Abstract
Conflicting reports exist about the effect of N supply on the rate of leaf emergence. We examined effects of N deficiency on leaf and tiller emergence, tiller initiation and apical development in ‘Aroona’ and ‘Gamenya’ spring wheat ( Triticum aestivum L.). Four levels of N (e.g., 50 μM N = N 50 ) were supplied by hourly irrigation with complete nutrient solution of plants growing in sand. The control plants in Exp. 1 (N 1600 ) had 64 g kg ‐1 N intheshoots at the two‐leaf stag e, compared with 33 in N 50 , 50 in N 300 , and 58 in N 800 . Compared with control plants, dry matter of N 50 plants was 10%, N 300 50%, and N 800 80%. Results in Exp. 2 were similar. The rate of leaf emergence was decreased in all N 50 ‐treated and some N 200 ‐treated plants, but not or N 300 ‐treated plants. Tiller bud initiation was decreased in the treatment. The number of tiller buds was correlated with total number of leaves; if a leaf emerged, N deficiency did not affect tiller initiation. Nitrogen treatment did not alter the sequence of tiller emergence, but tiller emergence was delayed or did not occur in N 50 , N 200 , and N 300 plants. Nitrogen treatment had little effect on the rate of apical development. The double‐ridge stage of development was delayed ≈2 d for both cultivars at the two lowest N treatments. Terminal spikelet production was also delayed by ≈2 d at these N treatments in Aroona, but not in Gamenya spring wheat. The rate of primordia initiation was decreased in N 50 and N 300 plants, resulting in fewer spikelet primordia. The level of N deficiency affected plant response to the stress.
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
Leaf emergence rate was decreased in N 50 plants.
- Taxon
- spring wheat
Triticum aestivume1 - Treatment
- N 50e2
- Outcome
- rate of leaf emergencee2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“The rate of leaf emergence was decreased in all N 50”
Claim · model-written summary
Nitrogen treatment had little effect on the rate of apical development.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- Nitrogen treatmente2
- Outcome
- rate of apical developmente2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Nitrogen treatment had little effect on the rate of apical development”
Claim · model-written summary
The double-ridge stage of development was delayed by about 2 d for both cultivars at the two lowest N treatments.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- two lowest N treatmentse2
- Outcome
- stage of developmente2
- Direction
- delayede2
- Value
- ≈2 de2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“stage of development was delayed ≈2 d for both cultivars at the two lowest N treatments”
Claim · model-written summary
Terminal spikelet production was delayed by about 2 d at these N treatments in Aroona.
- Taxon
- spring wheatTriticum aestivume1
- Material
- Aroonae2
- Treatment
- these N treatmentse2
- Outcome
- Terminal spikelet productione2
- Direction
- delayede2
- Value
- ≈2 de2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Terminal spikelet production was also delayed by ≈2 d at these N treatments in Aroona, but not in Gamenya spring wheat”
Claim · model-written summary
Terminal spikelet production was not delayed at these N treatments in Gamenya.
- Taxon
- spring wheatTriticum aestivume1
- Material
- Gamenyae2
- Treatment
- these N treatmentse2
- Outcome
- Terminal spikelet productione2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Terminal spikelet production was also delayed by ≈2 d at these N treatments in Aroona, but not in Gamenya spring wheat”
Claim · model-written summary
The rate of primordia initiation was decreased in N 50 and N 300 plants.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 50 and N 300e2
- Outcome
- rate of primordia initiatione2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“The rate of primordia initiation was decreased in N 50 and N 300 plants, resulting in fewer spikelet primordia”
Claim · model-written summary
N 50 and N 300 treatments resulted in fewer spikelet primordia.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 50 and N 300e2
- Outcome
- spikelet primordiae2
- Direction
- fewere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“The rate of primordia initiation was decreased in N 50 and N 300 plants, resulting in fewer spikelet primordia”
Claim · model-written summary
Tiller bud initiation was decreased under N deficiency.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- the treatmente2
- Outcome
- Tiller bud initiatione2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Tiller bud initiation was decreased in the treatment”
Claim · model-written summary
The number of tiller buds was correlated with the total number of leaves.
- Taxon
- spring wheatTriticum aestivume1
- Organ / stage
- tiller budse2
- Outcome
- number of tiller budse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“The number of tiller buds was correlated with total number of leaves”
Claim · model-written summary
If a leaf emerged, N deficiency did not affect tiller initiation.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N deficiencye2
- Outcome
- tiller initiatione2
- Direction
- no_changeinferrede2
- Qualifier
- if a leaf emergede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“if a leaf emerged, N deficiency did not affect tiller initiation”
Claim · model-written summary
Nitrogen treatment did not alter the sequence of tiller emergence.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- Nitrogen treatmente2
- Outcome
- sequence of tiller emergencee2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Nitrogen treatment did not alter the sequence of tiller emergence”
Claim · model-written summary
Tiller emergence was delayed or absent in N 50, N 200 and N 300 plants.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 50 , N 200 , and N 300e2
- Outcome
- tiller emergencee2
- Direction
- delayede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“tiller emergence was delayed or did not occur in N 50 , N 200 , and N 300 plants”
Claim · model-written summary
Dry matter of N 50 plants was about 10% of control plants.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 50e2
- Outcome
- dry mattere2
- Direction
- lowerinferrede2
- Value
- 10%e2
- Comparator
- control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Compared with control plants, dry matter of N 50 plants was 10%, N 300 50%, and N 800 80%”
Claim · model-written summary
Dry matter of N 300 plants was about 50% of control plants.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 300e2
- Outcome
- dry mattere2
- Direction
- lowerinferrede2
- Value
- 50%e2
- Comparator
- control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Compared with control plants, dry matter of N 50 plants was 10%, N 300 50%, and N 800 80%”
Claim · model-written summary
Dry matter of N 800 plants was about 80% of control plants.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- N 800e2
- Outcome
- dry mattere2
- Direction
- lowerinferrede2
- Value
- 80%e2
- Comparator
- control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“spring wheat ( Triticum aestivum L.)”
e2“Compared with control plants, dry matter of N 50 plants was 10%, N 300 50%, and N 800 80%”
The same questions in other papers
nitrogen · growth · Triticum aestivum (wheat)Positive and negative results
124 papers in the same direction as this paper · 426 in the opposite direction
- positive
- positive
- positive
547 papers more in this group
See all 551 papers →nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
323 papers in the same direction as this paper · 1,737 in the opposite direction
- positive
- positive
- negative
2,057 papers more in this group
See all 2,061 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.