Abstract
Previous studies demonstrated that moderate water supply restrictions and enhanced CO2 concentration can maintain or improve yield and accumulation of secondary compounds in lettuce under greenhouse conditions. Therefore, the aim of this study was to evaluate the combination of reduced soil moisture content and carbon fertilization in shoot fresh weight (FW) and antioxidant capacity of two Batavia lettuce cultivars (Batabia Rubia Munguia; BRM and Maravilla de Verano; MV). Moderate water restriction treatment was equivalent to 2/3 of the field capacity and elevated CO2 concentration (ECO2) was fixed at ~700 µmol mol-1. While CO2 enrichment exerted a positive effect on shoot FW of MV, especially in combination with water restrictions, the yield of the cultivar BRM was not affected non due to CO2 concentration or irrigation regime. However, antioxidant capacity of BRM plants was increased under ECO2 conditions. These results demonstrate that carbon fertilization and/or moderate water limitations can be strategically used to enhance nutritional value and growth of greenhouse lettuce. Highlights Yield improvement and accumulation of antioxidants were evaluated in lettuce under greenhouse conditions. Enhanced CO2 concentration and water restrictions increased shoot fresh weight of Maravilla de Verano lettuce. Elevated CO2 conditions increased the antioxidant capacity of the cultivar Batavia Rubia Munguia. Moderate water limitations did not significantly diminish the growth of lettuce.
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Claims 5
Claim · model-written summary
CO2 enrichment increased shoot fresh weight of MV, especially with water restriction.
- Taxon
- lettuce
Lactuca sativat0 - Material
- MVe0
- Treatment
- CO2 enrichmente0
- Outcome
- shoot FWe0
- Direction
- positive effecte0
- Qualifier
- especially in combination with water restrictionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 enrichment exerted a positive effect on shoot FW of MV, especially in combination with water restrictions”
t0“lettuces”
Claim · model-written summary
BRM yield was unaffected by CO2 concentration.
- Taxon
- lettuceLactuca sativat0
- Material
- BRMe0
- Treatment
- CO2 concentratione0
- Outcome
- yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of the cultivar BRM was not affected non due to CO2 concentration or irrigation regime”
t0“lettuces”
Claim · model-written summary
BRM yield was unaffected by irrigation regime.
- Taxon
- lettuceLactuca sativat0
- Material
- BRMe0
- Treatment
- irrigation regimee0
- Outcome
- yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of the cultivar BRM was not affected non due to CO2 concentration or irrigation regime”
t0“lettuces”
Claim · model-written summary
Elevated CO2 increased BRM antioxidant capacity.
- Taxon
- lettuceLactuca sativat0
- Material
- BRMe0
- Treatment
- ECO2 conditionse0
- Outcome
- antioxidant capacitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antioxidant capacity of BRM plants was increased under ECO2 conditions”
t0“lettuces”
Claim · model-written summary
Moderate water limitation did not significantly diminish lettuce growth.
- Taxon
- lettuceLactuca sativae0
- Treatment
- Moderate water limitationse0
- Outcome
- growthe0
- Direction
- did not significantly diminishe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate water limitations did not significantly diminish the growth of lettuce”
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