Abstract
Abstract Grain protein is important in human and animal nutrition and in relation to various culinary uses of flour. Various wheat ( Triticum aestivum L.) cultivars are reported to vary widely in grain yield and protein concentrations. To study yield‐protein relationships, three soft red winter (Atlas 66, Knox 62, and Blue Boy) and three hard red winter (Norin 16, Tascosa, and Omaha) wheat cultivars were grown in a pot experiment at Muscle Shoals, Alabama. Response to 0, 100, 200, 400, 800, and 1,200 mg of N/pot (3 kg of Mountview silt loam) together with adequate, uniform rates of other nutrients was determined. All cultivars increased similarly in grain and straw yields, crude protein concentrations, and crude protein / pot with amount of applied N. The ranking for grain yields was: Tascosa > Blue Boy = Knox 62 > Omaha > Norin 16 > Atlas. The ranking for crude protein concentrations was in the reverse order. These trends indicate pronounced genetic differences among cultivars. At each rate of applied N, protein concentrations were also inversely related to grain and straw yields. Early uptake of N at forage and boot stages of growth was usually highly correlated with uptake in grain + straw at maturity. Nitrogen and moisture supply, light, temperature, and other growth factors greatly affect yield‐protein relationships among cultivars. Differences among cultivars tended to be greatest under optimum growth conditions.
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Claims 7
Claim · model-written summary
Applied N similarly increased grain and straw yields across wheat cultivars.
Not reportedComparator
Verbatim
e0“All cultivars increased similarly in grain and straw yields, crude protein concentrations, and crude protein / pot with amount of applied N”
t0“Wheat Grain”
Claim · model-written summary
Applied N similarly increased crude protein concentrations and crude protein per pot.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- applied Ne0
- Outcome
- crude protein concentrations, and crude protein / pote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All cultivars increased similarly in grain and straw yields, crude protein concentrations, and crude protein / pot with amount of applied N”
t0“Wheat Grain”
Claim · model-written summary
Grain yield ranked Tascosa highest and Atlas lowest among the six cultivars.
- Taxon
- WheatTriticum aestivumt0
- Material
- Tascosae0
- Outcome
- grain yieldse0
- Direction
- rankinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ranking for grain yields was: Tascosa > Blue Boy = Knox 62 > Omaha > Norin 16 > Atlas”
t0“Wheat Grain”
Claim · model-written summary
Crude protein concentrations ranked in the reverse cultivar order to grain yield.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- crude protein concentrationse0
- Direction
- reverse ordere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ranking for crude protein concentrations was in the reverse order”
t0“Wheat Grain”
Claim · model-written summary
At each applied N rate, wheat protein concentration was inversely related to grain and straw yields.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- protein concentrationse0
- Direction
- inversely relatede0
- Comparator
- grain and straw yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At each rate of applied N, protein concentrations were also inversely related to grain and straw yields”
t0“Wheat Grain”
Claim · model-written summary
Early N uptake at forage and boot stages was usually highly correlated with uptake at maturity.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- forage and boot stages of growthe0
- Outcome
- Early uptake of Ne0
- Comparator
- uptake in grain + straw at maturitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early uptake of N at forage and boot stages of growth was usually highly correlated with uptake in grain + straw at maturity”
t0“Wheat Grain”
Claim · model-written summary
Cultivar differences tended to be greatest under optimum growth conditions.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- Differences among cultivarse0
- Direction
- greateste0
- Qualifier
- optimum growth conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences among cultivars tended to be greatest under optimum growth conditions”
t0“Wheat Grain”
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