Abstract
Abstract The presence of protease inhibitors in soybean prohibits the utilisation of the raw beans for food and feed. However, little information is available about environmental influences and the effects of nitrogen and sulphur supply on the antinutritional constituents of soybean. As these factors may influence protease inhibitors, soybean genotypes segregated according to the presence or absence of the Kunitz trypsin inhibitor have been evaluated for trypsin inhibitor activity (TIA) in field trials. TIA was affected significantly by environment (geographical location), fertilisation treatment and genotype. Environmental means of TIA were between 69.5 and 104.8 mg g −1 . Nitrogen application, which caused an increase in seed protein content, resulted in a reduction in TIA by about 15% as compared with the control. Remarkably, simultaneous application of nitrogen and sulphur in the form of ammonium sulphate had a similar reductive effect on TIA to that of nitrogen application alone, although soybean protease inhibitors are rich in sulphur amino acids. Significant genetic variation in TIA was found both within the genotype class with the Kunitz inhibitor present as well as within the class lacking this inhibitor. The results suggest that TIA of soybean may be modified considerably by genetic improvement and appropriate agronomic management. Copyright © 2003 Society of Chemical Industry
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Claims 7
Claim · model-written summary
Environment, fertilization and genotype significantly affected TIA.
- Taxon
- soybean
Glycine maxt0 - Treatment
- fertilisation treatmente0
- Outcome
- TIAe0
- Setting
- geographical locatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“TIA was affected significantly by environment (geographical location), fertilisation treatment and genotype”
Claim · model-written summary
Environmental mean TIA ranged from 69.5 to 104.8 mg g −1.
- Taxon
- soybeanGlycine maxt0
- Outcome
- TIAe0
- Value
- 69.5 and 104.8 mg g −1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Environmental means of TIA were between 69.5 and 104.8 mg g −1”
Claim · model-written summary
Nitrogen application increased seed protein content.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- seede0
- Treatment
- Nitrogen applicatione0
- Outcome
- seed protein contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Nitrogen application, which caused an increase in seed protein content”
Claim · model-written summary
Nitrogen application reduced TIA by about 15% versus control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Nitrogen applicatione0
- Outcome
- TIAe0
- Direction
- reductione0
- Value
- about 15%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Nitrogen application, which caused an increase in seed protein content, resulted in a reduction in TIA by about 15% as compared with the control”
Claim · model-written summary
Nitrogen and sulphur application as ammonium sulphate reduced TIA similarly to nitrogen alone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- simultaneous application of nitrogen and sulphur in the form of ammonium sulphatee0
- Outcome
- TIAe0
- Direction
- reductivee0
- Comparator
- nitrogen application alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“simultaneous application of nitrogen and sulphur in the form of ammonium sulphate had a similar reductive effect on TIA to that of nitrogen application alone”
Claim · model-written summary
Significant TIA variation occurred within both Kunitz inhibitor genotype classes.
- Taxon
- soybeanGlycine maxt0
- Gene
- Kunitz inhibitore0
- Outcome
- genetic variation in TIAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Significant genetic variation in TIA was found both within the genotype class with the Kunitz inhibitor present as well as within the class lacking this inhibitor”
Claim · model-written summary
The authors suggest genetic improvement and agronomic management can modify soybean TIA.
- Taxon
- soybeanGlycine maxe0
- Outcome
- genetic improvement and appropriate agronomic managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TIA of soybean may be modified considerably by genetic improvement and appropriate agronomic management”
The same questions in other papers
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- positive
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See all 81 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.