Abstract
Wheat seeds of uniform weight selected from 3 batches of seed with phosphorus (P) concentrations of 0.14, 0.17 and 0.19% were sown in soil with a range of applied P treatments. Seedling emergence was more rapid the higher the seed P. By 25 days after sowing all plants grown at the highest concentration of applied P were similar in size, but with lower applied P, plants from seed with higher P concentrations had an advantage. A range of weight classes was selected from 2 batches of seed raised at low or high concentrations of P. There were 11 groups ranging in mean seed weight from 28 to 58 mg and in seed P from 0.13 to 0.37%. Seedlings from the high P batch had larger first leaves, a higher dry weight, and longer roots than those from the low P batch when grown in a highly P-deficient sand culture system. Within each batch, heavier seeds produced larger leaves, heavier plants and longer roots. The yield differences between batches were largely accounted for if the seed P content (¦g P/seed) was considered rather than either percentage P or seed weight alone. Differences in seed nitrogen concentration or content did not consistently account for differences in seedling growth.
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Claims 11
Claim · model-written summary
Wheat seedlings emerged faster from seed with higher phosphorus concentration.
- Taxon
- wheat
Triticum aestivumt0 - Material
- seed Pe0
- Outcome
- Seedling emergencee0
- Direction
- more rapide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling emergence was more rapid the higher the seed P”
t0“wheat seedlings”
Claim · model-written summary
At the highest applied phosphorus concentration, wheat plants from different seed phosphorus groups were similar in size by day 25.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- highest concentration of applied Pe0
- Outcome
- sizee0
- Direction
- similare0
- Qualifier
- 25 days after sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By 25 days after sowing all plants grown at the highest concentration of applied P were similar in size”
t0“wheat seedlings”
Claim · model-written summary
At lower applied phosphorus, wheat seedlings from higher phosphorus seed had a growth advantage.
- Taxon
- wheatTriticum aestivumt0
- Material
- seed with higher P concentrationse0
- Treatment
- lower applied Pe0
- Outcome
- advantagee0
- Direction
- advantagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with lower applied P, plants from seed with higher P concentrations had an advantage”
t0“wheat seedlings”
Claim · model-written summary
High-phosphorus wheat seed produced larger first leaves than low-phosphorus seed in phosphorus-deficient sand.
- Taxon
- wheatTriticum aestivumt0
- Material
- high P batche0
- Outcome
- first leavese0
- Direction
- largere0
- Comparator
- low P batche0
- Setting
- highly P-deficient sand culture systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings from the high P batch had larger first leaves, a higher dry weight, and longer roots than those from the low P batch when grown in a highly P-deficient sand culture system”
t0“wheat seedlings”
Claim · model-written summary
High-phosphorus wheat seed produced higher seedling dry weight than low-phosphorus seed in phosphorus-deficient sand.
- Taxon
- wheatTriticum aestivumt0
- Material
- high P batche0
- Outcome
- dry weighte0
- Direction
- highere0
- Comparator
- low P batche0
- Setting
- highly P-deficient sand culture systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings from the high P batch had larger first leaves, a higher dry weight, and longer roots than those from the low P batch when grown in a highly P-deficient sand culture system”
t0“wheat seedlings”
Claim · model-written summary
High-phosphorus wheat seed produced longer roots than low-phosphorus seed in phosphorus-deficient sand.
- Taxon
- wheatTriticum aestivumt0
- Material
- high P batche0
- Outcome
- rootse0
- Direction
- longere0
- Comparator
- low P batche0
- Setting
- highly P-deficient sand culture systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedlings from the high P batch had larger first leaves, a higher dry weight, and longer roots than those from the low P batch when grown in a highly P-deficient sand culture system”
t0“wheat seedlings”
Claim · model-written summary
Within each phosphorus batch, heavier wheat seeds produced larger leaves.
- Taxon
- wheatTriticum aestivumt0
- Material
- heavier seedse0
- Outcome
- leavese0
- Direction
- largere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within each batch, heavier seeds produced larger leaves, heavier plants and longer roots”
t0“wheat seedlings”
Claim · model-written summary
Within each phosphorus batch, heavier wheat seeds produced heavier plants.
- Taxon
- wheatTriticum aestivumt0
- Material
- heavier seedse0
- Outcome
- plantse0
- Direction
- heaviere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within each batch, heavier seeds produced larger leaves, heavier plants and longer roots”
t0“wheat seedlings”
Claim · model-written summary
Within each phosphorus batch, heavier wheat seeds produced longer roots.
- Taxon
- wheatTriticum aestivumt0
- Material
- heavier seedse0
- Outcome
- rootse0
- Direction
- longere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within each batch, heavier seeds produced larger leaves, heavier plants and longer roots”
t0“wheat seedlings”
Claim · model-written summary
Seed phosphorus content largely accounted for wheat yield differences between seed batches.
- Taxon
- wheatTriticum aestivumt0
- Material
- seed P contente0
- Outcome
- yield differences between batchese0
- Comparator
- percentage P or seed weight alonee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield differences between batches were largely accounted for if the seed P content (¦g P/seed) was considered rather than either percentage P or seed weight alone”
t0“wheat seedlings”
Claim · model-written summary
Seed nitrogen concentration or content did not consistently account for wheat seedling growth differences.
- Taxon
- wheatTriticum aestivumt0
- Material
- seed nitrogen concentration or contente0
- Outcome
- differences in seedling growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in seed nitrogen concentration or content did not consistently account for differences in seedling growth”
t0“wheat seedlings”
The same questions in other papers
phosphorus · growth · Triticum aestivum (wheat)Positive and negative results
34 papers in the same direction as this paper · 158 in the opposite direction
- positive
- positive
- positive
189 papers more in this group
See all 193 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.