Abstract
Abstract The balance between leaf senescence, induced by phosphorus deficiency, and grain growth was examined in wheat plants grown in sand with high (control) and low phosphorus (low‐P) nutrition. Foliar applications of P were made prior to anthesis and at early and mid grain development. Low‐P plants were also given an additional dose of P via the roots at mid grain development. Foliar applications of P had no effect on leaf function (net CO2 exchange rate), or grain development in control plants. However, P applied to the flag leaf of low‐P plants delayed senescence and thus increased leaf area duration, but this did not result in a significant increase in grain yield per ear. Phosphorus applied to the ear surface (the glumes) of low‐P plants increased the concentration of P in the grain, but did not increase the number of cells per grain, or the grain yield per ear. The late application of P via the roots also delayed senescence in low‐P plants, but did not cause an increase in yield. These experiments indicate that grain growth in low‐P plants is not limited by the level of supply of photosynthate, or the availability of P during the actual period of grain development. Phosphorus translocated to the grain late in plant development is used inefficiently in plants that are adequately supplied with phosphorus and in plants suffering from P deficiency.
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 12
Claim · model-written summary
Foliar P did not affect leaf function (net CO2 exchange rate) in control wheat plants.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Foliar applications of Pe0
- Outcome
- leaf function (net CO2 exchange rate)e0
- Direction
- no effecte0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Foliar applications of P had no effect on leaf function (net CO2 exchange rate), or grain development in control plants.”
Claim · model-written summary
Foliar P did not affect grain development in control wheat plants.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Foliar applications of Pe0
- Outcome
- grain developmente0
- Direction
- no effecte0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Foliar applications of P had no effect on leaf function (net CO2 exchange rate), or grain development in control plants.”
Claim · model-written summary
Flag leaf P in low-P wheat delayed senescence.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- flag leafe0
- Treatment
- P applied to the flag leafe0
- Outcome
- senescencee0
- Direction
- delayede0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“P applied to the flag leaf of low‐P plants delayed senescence and thus increased leaf area duration, but this did not result in a significant increase in grain yield per ear.”
Claim · model-written summary
Flag leaf P in low-P wheat increased leaf area duration.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- flag leafe0
- Treatment
- P applied to the flag leafe0
- Outcome
- leaf area duratione0
- Direction
- increasede0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“P applied to the flag leaf of low‐P plants delayed senescence and thus increased leaf area duration, but this did not result in a significant increase in grain yield per ear.”
Claim · model-written summary
Flag leaf P in low-P wheat did not result in a significant increase grain yield per ear.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- flag leafe0
- Treatment
- P applied to the flag leafe0
- Outcome
- grain yield per eare0
- Direction
- did not result in a significant increasee0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“P applied to the flag leaf of low‐P plants delayed senescence and thus increased leaf area duration, but this did not result in a significant increase in grain yield per ear.”
Claim · model-written summary
Ear-surface phosphorus in low-P wheat increased concentration of P in the grain.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- ear surface (the glumes)e0
- Treatment
- Phosphorus applied to the ear surface (the glumes)e0
- Outcome
- concentration of P in the graine0
- Direction
- increasede0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Phosphorus applied to the ear surface (the glumes) of low‐P plants increased the concentration of P in the grain, but did not increase the number of cells per grain, or the grain yield per ear.”
Claim · model-written summary
Ear-surface phosphorus in low-P wheat did not increase number of cells per grain.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- ear surface (the glumes)e0
- Treatment
- Phosphorus applied to the ear surface (the glumes)e0
- Outcome
- number of cells per graine0
- Direction
- did not increasee0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Phosphorus applied to the ear surface (the glumes) of low‐P plants increased the concentration of P in the grain, but did not increase the number of cells per grain, or the grain yield per ear.”
Claim · model-written summary
Ear-surface phosphorus in low-P wheat did not increase grain yield per ear.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- ear surface (the glumes)e0
- Treatment
- Phosphorus applied to the ear surface (the glumes)e0
- Outcome
- grain yield per eare0
- Direction
- did not increasee0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Phosphorus applied to the ear surface (the glumes) of low‐P plants increased the concentration of P in the grain, but did not increase the number of cells per grain, or the grain yield per ear.”
Claim · model-written summary
Late root P in low-P wheat delayed senescence.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- late application of P via the rootse0
- Outcome
- senescencee0
- Direction
- delayede0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“The late application of P via the roots also delayed senescence in low‐P plants, but did not cause an increase in yield.”
Claim · model-written summary
Late root P in low-P wheat did not cause an increase yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- late application of P via the rootse0
- Outcome
- yielde0
- Direction
- did not cause an increasee0
- Comparator
- low‐P plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“The late application of P via the roots also delayed senescence in low‐P plants, but did not cause an increase in yield.”
Claim · model-written summary
Authors infer low-P wheat grain growth is limited by neither photosynthate supply nor P availability during grain development.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- grain growthe0
- Qualifier
- not limited by the level of supply of photosynthate, or the availability of P during the actual period of grain developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“grain growth in low‐P plants is not limited by the level of supply of photosynthate, or the availability of P during the actual period of grain development”
Claim · model-written summary
Late-translocated phosphorus is used inefficiently in both P-adequate and P-deficient wheat.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- graine0
- Outcome
- Phosphorus translocated to the grain late in plant development is used inefficientlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“Phosphorus translocated to the grain late in plant development is used inefficiently in plants that are adequately supplied with phosphorus and in plants suffering from P deficiency.”
The same questions in other papers
phosphorus · quality: postharvest · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
phosphorus · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
34 papers in the same direction as this paper · 18 in the opposite direction
- positive
- negative
- no effect
49 papers more in this group
See all 53 papers →application · growth · Triticum aestivum (wheat)Positive and negative results
33 papers in the same direction as this paper · 273 in the opposite direction
- positive
- positive
- positive
303 papers more in this group
See all 307 papers →phosphorus · yield · Triticum aestivum (wheat)Positive and negative results
47 papers in the same direction as this paper · 524 reporting no difference from an alternative
- positive
- positive
- positive
568 papers more in this group
See all 572 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.