Abstract
Tomato and cucumber seedlings were grown in a growth chamber to evaluate the effects of different cycles of light–dark exposure conditions (T0 (control treatment) (1 cycle of 24 h distributed in 18 h of light exposure and six hours of dark), T1 (two cycles of 12 h distributed in nine hours of light exposure and three hours of dark) and T2 (three cycles of eight hours distributed in six hours of light exposure and two hours of dark) on growth, nutrient status, pigment concentration and physiological changes. Total dry weight showed different behaviors in both species, since in tomato the total dry weight remained unchanged under varying light–dark cycles, whereas in cucumber seedlings there was a clear decrease compared to the control treatment. In both species, plants grown under T2 showed the best water content. Nitrogen, P and K content—as well as partitioning in the different organs of the plants—displayed different patterns under varying cycles of light–dark conditions in both species. Chlorophyll (b and a + b) concentration decreased significantly in both species in T1 and T2 compared to the control treatment (T0). At physiological level, the concentration of total soluble sugars and proline in leaf showed the highest value in the control treatment with 18 h of light and six hours of dark.
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Claims 6
Claim · model-written summary
Tomato dry weight was unchanged across light-dark cycles.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- varying light–dark cyclese0
- Outcome
- total dry weighte0
- Direction
- remained unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry weight showed different behaviors in both species, since in tomato the total dry weight remained unchanged under varying light–dark cycles, whereas in cucumber seedlings there was a clear decrease compared to the control treatment.”
Claim · model-written summary
Cucumber dry weight decreased relative to control.
- Taxon
- cucumber seedlings
Cucumis sativuse0 - Treatment
- varying light–dark cyclese0
- Outcome
- total dry weighte0
- Direction
- decreasee0
- Comparator
- the control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry weight showed different behaviors in both species, since in tomato the total dry weight remained unchanged under varying light–dark cycles, whereas in cucumber seedlings there was a clear decrease compared to the control treatment.”
Claim · model-written summary
T2 yielded best water content in tomato and cucumber.
- Taxon
- Tomato and cucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- T2e0
- Outcome
- water contente0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both species, plants grown under T2 showed the best water content.”
t0“Tomato and Cucumber Seedlings”
Claim · model-written summary
Nitrogen, P and K content and partitioning had different patterns across cycles.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- varying cycles of light–dark conditionse0
- Outcome
- Nitrogen, P and K contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen, P and K content—as well as partitioning in the different organs of the plants—displayed different patterns under varying cycles of light–dark conditions in both species.”
t0“Tomato and Cucumber Seedlings”
Claim · model-written summary
Chlorophyll b and a+b declined significantly under T1 and T2 versus T0 in both species.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- T1 and T2e0
- Outcome
- Chlorophyll (b and a + b) concentratione0
- Direction
- decreasede0
- Comparator
- the control treatment (T0)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll (b and a + b) concentration decreased significantly in both species in T1 and T2 compared to the control treatment (T0).”
t0“Tomato and Cucumber Seedlings”
Claim · model-written summary
Leaf soluble sugar and proline concentrations were highest under control conditions.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- the control treatment with 18 h of light and six hours of darke0
- Outcome
- total soluble sugars and proline in leafe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At physiological level, the concentration of total soluble sugars and proline in leaf showed the highest value in the control treatment with 18 h of light and six hours of dark.”
t0“Tomato and Cucumber Seedlings”
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