Abstract
Seedlings of the tomato Lycopersicon esculentum Mill. cv. Michigan-Ohio Hybrid were grown in perlite in plastic containers in a growth chamber. Maximum growth (dry weight and stem girth) was obtained under the higher substrate temperatures (24 C and 29 C) and the higher light intensity (16.2 × 10 3 lx) with an enhanced effect from high substrate potassium (12 meq K +/liter). Higher light intensity, coupled with higher potassium and higher substrate temperature, hastened maturity of the first flower buds. Total content of magnesium and calcium in the aerial portions of the plants was affected mainly by substrate temperature. Total content of potassium was, of course, influenced by potassium substrate levels as well as by substrate temperature. For all three cations, the content in plants grown at the lowest substrate temperature (13 C) was significantly lower than at the higher temperatures. However, when the uptake of these ions was expressed as percentage of dry weight, the differences due to substrate temperature disappeared, and differences due to light intensity and substrate potassium levels became evident.
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Claims 7
Claim · model-written summary
Higher substrate temperature and light, enhanced by potassium, maximized dry weight and stem girth.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- higher substrate temperatures (24 C and 29 C) and the higher light intensity (16.2 × 10 3 lx)e0
- Outcome
- growth (dry weight and stem girth)e0
- Direction
- Maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum growth (dry weight and stem girth) was obtained under the higher substrate temperatures (24 C and 29 C) and the higher light intensity (16.2 × 10 3 lx) with an enhanced effect from high substrate potassium (12 meq K +/liter)”
t0“TOMATO PLANTS”
Claim · model-written summary
Higher light, potassium and temperature hastened first flower bud maturity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Higher light intensity, coupled with higher potassium and higher substrate temperaturee0
- Outcome
- maturity of the first flower budse0
- Direction
- hastenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher light intensity, coupled with higher potassium and higher substrate temperature, hastened maturity of the first flower buds”
t0“TOMATO PLANTS”
Claim · model-written summary
Substrate temperature mainly affected aerial magnesium and calcium content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- substrate temperaturee0
- Outcome
- Total content of magnesium and calciume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total content of magnesium and calcium in the aerial portions of the plants was affected mainly by substrate temperature”
t0“TOMATO PLANTS”
Claim · model-written summary
Potassium substrate level and temperature influenced plant potassium content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- potassium substrate levelse0
- Outcome
- Total content of potassiume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total content of potassium was, of course, influenced by potassium substrate levels as well as by substrate temperature”
t0“TOMATO PLANTS”
Claim · model-written summary
All three cation contents were lower at 13 C than higher temperatures.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- lowest substrate temperature (13 C)e0
- Outcome
- content in plantse0
- Direction
- lowere0
- Comparator
- higher temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all three cations, the content in plants grown at the lowest substrate temperature (13 C) was significantly lower than at the higher temperatures”
t0“TOMATO PLANTS”
Claim · model-written summary
Temperature differences disappeared when ion uptake was expressed per dry weight.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- uptake of these ionse0
- Direction
- disappearede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the uptake of these ions was expressed as percentage of dry weight, the differences due to substrate temperature disappeared”
t0“TOMATO PLANTS”
Claim · model-written summary
Dry weight normalized ion uptake differed by light intensity and potassium level.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- light intensity and substrate potassium levelse0
- Outcome
- differencese0
- Direction
- became evidente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences due to light intensity and substrate potassium levels became evident”
t0“TOMATO PLANTS”
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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.