Claim · model-written summary
Expansion of several tissues enlarged club tips and swollen spurs.
- Taxon
- apple trees
Malus domesticae1 - Outcome
- enlargement of club tips and swollen spurse0
- Qualifier
- Expansion of pith, vascular tissue, cortex, wound cambium and periderme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Expansion of pith, vascular tissue, cortex, wound cambium and periderm caused enlargement of club tips and swollen spurs.”
e1“‘Golden Delicious’ apple trees”
Title
RADIATION DAMAGE IN APPLE SHOOT APICES
Charlotte Pratt; John Einset; Mohammad Zahur American Journal of Botany 1959. doi:10.1002/j.1537-2197.1959.tb07047.x
Other claims from this paper (12)
- Observation Irradiated Golden Delicious lateral buds grew into budless spurs and swollen tips the next year.
- Observation Irradiated lateral bud apices had thick-walled, lightly stained cells in mid-June.
- Observation Outer tunica was more radiation resistant than inner layers and corpus; pith rib meristem was more resistant still.
- Observation Inflorescence and floral meristems were rare but developed after forming.
- Observation One-year budless spurs lacked an organized apical meristem and leaf primordia.
- Observation Budless spur apices often had folded surfaces.
- Observation Periderm and subsequently deep wound cambium developed.
- Observation Many lateral buds removed from irradiation in August produced long shoots with terminal buds.
- Observation Scions removed in November had lower survival and many budless shoots.
- Observation Delicious, Golden Delicious and McIntosh were more radiation sensitive than Cox, Macoun and Spy.
- Observation Acute and chronic irradiation produced similar first-year bud symptoms.
- Association Apical meristem death varied with developmental stage, meristem structure and genotype.