Claim · model-written summary
Root elongation was affected more than the other seedling growth measures by the organic acids.
- Taxon
- Oryza sativa L.
Oryza sativae0 - Treatment
- acetic, propionic, and butyric acide1
- Outcome
- Root elongatione2
- Direction
- affected moste2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice seedlings, Oryza sativa L.”
e1“were grown in sterile nutrient solution containing 1, 5, and 10 m N concentrations of acetic, propionic, and butyric acid adjusted to variables of pH 3.0, 5.0, and 7.0”
e2“Root elongation was affected most”
Title
Effect of Acetic, Propionic, and Butyric Acids on Young Rice Seedlings' Growth1
D. Niranjan Rao; D. S. Mikkelsen Agronomy Journal 1977. doi:10.2134/agronj1977.00021962006900060008x
Other claims from this paper (12)
- Intervention effect Organic acids retarded root elongation, shoot height and weight of rice seedlings, with severity increasing with concentration and decreasing pH.
- Intervention effect Residual seed reserves were greater at higher acid concentrations, corresponding to decreased root and shoot growth.
- Mechanism Inhibited translocation of stored seed reserves is suggested as the explanation for reduced seedling growth at higher acid concentrations.
- Intervention effect The magnitude of organic acid effects followed the order butyric > propionic > acetic.
- Intervention effect At 1 mN concentration, all tested organic acids reduced root length by 40 to 50%.
- Intervention effect At 1 mN concentration, the organic acids did not inhibit root initiation.
- Intervention effect At 5 mN concentration, root elongation was severely inhibited.
- Intervention effect At 5 mN concentration, most root tips showed severe root injury.
- Intervention effect At 10 mN concentration, both root elongation and root initiation were completely inhibited.
- Intervention effect Raising pH from 3 to 7 decreased the inhibiting effects of all organic acids at all concentrations.
- Mechanism The concentration of undissociated acid, rather than total acid concentration, appears to be more critical in inhibiting seedling growth.
- Recommendation A proper time interval for decomposition of the organic acids must be observed before planting rice to avoid seedling damage.