Abstract
Abstract Two Ca‐efficient and 3 Ca‐inefficient tomato lines selected on the basis of dry matter production, Ca concentrations in tissues, and severity of Ca deficiency symptoms were grown in nutrient solutions containing 6 levels of total Ca ranging from 15 to 365 mg in 70 mg increments. All lines responded to increased Ca supply by increasing in dry weight and by accumulating Ca. The critical Ca concentrations in the shoots were 0.25% and 0.40% on a dry weight basis for the efficient and inefficient lines, respectively. Concentrations of Ca, K, Mg, P, and NO3 ‐ were lower in shoots and except for Mg were lower in roots of efficient plants than in the inefficient plants. For all lines as more Ca was available in the media and as Ca increased in the shoots and roots, the concentrations of the nutrients other than Ca declined. The declines in concentrations of K and Mg were not due to dilution by higher dry matter production in the efficient lines relative to the inefficient ones, although the total accumulation of Ca, P, and NO3 ‐ did not vary with Ca supplied. Antagonism among cations may account for differences in efficiency among lines of tomato.
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Claims 10
Claim · model-written summary
All lines gained dry weight with increased calcium supply.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- increased Ca supplye0
- Outcome
- dry weighte0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All lines responded to increased Ca supply by increasing in dry weight”
t0“tomato”
Claim · model-written summary
All lines accumulated more calcium with increased calcium supply.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased Ca supplye0
- Outcome
- accumulating Cae0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All lines responded to increased Ca supply by increasing in dry weight and by accumulating Ca.”
t0“tomato”
Claim · model-written summary
Critical shoot calcium concentration was 0.25% in efficient lines.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- efficiente0
- Organ / stage
- shootse0
- Outcome
- critical Ca concentrations in the shootse0
- Value
- 0.25%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical Ca concentrations in the shoots were 0.25% and 0.40% on a dry weight basis for the efficient and inefficient lines, respectively.”
t0“tomato”
Claim · model-written summary
Critical shoot calcium concentration was 0.40% in inefficient lines.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- inefficient linese0
- Organ / stage
- shootse0
- Outcome
- critical Ca concentrations in the shootse0
- Value
- 0.40%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The critical Ca concentrations in the shoots were 0.25% and 0.40% on a dry weight basis for the efficient and inefficient lines, respectively.”
t0“tomato”
Claim · model-written summary
Efficient lines had lower shoot Ca, K, Mg, P and nitrate concentrations than inefficient lines.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- efficient plantse0
- Organ / stage
- shootse0
- Outcome
- Concentrations of Ca, K, Mg, P, and NO3 ‐e0
- Direction
- lowere0
- Comparator
- inefficient plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of Ca, K, Mg, P, and NO3 ‐ were lower in shoots and except for Mg were lower in roots of efficient plants than in the inefficient plants.”
t0“tomato”
Claim · model-written summary
Efficient lines had lower root Ca, K, P and nitrate concentrations than inefficient lines.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- efficient plantse0
- Organ / stage
- rootse0
- Outcome
- Concentrations of Ca, K, Mg, P, and NO3 ‐e0
- Direction
- lowere0
- Qualifier
- except for Mge0
- Comparator
- inefficient plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of Ca, K, Mg, P, and NO3 ‐ were lower in shoots and except for Mg were lower in roots of efficient plants than in the inefficient plants.”
t0“tomato”
Claim · model-written summary
Increasing calcium availability and tissue calcium accompanied declines in other nutrient concentrations.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- more Ca was available in the mediae0
- Outcome
- concentrations of the nutrients other than Cae0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all lines as more Ca was available in the media and as Ca increased in the shoots and roots, the concentrations of the nutrients other than Ca declined.”
t0“tomato”
Claim · model-written summary
The K and Mg concentration declines were not explained by dilution from dry matter production.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- declines in concentrations of K and Mge0
- Qualifier
- not due to dilution by higher dry matter productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The declines in concentrations of K and Mg were not due to dilution by higher dry matter production in the efficient lines relative to the inefficient ones”
t0“tomato”
Claim · model-written summary
Total Ca, P and nitrate accumulation did not vary with supplied calcium.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ca suppliede0
- Outcome
- total accumulation of Ca, P, and NO3 ‐e0
- Direction
- did not varye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total accumulation of Ca, P, and NO3 ‐ did not vary with Ca supplied.”
t0“tomato”
Claim · model-written summary
The authors suggest cation antagonism may explain calcium efficiency differences among lines.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- differences in efficiencye0
- Qualifier
- Antagonism among cationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antagonism among cations may account for differences in efficiency among lines of tomato.”
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See all 22 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.