Abstract
High temperature (HT) and drought stress (DS) pose serious limitations to wheat ( Triticum aestivum L.) grain development, which strongly influences grain yield and quality. In this study, we investigated changes in starch characteristics and starch granules of the high‐yielding winter wheat cultivar Zhengmai 366 in response to HT and DS, both alone and in combination. HT, DS and the combination of these stressors led to a significant reduction in the proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm), and the effects of HT and DS were significantly additive. The volume proportion of A‐type starch granules (>9.9 µm) was positively correlated with the contents of AM, AP and starch as well as the grain yield (thousand grains weight) and was negatively correlated with the ratio of AM to AP, whereas there was a contrary correlation between the volume proportion of B‐type starch granules (<9.9 µm) and these values. HT, DS and HT plus DS led to a significant reduction in the content of AP and starch and grain yield, but these treatments had less of an impact on AM content. DS reduced the size of the small starch granules, while HT reduced the size of the large granules. The changes in morphology and size distribution of starch granules led to a reduction in starch content under both stress conditions, consequently reducing grain yield. HT plus DS had a much greater influence on starch characteristics and yield than HT or DS alone.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Heat reduced the A-to-B starch granule proportion.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- HTe0
- Outcome
- proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)e0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and the combination of these stressors led to a significant reduction in the proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)”
t0“wheat grains”
Claim · model-written summary
Drought reduced the A-to-B starch granule proportion.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- DSe0
- Outcome
- proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)e0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and the combination of these stressors led to a significant reduction in the proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)”
t0“wheat grains”
Claim · model-written summary
Combined heat and drought reduced the A-to-B starch granule proportion.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- the combination of these stressorse0
- Outcome
- proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)e0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and the combination of these stressors led to a significant reduction in the proportion of A‐type starch granules (>9.9 µm) to B‐type starch granules (<9.9 µm)”
t0“wheat grains”
Claim · model-written summary
Heat and drought effects on granule proportions were significantly additive.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- effects of HT and DSe0
- Direction
- additivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of HT and DS were significantly additive.”
t0“wheat grains”
Claim · model-written summary
A-granule volume proportion correlated positively with amylose, amylopectin, starch and thousand grain weight.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- A‐type starch granulese0
- Outcome
- contents of AM, AP and starch as well as the grain yield (thousand grains weight)e0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The volume proportion of A‐type starch granules (>9.9 µm) was positively correlated with the contents of AM, AP and starch as well as the grain yield (thousand grains weight)”
t0“wheat grains”
Claim · model-written summary
A-granule volume proportion correlated negatively with the amylose-to-amylopectin ratio.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- A‐type starch granulese0
- Outcome
- ratio of AM to APe0
- Direction
- negatively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The volume proportion of A‐type starch granules (>9.9 µm) was positively correlated with the contents of AM, AP and starch as well as the grain yield (thousand grains weight) and was negatively correlated with the ratio of AM to AP”
t0“wheat grains”
Claim · model-written summary
B-granule volume proportion showed the opposite correlations with starch components and yield.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- B‐type starch granulese0
- Outcome
- these valuese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a contrary correlation between the volume proportion of B‐type starch granules (<9.9 µm) and these values.”
t0“wheat grains”
Claim · model-written summary
Heat significantly reduced amylopectin and starch contents and grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- HTe0
- Outcome
- content of AP and starch and grain yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and HT plus DS led to a significant reduction in the content of AP and starch and grain yield”
t0“wheat grains”
Claim · model-written summary
Drought significantly reduced amylopectin and starch contents and grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- DSe0
- Outcome
- content of AP and starch and grain yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and HT plus DS led to a significant reduction in the content of AP and starch and grain yield”
t0“wheat grains”
Claim · model-written summary
Combined heat and drought significantly reduced amylopectin and starch contents and grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- HT plus DSe0
- Outcome
- content of AP and starch and grain yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT, DS and HT plus DS led to a significant reduction in the content of AP and starch and grain yield”
t0“wheat grains”
Claim · model-written summary
The stresses had less impact on amylose content.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- AM contente0
- Direction
- less of an impacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these treatments had less of an impact on AM content.”
t0“wheat grains”
Claim · model-written summary
Drought reduced small starch granule size.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- DSe0
- Outcome
- size of the small starch granulese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DS reduced the size of the small starch granules”
t0“wheat grains”
Claim · model-written summary
Heat reduced large starch granule size.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- HTe0
- Outcome
- size of the large granulese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT reduced the size of the large granules.”
t0“wheat grains”
Claim · model-written summary
Granule morphology and size shifts reduced starch content and consequently grain yield.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- starch contente0
- Direction
- reductione0
- Qualifier
- under both stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The changes in morphology and size distribution of starch granules led to a reduction in starch content under both stress conditions, consequently reducing grain yield.”
t0“wheat grains”
Claim · model-written summary
Combined heat and drought affected starch and yield more than either stress alone.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- starch characteristics and yielde0
- Direction
- much greater influencee0
- Comparator
- HT or DS alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT plus DS had a much greater influence on starch characteristics and yield than HT or DS alone.”
t0“wheat grains”
The same questions in other papers
heat · quality: sugar starch · Triticum aestivum (wheat)Results differ
34 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
38 papers more in this group
See all 42 papers →drought · quality: sugar starch · Triticum aestivum (wheat)Results differ
40 papers in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- negative
48 papers more in this group
See all 52 papers →heat · growth · Triticum aestivum (wheat)Positive and negative results
88 papers in the same direction as this paper · 42 in the opposite direction
- negative
- positive
- positive
127 papers more in this group
See all 131 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.