Abstract
Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.). A three-year (2009-2011) study was conducted by randomized block system in a greenhouse without additional heating. The trial included three genotypes of lettuce (Archimedes RZ, Santoro RZ, Kibou RZ). Each row with these genotypes was exposed to the following variants of covering: control-planting on bare soil, mulching before sowing with PE-black foil, agro textile-covering plants after planting with agro textile (17 g), a combination of mulching + agro textile. Throughout of all the three years of the trial, it was continuously evidenced that the genotype ?Santoro RZ? had the biggest heads and the highest yield (15.33 kg 10 m-2), which leads to conclusion that the yield of lettuce is a genotype characteristics. Moreover, the nutritional value (ascorbic acid concentration) has shown that, depending on the method of production, in average, the combination of mulching + agro textile (26.77 mg 100 g-1) had the highest content while the control variant had significantly lower vitamin C content (21.10 mg 100 g-1). The three-year researches have shown that the production method and genotype significantly affect the nitrate content. An average nitrate content was 2196.33 mg kg-1 on the control variant, and 2526.24 mg kg-1 on agro textile. Leafy lettuce of genotyp ?Kibou RZ? had lower nitrate content (2176.85 mg kg-1) compared to ?Archimedes RZ? (2843.05 mg kg-1) and ?Santoro RZ? (2221.37 mg kg-1). However nitrate concentration in all treatments remained within the European Union?s permissible levels.
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Claims 9
Claim · model-written summary
Santoro RZ lettuce had the highest yield, 15.33 kg 10 m-2, across the three years of the greenhouse trial.
- Taxon
- lettuce
Lactuca sativae0 - Material
- ?Santoro RZ?e1
- Outcome
- yielde1
- Direction
- higheste1
- Value
- 15.33 kg 10 m-2e1
- Qualifier
- Throughout of all the three years of the triale1
- Setting
- Greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e1“Throughout of all the three years of the trial, it was continuously evidenced that the genotype ?Santoro RZ? had the biggest heads and the highest yield (15.33 kg 10 m-2)”
Claim · model-written summary
Santoro RZ lettuce had the biggest heads across the three years of the greenhouse trial.
- Taxon
- lettuceLactuca sativae0
- Material
- ?Santoro RZ?e1
- Outcome
- headse1
- Direction
- biggeste1
- Qualifier
- Throughout of all the three years of the triale1
- Setting
- Greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e1“Throughout of all the three years of the trial, it was continuously evidenced that the genotype ?Santoro RZ? had the biggest heads and the highest yield (15.33 kg 10 m-2)”
Claim · model-written summary
The combination of mulching and agro textile had the highest vitamin C content, 26.77 mg 100 g-1, and the control variant had significantly lower vitamin C content, 21.10 mg 100 g-1.
- Taxon
- lettuceLactuca sativae0
- Treatment
- combination of mulching + agro textilee2
- Outcome
- vitamin C contente2
- Direction
- higheste2
- Value
- 26.77 mg 100 g-1e2
- Qualifier
- 21.10 mg 100 g-1e2
- Comparator
- control variante2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e2“in average, the combination of mulching + agro textile (26.77 mg 100 g-1) had the highest content while the control variant had significantly lower vitamin C content (21.10 mg 100 g-1)”
Claim · model-written summary
Production method and genotype significantly affected the nitrate content of lettuce.
- Taxon
- lettuceLactuca sativae0
- Material
- genotypee3
- Treatment
- production methode3
- Outcome
- nitrate contente3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e3“the production method and genotype significantly affect the nitrate content”
Claim · model-written summary
Lettuce grown under agro textile had a higher average nitrate content, 2526.24 mg kg-1, than under the control variant, 2196.33 mg kg-1.
- Taxon
- lettuceLactuca sativae0
- Treatment
- agro textilee4
- Outcome
- nitrate contente4
- Direction
- higherinferrede4
- Value
- 2526.24 mg kg-1e4
- Qualifier
- 2196.33 mg kg-1e4
- Comparator
- control variante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e4“An average nitrate content was 2196.33 mg kg-1 on the control variant, and 2526.24 mg kg-1 on agro textile”
Claim · model-written summary
Kibou RZ lettuce had lower nitrate content, 2176.85 mg kg-1, than Archimedes RZ, 2843.05 mg kg-1.
- Taxon
- lettuceLactuca sativae0
- Material
- Kibou RZe5
- Outcome
- nitrate contente5
- Direction
- lowere5
- Value
- 2176.85 mg kg-1e5
- Qualifier
- 2843.05 mg kg-1e5
- Comparator
- Archimedes RZe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e5“Leafy lettuce of genotyp ?Kibou RZ? had lower nitrate content (2176.85 mg kg-1) compared to ?Archimedes RZ? (2843.05 mg kg-1) and ?Santoro RZ? (2221.37 mg kg-1)”
Claim · model-written summary
Kibou RZ lettuce had lower nitrate content, 2176.85 mg kg-1, than Santoro RZ, 2221.37 mg kg-1.
- Taxon
- lettuceLactuca sativae0
- Material
- Kibou RZe5
- Outcome
- nitrate contente5
- Direction
- lowere5
- Value
- 2176.85 mg kg-1e5
- Qualifier
- 2221.37 mg kg-1e5
- Comparator
- Santoro RZe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e5“Leafy lettuce of genotyp ?Kibou RZ? had lower nitrate content (2176.85 mg kg-1) compared to ?Archimedes RZ? (2843.05 mg kg-1) and ?Santoro RZ? (2221.37 mg kg-1)”
Claim · model-written summary
Nitrate concentration in all treatments remained within the European Union permissible levels.
- Taxon
- lettuceLactuca sativae0
- Outcome
- nitrate concentratione6
- Qualifier
- within the European Union?s permissible levelse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e6“However nitrate concentration in all treatments remained within the European Union?s permissible levels”
Claim · model-written summary
The authors conclude that the yield of lettuce is a genotype characteristic.
- Taxon
- lettuceLactuca sativae0
- Material
- genotypee7
- Outcome
- yielde7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments were conducted in winter growing seasons in order to evaluate the effects of genotype and production methods on yield and nutritional quality of lettuce (Lactuca sativa L.)”
e7“which leads to conclusion that the yield of lettuce is a genotype characteristics”
The same questions in other papers
mulching · quality: phytochemicals · Lactuca sativa (garden lettuce)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.