Abstract
SummaryTomato plants (cv Suttons Alicante) were subjected to two soil temperatures of about 7° and 22°C with a common air temperature of 22-24°C. “Low” soil temperature markedly reduced root and shoot growth and the quantity of xylem exudate compared with “high” soil temperature.Application of low doses of gibberellic acid (GA3) to the apex of intact plants increased stem length and leaf area. Benzylaminopurine (BAP) did not measurably affect these parameters.In contrast, leaf discs excised from plants grown at “low” soil temperature did increase in area when floated on solutions of either GA3 or BAP. Leaf discs from plants at “high” soil temperature responded only to GA3.Data are presented to show that “low” root temperature leads to alterations in the hormone content of the sap from tomato which may contribute to the observed reduction of shoot growth.
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Claims 6
Claim · model-written summary
Low soil temperature markedly reduced tomato root and shoot growth and xylem exudate quantity compared with high soil temperature.
- Taxon
- Tomato
Solanum lycopersicume0 - Material
- cv Suttons Alicantee0
- Treatment
- soil temperaturee1
- Outcome
- root and shoot growth and the quantity of xylem exudatee1
- Direction
- markedly reducede1
- Comparator
- highe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (cv Suttons Alicante)”
e1““Low” soil temperature markedly reduced root and shoot growth and the quantity of xylem exudate compared with “high” soil temperature”
Claim · model-written summary
Application of low doses of gibberellic acid to the apex of intact tomato plants increased stem length and leaf area.
- Taxon
- TomatoSolanum lycopersicume0
- Material
- cv Suttons Alicantee0
- Treatment
- low doses of gibberellic acid (GA3)e1
- Outcome
- stem length and leaf areae1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (cv Suttons Alicante)”
e1“Application of low doses of gibberellic acid (GA3) to the apex of intact plants increased stem length and leaf area”
Claim · model-written summary
Benzylaminopurine did not measurably affect stem length or leaf area of intact tomato plants.
- Taxon
- TomatoSolanum lycopersicume0
- Material
- cv Suttons Alicantee0
- Treatment
- Benzylaminopurine (BAP)e1
- Outcome
- stem length and leaf areae1
- Direction
- did not measurably affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (cv Suttons Alicante)”
e1“increased stem length and leaf area. Benzylaminopurine (BAP) did not measurably affect these parameters”
Claim · model-written summary
Leaf discs from tomato plants grown at low soil temperature increased in area when floated on GA3 or BAP solutions.
- Taxon
- TomatoSolanum lycopersicume0
- Material
- cv Suttons Alicantee0
- Organ / stage
- leaf discse1
- Treatment
- solutions of either GA3 or BAPe1
- Outcome
- areae1
- Direction
- did increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (cv Suttons Alicante)”
e1“leaf discs excised from plants grown at “low” soil temperature did increase in area when floated on solutions of either GA3 or BAP”
Claim · model-written summary
Leaf discs from tomato plants grown at high soil temperature responded only to GA3.
- Taxon
- TomatoSolanum lycopersicume0
- Material
- cv Suttons Alicantee0
- Organ / stage
- Leaf discse1
- Treatment
- GA3e1
- Outcome
- respondede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (cv Suttons Alicante)”
e1“Leaf discs from plants at “high” soil temperature responded only to GA3”
Claim · model-written summary
Low root temperature may alter the hormone content of tomato sap and so contribute to reduced shoot growth.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- reduction of shoot growthe0
- Qualifier
- alterations in the hormone content of the sape0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data are presented to show that “low” root temperature leads to alterations in the hormone content of the sap from tomato which may contribute to the observed reduction of shoot growth”
The same questions in other papers
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6 papers in the same direction as this paper · 35 in the opposite direction
- positive
- positive
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See all 42 papers →gibberellin A3 · growth · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
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See all 8 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.