Abstract
This study investigated the effect of deficit irrigation at three management allowable depletion levels (MAD) 25%, 50%, and 75% on phytochemicals, ascorbic acid, antioxidant activity, glucose, fructose, and fresh and dry mass in two green leafy lettuce cultivars (Lollo Bionda and Vera) at harvest. Genotype response was observed during deficit irrigation on fresh and dry mass at harvest. Vera revealed similar fresh mass at MAD levels 25% and 50%. Chicoric acid, caftaric acid, and chlorogenic and caffeic acid tended to increase at 50% MAD, while kaempferol, quercetin, and myricetin increased at 75% MAD in both cultivars indicating increasing antioxidant properties. Ascorbic acid content declined with increasing MAD levels and no definite trend on β-carotene content was noted in these cultivars with respect to MAD irrigation. Deficit irrigation at 50% and 70% increased glucose concentration in cv. Lollo Bionda. Deficit irrigation influences the abiotic stress condition that stimulates the biosynthesis of phytochemicals in plants and improves crop quality. However, deficit irrigation can affect marketable crop yield. Based on findings of this study, the lettuce cv. Vera can be recommended as a suitable cultivar for deficit irrigation (at MAD 50% levels) for improving dietary phytochemicals and crop quality without compromising fresh mass for marketing.
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Claims 9
Claim · model-written summary
Vera had similar fresh mass at 25% and 50% MAD.
- Taxon
- lettuce
Lactuca sativat0 - Material
- Verae0
- Treatment
- MAD levels 25%e0
- Outcome
- fresh masse0
- Direction
- similare0
- Comparator
- 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vera revealed similar fresh mass at MAD levels 25% and 50%.”
t0“lettuce”
Claim · model-written summary
Chicoric, caftaric and chlorogenic acids tended to increase at 50% MAD in both cultivars.
- Taxon
- lettuceLactuca sativat0
- Treatment
- 50% MADe0
- Outcome
- Chicoric acid, caftaric acid, and chlorogenice0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chicoric acid, caftaric acid, and chlorogenic and caffeic acid tended to increase at 50% MAD, while kaempferol, quercetin, and myricetin increased at 75% MAD in both cultivars indicating increasing antioxidant properties.”
t0“lettuce”
Claim · model-written summary
Caffeic acid tended to increase at 50% MAD in both cultivars.
- Taxon
- lettuceLactuca sativat0
- Treatment
- 50% MADe0
- Outcome
- caffeic acide0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chicoric acid, caftaric acid, and chlorogenic and caffeic acid tended to increase at 50% MAD, while kaempferol, quercetin, and myricetin increased at 75% MAD in both cultivars indicating increasing antioxidant properties.”
t0“lettuce”
Claim · model-written summary
Kaempferol, quercetin and myricetin increased at 75% MAD in both cultivars.
- Taxon
- lettuceLactuca sativat0
- Treatment
- 75% MADe0
- Outcome
- kaempferol, quercetin, and myricetine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chicoric acid, caftaric acid, and chlorogenic and caffeic acid tended to increase at 50% MAD, while kaempferol, quercetin, and myricetin increased at 75% MAD in both cultivars indicating increasing antioxidant properties.”
t0“lettuce”
Claim · model-written summary
Ascorbic acid content declined as MAD levels increased.
- Taxon
- lettuceLactuca sativat0
- Treatment
- MAD levelse0
- Outcome
- Ascorbic acid contente0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ascorbic acid content declined with increasing MAD levels”
t0“lettuce”
Claim · model-written summary
β-carotene content had no definite trend with MAD irrigation.
- Taxon
- lettuceLactuca sativat0
- Treatment
- MAD irrigatione0
- Outcome
- β-carotene contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no definite trend on β-carotene content was noted in these cultivars with respect to MAD irrigation.”
t0“lettuce”
Claim · model-written summary
Deficit irrigation at 50% increased glucose in Lollo Bionda.
- Taxon
- lettuceLactuca sativat0
- Material
- Lollo Biondae0
- Treatment
- Deficit irrigation at 50%e0
- Outcome
- glucose concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficit irrigation at 50% and 70% increased glucose concentration in cv. Lollo Bionda.”
t0“lettuce”
Claim · model-written summary
Deficit irrigation at 70% increased glucose in Lollo Bionda.
- Taxon
- lettuceLactuca sativat0
- Material
- Lollo Biondae0
- Treatment
- 70%e0
- Outcome
- glucose concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficit irrigation at 50% and 70% increased glucose concentration in cv. Lollo Bionda.”
t0“lettuce”
Claim · model-written summary
The authors recommend Vera at 50% MAD for improved phytochemicals and quality without loss of marketable fresh mass.
- Taxon
- lettuceLactuca sativae0
- Material
- Verae0
- Treatment
- deficit irrigation (at MAD 50% levels)e0
- Outcome
- improving dietary phytochemicals and crop quality without compromising fresh mass for marketinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lettuce cv. Vera can be recommended as a suitable cultivar for deficit irrigation (at MAD 50% levels) for improving dietary phytochemicals and crop quality without compromising fresh mass for marketing.”
The same questions in other papers
irrigation · molecular: metabolites · Lactuca sativa (garden lettuce)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
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.