Abstract
Finding and improving wheat cultivars with good adaptability to abiotic stress is an important objective in breeding programmes. An experiment was set up in the climate chamber of the Martonvásár phytotron to test the effect of heat and drought stress on two winter wheat varieties and one variety of durum. Wheat plants exposed to 35°C and drought during grain filling exhibited altered agronomic and grain quality characteristics. Drought was found to have a much greater influence on yield and quality than heat stress. Reductions in the unextractable polymeric protein fraction and the glutenin-to-gliadin ratio indicated poorer grain yield quality as a result of drought, despite higher protein content. Quality deterioration was observed after drought, while heat stress had no noticeable influence on the protein quality of the three wheat genotypes, measured using size exclusion high performance liquid chromatography (SE-HPLC). The durum variety had a better ratio of protein components and a significantly higher Zeleny value when exposed to heat stress, although it had the lowest grain yield and grain/straw ratio.The most significant negative correlation was observed between the Zeleny value and the unextractable polymeric protein (UPP%) fraction after heat treatment and between the relative protein content and the albumin+globulin % (AG%) in the case of drought. These correlations testify that these parameters play an important role in determining the baking quality of wheat flour.
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Claims 13
Claim · model-written summary
Drought influenced wheat yield more than heat stress.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Droughte0
- Outcome
- yielde0
- Direction
- much greater influencee0
- Comparator
- heat stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought was found to have a much greater influence on yield and quality than heat stress.”
t0“wheat”
Claim · model-written summary
Drought influenced wheat quality more than heat stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Droughte0
- Outcome
- qualitye0
- Direction
- much greater influencee0
- Comparator
- heat stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought was found to have a much greater influence on yield and quality than heat stress.”
t0“wheat”
Claim · model-written summary
Drought reduced the unextractable polymeric protein fraction.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- unextractable polymeric protein fractione0
- Direction
- Reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in the unextractable polymeric protein fraction and the glutenin-to-gliadin ratio indicated poorer grain yield quality as a result of drought”
t0“wheat”
Claim · model-written summary
Drought reduced the glutenin-to-gliadin ratio.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- glutenin-to-gliadin ratioe0
- Direction
- Reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reductions in the unextractable polymeric protein fraction and the glutenin-to-gliadin ratio indicated poorer grain yield quality as a result of drought”
t0“wheat”
Claim · model-written summary
Drought increased protein content despite poorer quality.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- protein contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as a result of drought, despite higher protein content.”
t0“wheat”
Claim · model-written summary
Drought deteriorated protein quality in the wheat genotypes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- Qualitye0
- Direction
- deterioratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quality deterioration was observed after drought”
t0“wheat”
Claim · model-written summary
Heat stress had no noticeable effect on protein quality in three wheat genotypes.
- Taxon
- wheatTriticum aestivume0
- Treatment
- heat stresse0
- Outcome
- protein qualitye0
- Direction
- no noticeable influencee0
- Qualifier
- three wheat genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heat stress had no noticeable influence on the protein quality of the three wheat genotypes”
Claim · model-written summary
Under heat stress, durum had a better protein component ratio.
- Taxon
- wheatTriticum aestivumt0
- Material
- durum varietye0
- Treatment
- heat stresse0
- Outcome
- ratio of protein componentse0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The durum variety had a better ratio of protein components and a significantly higher Zeleny value when exposed to heat stress”
t0“wheat”
Claim · model-written summary
Under heat stress, durum had a significantly higher Zeleny value.
- Taxon
- wheatTriticum aestivumt0
- Material
- durum varietye0
- Treatment
- heat stresse0
- Outcome
- Zeleny valuee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The durum variety had a better ratio of protein components and a significantly higher Zeleny value when exposed to heat stress”
t0“wheat”
Claim · model-written summary
The durum variety had the lowest grain yield.
- Taxon
- wheatTriticum aestivumt0
- Material
- durum varietyt1
- Outcome
- grain yielde0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although it had the lowest grain yield and grain/straw ratio.”
t0“wheat”
t1“The durum variety had a better ratio of protein components and a significantly higher Zeleny value when exposed to heat stress, although it had the lowest grain yield and grain/straw ratio.”
Claim · model-written summary
The durum variety had the lowest grain to straw ratio.
- Taxon
- wheatTriticum aestivumt0
- Material
- durum varietyt1
- Outcome
- grain/straw ratioe0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although it had the lowest grain yield and grain/straw ratio.”
t0“wheat”
t1“The durum variety had a better ratio of protein components and a significantly higher Zeleny value when exposed to heat stress, although it had the lowest grain yield and grain/straw ratio.”
Claim · model-written summary
After heat treatment, Zeleny value and UPP fraction had the strongest negative correlation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- heat treatmente0
- Outcome
- Zeleny valuee0
- Direction
- negative correlatione0
- Comparator
- unextractable polymeric protein (UPP%) fractione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most significant negative correlation was observed between the Zeleny value and the unextractable polymeric protein (UPP%) fraction after heat treatment”
t0“wheat”
Claim · model-written summary
Under drought, relative protein content and albumin plus globulin percentage had a negative correlation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- relative protein contente0
- Direction
- negative correlationt1
- Comparator
- albumin+globulin % (AG%)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“between the relative protein content and the albumin+globulin % (AG%) in the case of drought.”
t0“wheat”
t1“The most significant negative correlation was observed between the Zeleny value and the unextractable polymeric protein (UPP%) fraction after heat treatment and between the relative protein content and the albumin+globulin % (AG%) in the case of drought.”
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See all 632 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.