Abstract
Abstract Plant senescence studies have indicated that internal competition for nutrients such as carbon (C) and nitrogen (N) can be an important factor in the initiation of senescence. A greenhouse experiment was conducted to determine the effect of increased supplies of C and N on senescence of soybean (Glycine max [L.] Merr) plants. Soybean plants were injected with solutions of sucrose (150gL‐1), N (15 mM N), and distilled water from the onset of flowering until senescence using a modified stem injection technique. The average uptake rate of all solutions was 1.3 mL d‐1 per plant. The plants injected with sucrose accumulated the most biomass, followed by those injected with N and distilled water. Soybean plants injected with sucrose senesced 17 days later than the distilled water control while senescence was not delayed for plants injected with N. Injection of either N or sucrose increased the concentration and content of N in soybean plants. The results indicated that intra‐plant‐competition for reduced C plays an important role in plant senescence. Because the total amount of N injected was only 2% of the total plant N, as compared to 31 % for C, the role of intra‐plant competition for N was less clear.
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 6
Claim · model-written summary
Sucrose-injected soybean accumulated the most biomass, followed by nitrogen-injected and water-injected plants.
- Taxon
- soybean
Glycine maxt0 - Treatment
- injected with sucrosee0
- Outcome
- biomasse0
- Direction
- moste0
- Comparator
- those injected with N and distilled watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“The plants injected with sucrose accumulated the most biomass, followed by those injected with N and distilled water.”
Claim · model-written summary
Sucrose injection delayed soybean senescence by 17 days versus water.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- injected with sucrosee0
- Outcome
- senescede0
- Direction
- latere0
- Value
- 17 dayse0
- Comparator
- distilled water controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“Soybean plants injected with sucrose senesced 17 days later than the distilled water control”
Claim · model-written summary
Nitrogen injection did not delay soybean senescence.
- Taxon
- soybeanGlycine maxt0
- Treatment
- injected with Ne0
- Outcome
- senescencee0
- Direction
- not delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“senescence was not delayed for plants injected with N”
Claim · model-written summary
Nitrogen injection increased soybean nitrogen concentration and content.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Injection of either N or sucrosee0
- Outcome
- concentration and content of Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“Injection of either N or sucrose increased the concentration and content of N in soybean plants.”
Claim · model-written summary
Sucrose injection increased soybean nitrogen concentration and content.
- Taxon
- soybeanGlycine maxe0
- Treatment
- sucrosee0
- Outcome
- concentration and content of Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“Injection of either N or sucrose increased the concentration and content of N in soybean plants.”
Claim · model-written summary
The results indicate competition for reduced carbon contributes to soybean senescence.
- Taxon
- soybeanGlycine maxt0
- Outcome
- plant senescencee0
- Qualifier
- intra‐plant‐competition for reduced Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“to soybean through stem injection”
e0“intra‐plant‐competition for reduced C plays an important role in plant senescence”
The same questions in other papers
sucrose · molecular: metabolites · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →sucrose · growth · Glycine max (soybean)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →application · molecular: metabolites · Glycine max (soybean)Positive and negative results
39 papers in the same direction as this paper · 10 in the opposite direction
- negative
- negative
- no effect
46 papers more in this group
See all 50 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.