Claim · model-written summary
Ethephon produced small or absent protein yield increases in wheat.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- ethephon treatmente0
- Outcome
- protein yielde0
- Direction
- increases were small or did not occure0
- Setting
- field conditionse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Spring Barley and Wheat”
e0“Under field conditions, ethephon treatment increased barley and wheat grain protein concentrations by as much as 16 % but decreased grain yield so that protein yield increases were small or did not occur.”
Title
Plant Growth Regulator Effects on Protein Content and Yield of Spring Barley and Wheat
B. L. Ma; S. Leibovitch; D. L. Smith Journal of Agronomy and Crop Science 1994. doi:10.1111/j.1439-037x.1994.tb00154.x
Other claims from this paper (13)
- Intervention effect Ethephon increased barley grain protein concentration by up to 16% in the field.
- Intervention effect Ethephon increased wheat grain protein concentration by up to 16% in the field.
- Intervention effect Ethephon decreased barley grain yield in the field.
- Intervention effect Ethephon decreased wheat grain yield in the field.
- Intervention effect Ethephon produced small or absent protein yield increases in barley.
- Intervention effect Laurier barley grain nitrogen content increased by up to 20% in one year.
- Association Grain protein and yield had an inverse relation across three years.
- Intervention effect The chlormequat treatment did not affect the preanthesis gradient in grain size and protein among barley spikelets.
- Intervention effect The ethephon treatment did not affect the preanthesis gradient in grain size and protein among barley spikelets.
- Intervention effect Chlormequat increased barley grain protein by 7 to 11% in a greenhouse experiment.
- Intervention effect Ethephon increased barley grain protein concentration by up to 13% in one of two greenhouse experiments.
- Mechanism The authors attribute some grain protein concentration increase to reduced starch deposition associated with reduced yield.
- Mechanism Increased protein accumulation in barley grain partly caused the protein concentration increase after plant growth regulator application.