Abstract
Lettuce is an important agricultural plant which is often cultivated under artificial illumination including light of light emitting diodes (LEDs). Spectrum and intensity of used illumination and duration of photoperiod can strongly influence a final lettuce biomass; their effects can be interacted. It means that search of optimal light conditions is complicated problem for experimental investigations because numerous combinations of light conditions should be analyzed. A mathematical model of lettuce productivity can provide the potential tool for intensification of this search; earlier, we preliminarily proposed the minimal model of lettuce productivity under the LED illumination. The aim of the current work was further development, verification, and analysis of the simple mathematical model of the lettuce productivity. Dry weight of a lettuce leaf rosette was used as the main variable of the model; its changes were described as function of difference between production of biomass through assimilation and its consumption through respiration. The model was quantitively parameterized and verified on basis of our previous experimental works devoted to influence of parameters of the LED illumination on lettuce characteristics. It was shown well correspondence between experimental and simulated results. Further analysis of the developed model predicted optimal illumination conditions of the lettuce cultivation. Particularly, it showed a positive influence of gradual and step increase of the light intensity on final biomass of cultivated lettuce plants. Thus, the developed model can be used as the tool for the theoretical prediction of optimal light conditions for the lettuce cultivation.
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Claims 4
Claim · model-written summary
The model corresponded well with experimental lettuce results.
- Taxon
- Lettuce
Lactuca sativat0 - Outcome
- correspondence between experimental and simulated resultse0
- Comparator
- experimentale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was shown well correspondence between experimental and simulated results”
t0“Lettuce Productivity”
Claim · model-written summary
Model analysis predicted optimal illumination conditions for lettuce cultivation.
- Taxon
- lettuceLactuca sativae0
- Outcome
- optimal illumination conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further analysis of the developed model predicted optimal illumination conditions of the lettuce cultivation”
Claim · model-written summary
The model predicted that gradually increasing light intensity increased final cultivated lettuce biomass.
- Taxon
- lettuceLactuca sativae0
- Treatment
- graduale0
- Outcome
- final biomasse0
- Direction
- positivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it showed a positive influence of gradual and step increase of the light intensity on final biomass of cultivated lettuce plants”
Claim · model-written summary
The model predicted that a step increase in light intensity increased final cultivated lettuce biomass.
- Taxon
- lettuceLactuca sativae0
- Treatment
- step increase of the light intensitye0
- Outcome
- final biomasse0
- Direction
- positivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it showed a positive influence of gradual and step increase of the light intensity on final biomass of cultivated lettuce plants”
The same questions in other papers
light · growth · Lactuca sativa (garden lettuce)Positive and negative results
242 papers in the same direction as this paper · 54 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- positive
296 papers more in this group
See all 300 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.