Abstract
Abstract Plant leaf area affects both plant growth and yield. Although the effects of phosphorus and water availability on leaf area development have been studied as isolated factors, little work has been done on their possible interactions. A pot experiment was conducted to investigate the effects of both P and water availability on early leaf appearance and expansion in soft red winter wheat ( Triticum aestivum L.), and to determine whether the effect of water deficit changes at each level of P nutrition and whether the soil water content affects plant P uptake. The soil was a Lonewood loam (fine‐loamy, siliceous, mesic Typic Hapludult), which had an available P level of 8.2 mg P kg −1 (Mehlich III). Additional P was applied at 0, 10 and 20 mg P kg −1 soil. Water treatments consisted of keeping soil‐water content at 80% (well watered) and 53% (stressed) of the 10 kPa soil‐water content. Plant development, leaf appearance and expansion, and stomatal resistance were measured during the experiment. At harvest (38 d after emergence), leaf area, aboveground biomass, and P concentration were measured. Phosphorus and water availability exhibited a significant interaction on tiller and leaf appearance, which were reduced by water stress but only at 0 applied P. As individual factors, P and water influenced different plant features. Lack of applied P decreased the rate of leaf appearance and, therefore, the final number of leaves and leaf area per plant. Water deficit reduced individual leaf area and, at 0 applied P, reduced rate of leaf appearance, number of simultaneously expanding leaves, and final number of leaves. Phosphorus uptake was increased only with added soil P, and not by water stress. The ability of plants to cope with mild water stress was enhanced by adequate P nutrition.
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 9
Claim · model-written summary
Phosphorus and water had a significant interaction on tiller and leaf appearance.
Not reportedTaxon
Verbatim
e0“Phosphorus and water availability exhibited a significant interaction on tiller and leaf appearance, which were reduced by water stress but only at 0 applied P”
Claim · model-written summary
Without applied P, leaf appearance rate decreased.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- Lack of applied Pe0
- Outcome
- rate of leaf appearancee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Lack of applied P decreased the rate of leaf appearance and, therefore, the final number of leaves and leaf area per plant”
Claim · model-written summary
Without applied P, final leaf number and leaf area decreased.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Lack of applied Pe0
- Outcome
- final number of leaves and leaf area per plante0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Lack of applied P decreased the rate of leaf appearance and, therefore, the final number of leaves and leaf area per plant”
Claim · model-written summary
Water deficit reduced individual leaf area.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Water deficite0
- Outcome
- individual leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Water deficit reduced individual leaf area”
Claim · model-written summary
At zero applied P, water deficit reduced leaf appearance rate.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Water deficite0
- Outcome
- rate of leaf appearancee0
- Direction
- reducede0
- Qualifier
- at 0 applied Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Water deficit reduced individual leaf area and, at 0 applied P, reduced rate of leaf appearance, number of simultaneously expanding leaves, and final number of leaves”
Claim · model-written summary
At zero applied P, water deficit reduced simultaneously expanding and final leaf numbers.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Water deficite0
- Outcome
- number of simultaneously expanding leaves, and final number of leavese0
- Direction
- reducede0
- Qualifier
- at 0 applied Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Water deficit reduced individual leaf area and, at 0 applied P, reduced rate of leaf appearance, number of simultaneously expanding leaves, and final number of leaves”
Claim · model-written summary
Added soil P increased phosphorus uptake.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- added soil Pe0
- Outcome
- Phosphorus uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Phosphorus uptake was increased only with added soil P, and not by water stress”
Claim · model-written summary
Water stress did not increase phosphorus uptake.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water stresse0
- Outcome
- Phosphorus uptakee0
- Direction
- not by water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“Phosphorus uptake was increased only with added soil P, and not by water stress”
Claim · model-written summary
Adequate P nutrition enhanced ability to cope with mild water stress.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- adequate P nutritione0
- Outcome
- ability of plants to cope with mild water stresse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat”
e0“The ability of plants to cope with mild water stress was enhanced by adequate P nutrition”
The same questions in other papers
drought · nutrient: content · Triticum aestivum (wheat)Positive and negative results
47 papers in the same direction as this paper · 12 in the opposite direction
- negative
- positive
- positive
56 papers more in this group
See all 60 papers →phosphorus · growth · Triticum aestivum (wheat)Positive and negative results
157 papers in the same direction as this paper · 34 in the opposite direction · 1 reporting no difference from an alternative
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- no effect
- no effect
189 papers more in this group
See all 193 papers →drought · growth · Triticum aestivum (wheat)Positive and negative results
344 papers in the same direction as this paper · 86 in the opposite direction
- positive
- positive
- positive
427 papers more in this group
See all 431 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.