Claim · model-written summary
Rape seed germination proceeds through imbibition and growth phases.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Outcome
- an initial imbibition phase and a subsequent growth phasee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Germination of rape (Brassica napus L.) seeds proceeds in two phases, an initial imbibition phase and a subsequent growth phase.”
Title
Control of Seed Germination by Abscisic Acid
Peter Schopfer; Claudia Plachy PLANT PHYSIOLOGY 1984. doi:10.1104/pp.76.1.155
Other claims from this paper (9)
- Intervention effect Exogenous ABA at 0.1 millimoles per liter prevents embryos entering the growth phase.
- Intervention effect ABA rapidly and reversibly inhibits water uptake, with a lag of about one hour.
- Mechanism Water uptake inhibition appears to cause changes in energy metabolism.
- Intervention effect Untreated seeds require 11 bars of polyethylene glycol osmotic pressure to simulate ABA inhibition of water uptake.
- Intervention effect In ABA-treated seeds, only 3 bars of osmotic pressure suppresses water uptake.
- Intervention effect ABA lowers embryo water absorption ability under osmotic stress.
- Observation ABA and osmoticum act synergistically on germination.
- Observation ABA and cycloheximide exhibit independent multiplicative coaction.
- Mechanism The authors interpret ABA and osmotic stress as sharing a controlling point in seed water relations.