Abstract
Studies of ethylene evolution by tomato ( Lycopersicon esculentum Mill.) fruit were conducted with plants receiving NH 4 -N or NO 3 -N nutrition. Fruit of plants grown with NH 4 -N had a higher occurrence of blossom-end rot (BER), higher NH 4 -N concentrations, and higher ethylene evolution rates than fruit from plants grown with NO 3 -N. Fruit of plants grown with NO 3 -N showed no enhancement in ethylene evolution with BER development. Fertilizing these plants with Ca(NO 3 ) 2 doubled the average Ca concentration of fruit and restricted BER development. Ammonium suppressed Ca accumulation in fruit relative to those grown with NO 3 -N. Ethylene evolution increased as fruit from plants receiving NO 3 -N ripened, but without a concomitant increase in NH 4 -N concentrations in the fruit. Ammonium accumulation in fruit induced BER and enhanced ethylene evolution. These relationships were unique, for NH 4 -N accumulation did not seem to be a naturally occurring phenomenon in ripening fruit or in fruit that have BER arising from other causal factors.
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
Tomato fruit of plants grown with NH4-N had a higher occurrence of blossom-end rot than fruit from plants grown with NO3-N.
- Taxon
- Tomatoes
Solanum lycopersicumt0 - Treatment
- NH 4 -Ne0
- Outcome
- occurrence of blossom-end rot (BER)e0
- Direction
- highere0
- Comparator
- NO 3 -Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit of plants grown with NH 4 -N had a higher occurrence of blossom-end rot (BER), higher NH 4 -N concentrations, and higher ethylene evolution rates than fruit from plants grown with NO 3 -N”
t0“Tomatoes”
Claim · model-written summary
Tomato fruit of plants grown with NH4-N had higher NH4-N concentrations than fruit from plants grown with NO3-N.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- NH 4 -Ne0
- Outcome
- NH 4 -N concentrationse0
- Direction
- highere0
- Comparator
- NO 3 -Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit of plants grown with NH 4 -N had a higher occurrence of blossom-end rot (BER), higher NH 4 -N concentrations, and higher ethylene evolution rates than fruit from plants grown with NO 3 -N”
t0“Tomatoes”
Claim · model-written summary
Tomato fruit of plants grown with NH4-N had higher ethylene evolution rates than fruit from plants grown with NO3-N.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- NH 4 -Ne0
- Outcome
- ethylene evolution ratese0
- Direction
- highere0
- Comparator
- NO 3 -Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit of plants grown with NH 4 -N had a higher occurrence of blossom-end rot (BER), higher NH 4 -N concentrations, and higher ethylene evolution rates than fruit from plants grown with NO 3 -N”
t0“Tomatoes”
Claim · model-written summary
Fruit of tomato plants grown with NO3-N showed no enhancement in ethylene evolution with BER development.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- NO 3 -Ne0
- Outcome
- ethylene evolutione0
- Direction
- no enhancemente0
- Qualifier
- BER developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit of plants grown with NO 3 -N showed no enhancement in ethylene evolution with BER development”
t0“Tomatoes”
Claim · model-written summary
Fertilizing tomato plants with Ca(NO3)2 doubled the average Ca concentration of fruit.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- Ca(NO 3 ) 2e0
- Outcome
- average Ca concentration of fruite0
- Direction
- doublede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizing these plants with Ca(NO 3 ) 2 doubled the average Ca concentration of fruit”
t0“Tomatoes”
Claim · model-written summary
Fertilizing tomato plants with Ca(NO3)2 restricted BER development.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- Ca(NO 3 ) 2e0
- Outcome
- BER developmente0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizing these plants with Ca(NO 3 ) 2 doubled the average Ca concentration of fruit and restricted BER development”
t0“Tomatoes”
Claim · model-written summary
Ammonium suppressed Ca accumulation in tomato fruit relative to fruit of plants grown with NO3-N.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- Ammoniume0
- Outcome
- Ca accumulation in fruite0
- Direction
- suppressede0
- Comparator
- NO 3 -Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium suppressed Ca accumulation in fruit relative to those grown with NO 3 -N”
t0“Tomatoes”
Claim · model-written summary
Ethylene evolution increased as fruit from NO3-N plants ripened, without a concomitant increase in fruit NH4-N concentrations.
- Taxon
- TomatoesSolanum lycopersicumt0
- Outcome
- Ethylene evolutione0
- Direction
- increasede0
- Qualifier
- without a concomitant increase in NH 4 -N concentrations in the fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene evolution increased as fruit from plants receiving NO 3 -N ripened, but without a concomitant increase in NH 4 -N concentrations in the fruit”
t0“Tomatoes”
Claim · model-written summary
The authors conclude that ammonium accumulation in fruit induced BER and enhanced ethylene evolution.
- Taxon
- TomatoesSolanum lycopersicumt0
- Compound
- Ammoniume0
- Outcome
- BER and enhanced ethylene evolutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium accumulation in fruit induced BER and enhanced ethylene evolution”
t0“Tomatoes”
The same questions in other papers
calcium atom · disease · Solanum lycopersicum (tomato)Results differ
34 papers in the same direction as this paper · 14 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
46 papers more in this group
See all 50 papers →calcium atom · nutrient: content · Solanum lycopersicum (tomato)Results differ
42 papers in the same direction as this paper · 10 in the opposite direction
- negative
- no effect
- no effect
49 papers more in this group
See all 53 papers →nitrogen · nutrient: content · Solanum lycopersicum (tomato)Results differ
17 papers in the same direction as this paper · 59 in the opposite direction
- negative
- positive
- positive
73 papers more in this group
See all 77 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.