Abstract
Concentration and composition of storage proteins affect the baking quality of wheat. Although both are influenced by late nitrogen fertilization, it is not clear whether compositional changes are sufficient to improve the baking quality, and whether such effects are cultivar specific. In a pot experiment, two winter wheat cultivars belonging to different quality classes were supplied with two levels of late N fertilizer. Protein subunits were analysed by SDS-PAGE (Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis). Late N supply increased grain yield and protein content in both cultivars, but improved baking quality only in Discus, correlated with stronger changes in glutenin and gliadin fractions. Where baking quality was improved, this occurred at the lower late N level. Overall, the composition rather than the amount of gluten proteins was decisive for flour quality. Measures for enhancing grain protein concentration and composition are less necessary for cultivars such as Rumor in order to achieve optimum baking quality. These results open up an opportunity to reduce N fertilization in wheat production systems.
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Claims 8
Claim · model-written summary
Late nitrogen increased grain yield in both wheat cultivars.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- Late N supplye0
- Outcome
- grain yielde0
- Direction
- increasede0
- Qualifier
- both cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late N supply increased grain yield and protein content in both cultivars”
t0“Winter Wheat”
Claim · model-written summary
Late nitrogen increased protein content in both wheat cultivars.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Late N supplye0
- Outcome
- protein contente0
- Direction
- increasede0
- Qualifier
- both cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late N supply increased grain yield and protein content in both cultivars”
t0“Winter Wheat”
Claim · model-written summary
Late nitrogen improved baking quality only in Discus.
- Taxon
- WheatTriticum aestivumt0
- Material
- Discuse0
- Treatment
- Late N supplye1
- Outcome
- baking qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved baking quality only in Discus”
t0“Winter Wheat”
e1“Late N supply increased grain yield and protein content in both cultivars”
Claim · model-written summary
Stronger changes in glutenin and gliadin fractions correlated with the Discus baking-quality improvement.
- Taxon
- WheatTriticum aestivumt0
- Compound
- glutenin and gliadin fractionse0
- Outcome
- baking qualitye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“correlated with stronger changes in glutenin and gliadin fractions”
t0“Winter Wheat”
e1“but improved baking quality only in Discus”
Claim · model-written summary
Baking quality improved at the lower late nitrogen level where an improvement occurred.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- lower late N levele0
- Outcome
- baking qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Where baking quality was improved, this occurred at the lower late N level”
t0“Winter Wheat”
Claim · model-written summary
Gluten protein composition was more decisive than amount for flour quality.
- Taxon
- WheatTriticum aestivumt0
- Compound
- gluten proteinse0
- Outcome
- flour qualitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the composition rather than the amount of gluten proteins was decisive for flour quality”
t0“Winter Wheat”
Claim · model-written summary
The authors suggest less need to enhance grain protein for Rumor to attain optimal baking quality.
- Taxon
- WheatTriticum aestivumt0
- Material
- Rumore0
- Outcome
- Measures for enhancing grain protein concentration and composition are less necessarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Measures for enhancing grain protein concentration and composition are less necessary for cultivars such as Rumor in order to achieve optimum baking quality”
t0“Winter Wheat”
Claim · model-written summary
The authors identify an opportunity to reduce nitrogen fertilizer in wheat production.
- Taxon
- wheatTriticum aestivume0
- Outcome
- reduce N fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results open up an opportunity to reduce N fertilization in wheat production systems”
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