Abstract
With winter wheat varieties Yangmai 9 and Yumai 34 as test materials, this paper studied post-anthesis photosynthetic characteristics in flag leaves, the translocation of assimilates and nitrogen stored in vegetative organs before and after anthesis and their relationships with grain yield and quality under different temperature and water conditions. The results showed that high temperature, drought, and waterlogging all had significant negative effects on photosynthetic rate and chlorophyll content (SPAD value) of flag leaves, and the effects of drought and waterlogging were greater under high temperature than under optimum temperature. The translocation amount and rate of assimilates and nitrogen stored in vegetative organs before anthesis declined in the order of drought > normal soil moisture content > waterlogging under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature. The amount of post-anthesis assimilates translocated into grain declined in the order of normal soil moisture content > waterlogging > drought under optimum temperature, but normal soil moisture content > drought > waterlogging under high temperature, while that of post-anthesis accumulated nitrogen declined in the order of normal soil moisture content > waterlogging > drought under both high and optimum temperature. The starch and protein contents in grains were the lowest under high temperature x waterlogging, but the highest under optimum temperature x normal soil moisture content. Overall, the decrease of grain mass and starch content under high temperature and water stresses was associated with the lower photosynthetic rate and less post-anthesis assimilates accumulation, while grain protein content was related to the translocation amount and rate of nitrogen stored before anthesis.
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 8
Claim · model-written summary
High temperature, drought and waterlogging significantly reduced flag leaf photosynthetic rate and chlorophyll content.
- Taxon
- winter wheat
Triticum aestivumt0 - Organ / stage
- flag leavese0
- Treatment
- high temperature, drought, and waterlogginge0
- Outcome
- photosynthetic rate and chlorophyll content (SPAD value)e0
- Direction
- negative effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high temperature, drought, and waterlogging all had significant negative effects on photosynthetic rate and chlorophyll content (SPAD value) of flag leaves”
t0“winter wheat”
Claim · model-written summary
Drought and waterlogging effects on flag leaf physiology were greater under high than optimum temperature.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- drought and waterlogginge0
- Outcome
- effects of drought and waterlogginge0
- Direction
- greatere0
- Comparator
- optimum temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of drought and waterlogging were greater under high temperature than under optimum temperature”
t0“winter wheat”
Claim · model-written summary
Under optimum temperature, pre anthesis assimilate and nitrogen translocation ranked drought above normal moisture above waterlogging.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- translocation amount and rate of assimilates and nitrogene0
- Direction
- declinede0
- Qualifier
- drought > normal soil moisture content > waterlogging under optimum temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The translocation amount and rate of assimilates and nitrogen stored in vegetative organs before anthesis declined in the order of drought > normal soil moisture content > waterlogging under optimum temperature”
t0“winter wheat”
Claim · model-written summary
At optimum temperature, post anthesis assimilate transfer to grain ranked normal moisture above waterlogging above drought.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- post-anthesis assimilates translocated into graine0
- Direction
- declinede0
- Qualifier
- normal soil moisture content > waterlogging > drought under optimum temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of post-anthesis assimilates translocated into grain declined in the order of normal soil moisture content > waterlogging > drought under optimum temperature”
t0“winter wheat”
Claim · model-written summary
Post anthesis accumulated nitrogen ranked normal moisture above waterlogging above drought at both temperatures.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- post-anthesis accumulated nitrogene0
- Direction
- declinede0
- Qualifier
- under both high and optimum temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“that of post-anthesis accumulated nitrogen declined in the order of normal soil moisture content > waterlogging > drought under both high and optimum temperature”
t0“winter wheat”
Claim · model-written summary
Grain starch and protein contents were lowest under heat with waterlogging and highest under optimum temperature with normal moisture.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- high temperature x waterlogginge0
- Outcome
- starch and protein contents in grainse0
- Direction
- loweste0
- Comparator
- optimum temperature x normal soil moisture contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The starch and protein contents in grains were the lowest under high temperature x waterlogging, but the highest under optimum temperature x normal soil moisture content.”
t0“winter wheat”
Claim · model-written summary
Lower grain mass and starch under heat and water stress were associated with lower photosynthesis and less post anthesis assimilate accumulation.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- high temperature and water stressese0
- Outcome
- decrease of grain mass and starch contente0
- Direction
- decreasee0
- Qualifier
- lower photosynthetic rate and less post-anthesis assimilates accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease of grain mass and starch content under high temperature and water stresses was associated with the lower photosynthetic rate and less post-anthesis assimilates accumulation”
t0“winter wheat”
Claim · model-written summary
Grain protein content was related to the amount and rate of pre anthesis nitrogen translocation.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- before anthesise0
- Outcome
- grain protein contente0
- Qualifier
- translocation amount and rate of nitrogene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain protein content was related to the translocation amount and rate of nitrogen stored before anthesis”
t0“winter wheat”
The same questions in other papers
flooding · physiology: photosynthesis · Triticum aestivum (wheat)Results differ
36 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
40 papers more in this group
See all 44 papers →heat · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
72 papers in the same direction as this paper · 17 in the opposite direction
- positive
- positive
- positive
86 papers more in this group
See all 90 papers →drought · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
204 papers in the same direction as this paper · 41 in the opposite direction
- positive
- positive
- positive
242 papers more in this group
See all 246 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.