Claim · model-written summary
A 30 second light break in a long dark period inhibited flowering as much as a long day.
- Taxon
- Kalanchoe blossfeldiana
_Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=60)
Kalanchoe blossfeldianae0 - Treatment
- A light break of as little as 30 seconds' duratione1
- Outcome
- as inhibitorye1
- Direction
- as inhibitorye1
- Comparator
- a long daye1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=500)
Verbatim
e0“Kalanchoe blossfeldiana”
e1“A light break of as little as 30 seconds' duration given in the middle of a long dark period is as inhibitory as a long day”
Title
Evidence for a Flowering Inhibitor Produced in Long Days in Kalanchoe blossfeldiana
W. W. SCHWABE Annals of Botany 1956. doi:10.1093/oxfordjournals.aob.a083505
Other claims from this paper (9)
- Intervention effect Single long days intercalated between short days inhibit flower initiation.
- Observation The inhibitory effect of dispersed long days was approximately additive, unlike consecutive long days.
- Observation One long day annulled the flowering effect of about 1⅓ short days on average.
- Association Flower numbers increased approximately exponentially with inductive cycles up to at least 12 short days.
- Association Inhibition by interspersed long days fitted an exponential curve and was roughly proportional to previous induction.
- Intervention effect A following long dark period almost completely neutralized inhibition by an intercalated long day.
- Intervention effect A preceding long dark period did not neutralize inhibition by an intercalated long day.
- Mechanism The authors interpret the results as interaction of a flowering inhibitor with a flowering reaction.
- Mechanism Competitive inhibition of an adaptively formed enzyme is proposed as a possible mechanism.