Abstract
The accumulation and partitioning of dry matter and nitrogen were examined in the developing tassel and two uppermost ear shoots of field-grown maize under varying levels of applied nitrogen and times of sowing. Accumulation of dry matter and nitrogen within an axillary branch always favoured the ear over the husk and shank. Dry matter and nitrogen accumulated faster in the first ear than in the tassel or second ear and the partitioning between inflorescences of dry matter and nitrogen was not affected by treatment. The relative rate of growth, RGR(dry matter), of the first and second ear shoots increased by up to 42% at high levels of applied nitrogen and with early sowing. In contrast, the relative rate of accumulation of nitrogen (RNAR) was not sensitive to N supply, although it was reduced, on average, by 22% at the late time of sowing. We conclude that accumulation, but not partitioning, of dry matter and nitrogen between developing inflorescences of maize are altered by nitrogen application, time of sowing, and position of the inflorescence on the stem.
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
Dry matter and nitrogen partitioning within axillary branches favored ears over husks and shanks.
- Organ / stage
- eare0
- Outcome
- Accumulation of dry matter and nitrogene0
- Direction
- favourede0
- Comparator
- husk and shanke0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accumulation of dry matter and nitrogen within an axillary branch always favoured the ear over the husk and shank.”
e1“field-grown maize”
Claim · model-written summary
Dry matter accumulated faster in the first ear than in the tassel or second ear.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter and nitrogen accumulated faster in the first ear than in the tassel or second ear”
e1“field-grown maize”
Claim · model-written summary
Nitrogen accumulated faster in the first ear than in the tassel or second ear.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter and nitrogen accumulated faster in the first ear than in the tassel or second ear”
e1“field-grown maize”
Claim · model-written summary
Treatment did not affect dry matter and nitrogen partitioning between inflorescences.
- Treatment
- varying levels of applied nitrogen and times of sowinge2
- Outcome
- partitioning between inflorescences of dry matter and nitrogene0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the partitioning between inflorescences of dry matter and nitrogen was not affected by treatment.”
e1“field-grown maize”
e2“varying levels of applied nitrogen and times of sowing”
Claim · model-written summary
High nitrogen increased ear shoot relative growth rate by up to 42%.
- Organ / stage
- first and second ear shootse0
- Treatment
- high levels of applied nitrogene0
- Outcome
- relative rate of growth, RGR(dry matter)e0
- Direction
- increasede0
- Value
- up to 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative rate of growth, RGR(dry matter), of the first and second ear shoots increased by up to 42% at high levels of applied nitrogen and with early sowing.”
e1“field-grown maize”
Claim · model-written summary
Early sowing increased ear shoot relative growth rate by up to 42%.
- Organ / stage
- first and second ear shootse0
- Treatment
- early sowinge0
- Outcome
- relative rate of growth, RGR(dry matter)e0
- Direction
- increasede0
- Value
- up to 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative rate of growth, RGR(dry matter), of the first and second ear shoots increased by up to 42% at high levels of applied nitrogen and with early sowing.”
e1“field-grown maize”
Claim · model-written summary
Nitrogen supply did not affect relative nitrogen accumulation rate.
- Treatment
- N supplye0
- Outcome
- relative rate of accumulation of nitrogen (RNAR)e0
- Direction
- not sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative rate of accumulation of nitrogen (RNAR) was not sensitive to N supply”
e1“field-grown maize”
Claim · model-written summary
Late sowing reduced relative nitrogen accumulation rate by 22% on average.
- Treatment
- late time of sowinge0
- Outcome
- relative rate of accumulation of nitrogen (RNAR)e1
- Direction
- reducede0
- Value
- 22%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was reduced, on average, by 22% at the late time of sowing.”
e1“relative rate of accumulation of nitrogen (RNAR)”
e2“field-grown maize”
The same questions in other papers
sowing time · molecular: metabolites · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →sowing time · growth · Zea mays (maize)Positive and negative results
37 papers in the same direction as this paper · 27 in the opposite direction
- negative
- no effect
- no effect
61 papers more in this group
See all 65 papers →nitrogen · molecular: metabolites · Zea mays (maize)Positive and negative results
46 papers in the same direction as this paper · 95 in the opposite direction
- positive
- positive
- positive
138 papers more in this group
See all 142 papers →nitrogen · growth · Zea mays (maize)Positive and negative results
618 papers in the same direction as this paper · 115 in the opposite direction · 14 reporting no difference from an alternative
- negative
- no effect
- negative
744 papers more in this group
See all 748 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.