Claim · model-written summary
No stem curvature occurred in plants treated in darkness.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
e0“no stem curvature occurred”
t0“Bean Plants”
Title
Absorption and Translocation of Ammonium 2,4-Dichlorophenoxyacetate by Bean Plants
Elroy L. Rice Botanical Gazette 1948. doi:10.1086/335481
Other claims from this paper (14)
- Observation Much of aqueous NH4(2,4-D) uptake by bean leaves occurred within four hours.
- Intervention effect Adding Carbowax 1500 led to continuous uptake over 72 hours.
- Association Salt absorption correlated positively with treatment temperature with and without Carbowax.
- Intervention effect Absorption did not differ significantly between 100 and 900 foot-candles at equal temperature.
- Intervention effect Salt absorption in darkness was significantly greater than in light.
- Intervention effect Dark treated trifoliate leaf blades had essentially the same fresh weight as controls.
- Observation Treated primary leaves folded upward and became wavy in darkness.
- Mechanism The authors inferred no translocation from treated leaves in complete darkness.
- Intervention effect At 100 foot-candles, trifoliate blade relative fresh weights were greater than at 900 foot-candles.
- Intervention effect Stem curvature was higher at 900 than at 100 foot-candles.
- Intervention effect Leaves under lower light tended to become wavy whereas those at 900 foot-candles were not visibly affected.
- Association The authors inferred positive correlation of translocation rate with light intensity at lower intensities.
- Intervention effect Available data indicated no Carbowax effect on translocation.
- Observation Temperature effects on translocation rate were inconclusive.