Abstract
A greenhouse trial was conducted in Southern Italy to examine the effects of foliar applications of two substances, methyl-jasmonate (MeJA) and a zeolite, on the harvest and post-harvest performance of two hydroponically grown baby leaf genotypes (leafy chicory ‘Cicoria costa rossa’; kale ‘Cavolo nero’). MeJA is a phyto-hormone primarily studied for fruit and post-harvest applications, while zeolite is typically used for pest and disease biological control. MeJA (Sigma-Aldrich Merck KGaA, Darmstadt, Germany), and a commercial zeolite (Big-Zeo, Agricola Internazionale s.r.l., Pisa, Italy) (BigZeo) were sprayed twice at the second and fourth true leaf stages (BigZeo, 5 kg ha−1; MeJA, 250 µM). Bio-physiological (yield, dry matter DM, chlorophyll CHL, weight loss WL) and qualitative (nitrate, carotenoids, phenols, flavonoids, anthocyanins, antioxidant activity) traits were evaluated in both raw and fresh-cut (7 day-cold-stored) products. Treatments did not significantly affect yield (1.0 kg m−2), while plant responses to the substances concerning other traits were genotype-dependent. MeJA enhanced greenness (CHL), texture (DM), and antioxidant activity (by increasing carotenoids and flavonoids) in chicory. In contrast, zeolite improved greenness, texture, and antioxidant activity (by increasing carotenoids, anthocyanins, and phenols), and reduced nitrate in kale. Treatments did not affect weight loss (2.2 g 100 g−1 f.w., on average). After 7 days of storage, MeJA-treated chicory and zeolite-treated kale exhibited improved textural and nutritional quality.
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Claims 11
Claim · model-written summary
The foliar treatments did not significantly affect yield, averaging 1.0 kg m−2.
- Taxon
- leafy chicorye1
- Treatment
- Treatmentse0
- Outcome
- yielde0
- Direction
- did not significantly affecte0
- Value
- 1.0 kg m−2e0
Not reportedComparator
Verbatim
e0“Treatments did not significantly affect yield (1.0 kg m−2)”
e1“leafy chicory ‘Cicoria costa rossa’; kale ‘Cavolo nero’”
Claim · model-written summary
MeJA improved greenness and texture in chicory.
- Taxon
- chicory
Cichorium intybuse0 - Treatment
- MeJAe0
- Outcome
- greenness (CHL), texture (DM)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA enhanced greenness (CHL), texture (DM), and antioxidant activity (by increasing carotenoids and flavonoids) in chicory.”
Claim · model-written summary
MeJA increased chicory carotenoids and flavonoids.
- Taxon
- chicoryCichorium intybuse0
- Treatment
- MeJAe0
- Outcome
- carotenoids and flavonoidse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA enhanced greenness (CHL), texture (DM), and antioxidant activity (by increasing carotenoids and flavonoids) in chicory.”
Claim · model-written summary
MeJA enhanced antioxidant activity in chicory.
- Taxon
- chicoryCichorium intybuse0
- Treatment
- MeJAe0
- Outcome
- antioxidant activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA enhanced greenness (CHL), texture (DM), and antioxidant activity (by increasing carotenoids and flavonoids) in chicory.”
Claim · model-written summary
Zeolite improved greenness and texture in kale.
- Taxon
- kale
Brassica oleracea var. viridise0 - Treatment
- zeolitee0
- Outcome
- greenness, texturee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeolite improved greenness, texture, and antioxidant activity (by increasing carotenoids, anthocyanins, and phenols), and reduced nitrate in kale.”
Claim · model-written summary
Zeolite increased kale carotenoids, anthocyanins and phenols.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- zeolitee0
- Outcome
- carotenoids, anthocyanins, and phenolse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeolite improved greenness, texture, and antioxidant activity (by increasing carotenoids, anthocyanins, and phenols), and reduced nitrate in kale.”
Claim · model-written summary
Zeolite improved antioxidant activity in kale.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- zeolitee0
- Outcome
- antioxidant activitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeolite improved greenness, texture, and antioxidant activity (by increasing carotenoids, anthocyanins, and phenols), and reduced nitrate in kale.”
Claim · model-written summary
Zeolite reduced nitrate in kale.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- zeolitee0
- Outcome
- nitratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zeolite improved greenness, texture, and antioxidant activity (by increasing carotenoids, anthocyanins, and phenols), and reduced nitrate in kale.”
Claim · model-written summary
The treatments did not affect weight loss, averaging 2.2 g 100 g−1 f.w.
- Taxon
- leafy chicorye1
- Treatment
- Treatmentse0
- Outcome
- weight losse0
- Direction
- did not affecte0
- Value
- 2.2 g 100 g−1 f.w.e0
Not reportedComparator
Verbatim
e0“Treatments did not affect weight loss (2.2 g 100 g−1 f.w., on average).”
e1“leafy chicory ‘Cicoria costa rossa’; kale ‘Cavolo nero’”
Claim · model-written summary
After seven days of storage, MeJA-treated chicory showed improved textural and nutritional quality.
- Taxon
- chicoryCichorium intybuse0
- Treatment
- MeJA-treatede0
- Outcome
- textural and nutritional qualitye0
- Direction
- improvede0
- Qualifier
- After 7 days of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 days of storage, MeJA-treated chicory and zeolite-treated kale exhibited improved textural and nutritional quality.”
Claim · model-written summary
After seven days of storage, zeolite-treated kale showed improved textural and nutritional quality.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- zeolite-treatede0
- Outcome
- textural and nutritional qualitye0
- Direction
- improvede0
- Qualifier
- After 7 days of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 7 days of storage, MeJA-treated chicory and zeolite-treated kale exhibited improved textural and nutritional quality.”
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