Claim · model-written summary
Irradiation at 2535-2537Å caused an immediate decrease in divisions.
- Taxon
- PlantsViridiplantaet0
- Treatment
- exposuree0
- Outcome
- decreasee0
- Direction
- decreasee0
- Qualifier
- immediately after exposuree0
- Comparator
- normal frequencye0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Verbatim
e0“but a decrease takes place which is already conspicuous immediately after exposure, although a tendency to recover the normal frequency is recognizable after an elapse of time.”
t0“Plants”
Title
On the Influence of Ultra-violet Rays upon the Frequency of Nuclear Division in Plants
N. Takamine CYTOLOGIA 1935. doi:10.1508/cytologia.6.444
Other claims from this paper (8)
- Intervention effect After ultraviolet exposure, nuclear divisions were initially greater on the source side and rose to a maximum.
- Intervention effect Nuclear division frequency fell below normal after its second or third hour maximum.
- Observation Division frequency tended to recover after one or two days when exposure was not too long.
- Intervention effect Long exposure showed no indication of recovery.
- Intervention effect Irradiation at 2535-2537Å did not increase nuclear divisions.
- Observation After 2535-2537Å exposure, division frequency tended to recover.
- Intervention effect Three hours at 3655Å initially raised division frequency above normal.
- Intervention effect After the initial rise at 3655Å, nuclear division frequency decreased below normal.