple.
- Taxon
- apple
Malus domesticae0 - Treatment
- acute irradiation with gamma rays from a Co 60 source at doses ranging from 3750 rad to 7500 rade0
- Outcome
- Mutations of compact habit of growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mutations of compact habit of growth were induced in selected apple varieties by acute irradiation with gamma rays from a Co 60 source at doses ranging from 3750 rad to 7500 rad”
Claim · model-written summary
The mutation rate was high.
- Taxon
- appleMalus domesticat0
- Outcome
- rate of mutatione0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of mutation was high”
t0“APPLE”
t1“APPLE”
Claim · model-written summary
In repropagated McIntosh trees, total vegetative mutants were 9.8%.
- Taxon
- APPLEMalus domesticat0
- Material
- McIntoshe0
- Outcome
- percentage of total vegetative (tree or leaf) mutantse0
- Value
- 9.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In trees of the McIntosh variety, repropagated from irradiated material, the percentage of total vegetative (tree or leaf) mutants was 9.8”
t0“APPLE”
t1“APPLE”
Claim · model-written summary
In repropagated McIntosh trees, compact mutants were 5.2%.
- Taxon
- APPLEMalus domesticat0
- Material
- McIntoshe1
- Outcome
- percentage of compact mutantse0
- Value
- 5.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of compact mutants 5.2”
t0“APPLE”
t1“APPLE”
e1“In trees of the McIntosh variety, repropagated from irradiated material, the percentage of total vegetative (tree or leaf) mutants was 9.8”
Claim · model-written summary
Compact mutants had shortened internodes and reduced tree size.
- Taxon
- APPLEMalus domesticat0
- Material
- compact mutantse0
- Outcome
- shortened internodes and reduced tree sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The compact mutants were characterized by shortened internodes and reduced tree size”
t0“APPLE”
t1“APPLE”
Claim · model-written summary
Radiation induced varying degrees of growth reduction.
- Taxon
- APPLEMalus domesticat0
- Treatment
- radiation treatmente0
- Outcome
- growth reductione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Various degrees of growth reduction were induced by the radiation treatment”
t0“APPLE”
t1“APPLE”
Claim · model-written summary
Most compact mutants bore undesirably shaped fruit.
- Taxon
- APPLEMalus domesticat0
- Material
- compact mutantse0
- Outcome
- fruit of an undesirable shape, often flattened, irregular, and groovede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the compact mutants produced fruit of an undesirable shape, often flattened, irregular, and grooved”
t0“APPLE”
t1“APPLE”
Claim · model-written summary
Selected mutants combined compact growth with fruit characteristic of the variety.
- Taxon
- APPLEMalus domesticat0
- Material
- mutantse0
- Outcome
- desirable compact growth habit with fruit that was characteristic of the varietye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mutants were selected which combined the desirable compact growth habit with fruit that was characteristic of the variety”
t0“APPLE”
t1“APPLE”
The same questions in other papers
radiation · growth · Malus domestica (apple)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 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.