Claim · model-written summary
Percent germination of dehulled red rice transferred to kinetin decreased as the duration of prior water incubation increased.
- Taxon
- Oryza sativa
Oryza sativat0 - Treatment
- water incubatione1
- Outcome
- percent germinatione1
- Direction
- decreasede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e1“When dehulled seeds were incubated in water and then transferred to kinetin, percent germination decreased as the duration of water incubation increased”
Title
Seed Dormancy in Red Rice (Oryza sativa). II. Response to Cytokinins
Marc A. Cohn; Denise L. Butera Weed Science 1982. doi:10.1017/s0043174500062330
Other claims from this paper (13)
- Intervention effect Dormant dehulled red rice germinated 80 to 90% at 30 C after exposure to kinetin, benzyladenine or isopentenyladenine at pH 3.5.
- Intervention effect Zeatin also elicited 45% germination at 10- 3 M in dormant red rice.
- Intervention effect Adenine was inactive in promoting germination of dormant red rice at concentrations as high as 10- 2 M.
- Intervention effect Light had little influence on cytokinin-stimulated germination of red rice.
- Intervention effect Initial pH of the medium had no effect on cytokinin-stimulated germination of red rice.
- Intervention effect At 20 C the response of red rice to cytokinins was reduced.
- Intervention effect At 20 C germination of non-dormant red rice seeds was not prevented.
- Intervention effect At 30 C dehulled red rice with 10- 3 M kinetin germinated rapidly, reaching almost 70% germination after 2 days.
- Association The loss of cytokinin response did not parallel the timecourse of imbibition in red rice.
- Intervention effect Cytokinins did not break dormancy of intact red rice seeds.
- Mechanism The hull appears to limit kinetin uptake in red rice.
- Intervention effect Germination of red rice remained inhibited when kinetin was forced into intact seeds by vacuum infiltration.
- Intervention effect Dry-after-ripening of intact red rice seeds at 30 C did not increase their kinetin-sensitivity.