Abstract
SummaryTo determine the influence of potassium levels in the nutrient solution on lycopene content, tomato plants were grown in a soil-less system using rockwool slabs as substrate. Two growing seasons were studied with the aim of comparing three potassium levels: low, medium and high (corresponding to 150, 300 and 450 mg K l–1 in the nutrient solution). In the first growing season (Spring–Summer), two high-pigment cultivars of tomato (Solanum lycopersicum L.,‘SVR’ and ‘Kabiria’) were compared. In the second growing season (Summer–Winter) ‘Esperanza’, a non high-pigment hybrid and the two previous cultivars were used. Total fruit yield was higher in the Summer–Winter growing season than in the Spring–Summer season, but was not influenced by potassium nutrition. Growing season, potassium level, and the genetic traits of the cultivars influenced the principal quality parameters of fruit, with higher dry matter and total soluble solids contents in the first growing season, correlating with lower lycopene and K+ contents in the fruit. The lycopene content increased linearly with increasing potassium level in the nutrient solution. The high-pigment genotypes showed a higher lycopene content than ‘Esperanza’. The higher lycopene content in ‘Kabiria’ fruit can also be related to the size of the fruit.
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Claims 7
Claim · model-written summary
Tomato fruit yield was higher in Summer–Winter than Spring–Summer.
- Taxon
- tomato
Solanum lycopersicumt0 - Outcome
- Total fruit yielde0
- Direction
- highere0
- Comparator
- Spring–Summer seasone0
- Setting
- Summer–Winter growing seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total fruit yield was higher in the Summer–Winter growing season than in the Spring–Summer season”
t0“tomato fruit”
Claim · model-written summary
Potassium nutrition did not influence tomato fruit yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- potassium nutritione0
- Outcome
- Total fruit yielde0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total fruit yield was higher in the Summer–Winter growing season than in the Spring–Summer season, but was not influenced by potassium nutrition”
t0“tomato fruit”
Claim · model-written summary
Tomato dry matter and soluble solids were higher in the first growing season.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- dry matter and total soluble solids contentse0
- Direction
- highere0
- Setting
- first growing seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher dry matter and total soluble solids contents in the first growing season”
t0“tomato fruit”
Claim · model-written summary
Higher dry matter and soluble solids in tomato correlated with lower fruit lycopene and K+ content.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- lycopene and K+ contents in the fruite0
- Direction
- lowere0
- Setting
- first growing seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher dry matter and total soluble solids contents in the first growing season, correlating with lower lycopene and K+ contents in the fruit”
t0“tomato fruit”
Claim · model-written summary
Tomato fruit lycopene increased linearly with potassium level.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increasing potassium level in the nutrient solutione0
- Outcome
- lycopene contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lycopene content increased linearly with increasing potassium level in the nutrient solution”
t0“tomato fruit”
Claim · model-written summary
High-pigment tomato genotypes had higher lycopene content than Esperanza.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- high-pigment genotypese0
- Outcome
- lycopene contente0
- Direction
- highere0
- Comparator
- ‘Esperanza’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high-pigment genotypes showed a higher lycopene content than ‘Esperanza’”
t0“tomato fruit”
Claim · model-written summary
Lycopene content in Kabiria fruit was related to fruit size.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- ‘Kabiria’e0
- Organ / stage
- fruite0
- Outcome
- lycopene contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher lycopene content in ‘Kabiria’ fruit can also be related to the size of the fruit”
t0“tomato fruit”
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