Abstract
Abstract The effects of different calcium (Ca) concentrations in the nutrient solution and of air relative humidity (RH) on the Ca levels and on the incidence of blossom‐end rot in tomato fruit cv. Jumbo were studied. The experiment was conducted in a greenhouse under hydroponic conditions using a modified Hoagland solution containing different Ca concentrations (0.2, 2.5, 5.0, 10.0, 15.0, and 20.0 mm L‐1) which represented the different treatments. The trial was conducted in a fully randomized design with three replications, with Ca doses representing the plots and environments with high and low RH the subplots. The fruits of the second and third clusters were used, with two fruits per cluster, one maintained at high (90±5%) and the other at low (40±5%) RH. The fruits were picked after full ripening. A greater Ca accumulation was observed in fruits submitted to low RH with this accumulation occurring at all Ca levels in the solution. In the treatment with 100 mg Ca L‐1, the plants died and did not reach fructification. The fruits of plants treated with 100 mg Ca L‐1 and submitted to low RH had blossom‐end rot although their Ca levels were higher than those detected in the fruits of this treatment submitted to high RH. At this Ca dose, the seeds were small, malformed, and black. Our results show that fruit kept at low RH had higher Ca accumulation although the excessive water loss from tissues may lead to blossom‐end rot when low Ca doses are supplied to the plants.
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Claims 5
Claim · model-written summary
Tomato fruit kept at low air humidity (40±5% RH) had higher calcium accumulation than fruit at high humidity (90±5%).
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- low (40±5%) RHe3
- Outcome
- Ca accumulatione6
- Direction
- highere6
- Comparator
- high (90±5%)e3
- Setting
- greenhouse under hydroponic conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“incidence of blossom‐end rot in tomato fruit cv. Jumbo”
e2“The experiment was conducted in a greenhouse under hydroponic conditions”
e3“one maintained at high (90±5%) and the other at low (40±5%) RH”
e6“fruit kept at low RH had higher Ca accumulation”
Claim · model-written summary
Tomato plants receiving 100 mg Ca L‐1 died and did not reach fructification.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 100 mg Ca L‐1e5
- Outcome
- plants diede5
- Setting
- greenhouse under hydroponic conditionse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“incidence of blossom‐end rot in tomato fruit cv. Jumbo”
e2“The experiment was conducted in a greenhouse under hydroponic conditions”
e5“In the treatment with 100 mg Ca L‐1, the plants died and did not reach fructification”
Claim · model-written summary
Tomato fruit from plants given 100 mg Ca L‐1 with low humidity had blossom‐end rot, although their Ca levels were higher than in high-humidity fruit.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 100 mg Ca L‐1 and submitted to low RHe7
- Outcome
- blossom‐end rote7
- Qualifier
- Ca levels were higher than those detected in the fruits of this treatment submitted to high RHe3
- Setting
- greenhouse under hydroponic conditionse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“incidence of blossom‐end rot in tomato fruit cv. Jumbo”
e2“The experiment was conducted in a greenhouse under hydroponic conditions”
e7“The fruits of plants treated with 100 mg Ca L‐1 and submitted to low RH had blossom‐end rot”
e3“although their Ca levels were higher than those detected in the fruits of this treatment submitted to high RH”
Claim · model-written summary
Seeds from tomato plants given 100 mg Ca L‐1 were small, malformed and black.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 100 mg Ca L‐1e5
- Outcome
- seedse3
- Qualifier
- small, malformed, and blacke3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“incidence of blossom‐end rot in tomato fruit cv. Jumbo”
e5“In the treatment with 100 mg Ca L‐1, the plants died and did not reach fructification”
e3“At this Ca dose, the seeds were small, malformed, and black”
Claim · model-written summary
Excessive water loss from tissues may lead to blossom‐end rot in tomato when low Ca doses are supplied.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- low Ca dosese2
- Outcome
- blossom‐end rote2
- Qualifier
- excessive water loss from tissuese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“incidence of blossom‐end rot in tomato fruit cv. Jumbo”
e2“the excessive water loss from tissues may lead to blossom‐end rot when low Ca doses are supplied to the plants”
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