Abstract
The aim of the current work was to determine whether grafting could improve salinity tolerance of melon and cucumber, and whether possible induction of tolerance to salt stress was associated with the protection of the photosynthetic apparatus. Two greenhouse experiments were carried out to determine gas exchange, mineral composition, growth and yield of melon (Cucumis melo L. cv. Cyrano) and cucumber (Cucumis sativus L. cv. Akito) plants, either ungrafted or grafted onto the Cucurbita hybrid rootstocks (Cucurbita maxima Duch. Ă Cucurbita moschata Duch.), 'P360', and 'PS1313', respectively. Plants were grown hydroponically and supplied with two nutrient solutions - a nonsalinized control and a salinized solution which contained 40 mmol L-1 of NaCl. Salinity induced a smaller decrease in leaf area index (LAI), in grafted-compared to ungrafted plants. Similarly, the P N and g s reduction in NaCl treatment compared to control were significantly lower in grafted plants (34% and 34%, respectively, for melon and 14% and 15.5%, respectively, for cucumber) compared to ungrafted plants (42% and 40%, respectively, for melon and 30% and 21%, respectively, for cucumber). In all grafting combinations, negative correlations were recorded between Na+ and Cl- in the leaf tissue and P N. Grafting reduced concentrations of sodium, but not chloride, in leaves. Under saline conditions a smaller reduction in melon and cucumber shoot biomass dry mass and fruit yield were recorded, with positive correlations between shoot biomass, yield and P N. These results suggest that the use of salt tolerant Cucurbita rootstock can improve melon and cucumber photosynthetic capacity under salt stress and consequently crop performance.
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Claims 10
Claim · model-written summary
Grafted plants had a smaller salinity-induced decrease in leaf area index than ungrafted plants.
Verbatim
e0“Salinity induced a smaller decrease in leaf area index (LAI), in grafted-compared to ungrafted plants.”
Claim · model-written summary
Grafted melon had a 34% reduction in PN under NaCl, versus 42% for ungrafted melon.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe0 - Treatment
- grafted plantse0
- Outcome
- P Ne0
- Direction
- lowere0
- Value
- 34%e0
- Qualifier
- 42%e0
- Comparator
- ungrafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“P N and g s reduction in NaCl treatment compared to control were significantly lower in grafted plants (34% and 34%, respectively, for melon and 14% and 15.5%, respectively, for cucumber) compared to ungrafted plants (42% and 40%, respectively, for melon and 30% and 21%, respectively, for cucumber)”
Claim · model-written summary
Grafted melon had a 34% reduction in gs under NaCl, versus 40% for ungrafted melon.
- Taxon
- melonCucumis meloe0
- Treatment
- grafted plantse0
- Outcome
- g se0
- Direction
- lowere0
- Value
- 34%e0
- Qualifier
- 40%e0
- Comparator
- ungrafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P N and g s reduction in NaCl treatment compared to control were significantly lower in grafted plants (34% and 34%, respectively, for melon and 14% and 15.5%, respectively, for cucumber) compared to ungrafted plants (42% and 40%, respectively, for melon and 30% and 21%, respectively, for cucumber)”
Claim · model-written summary
Grafted cucumber had a 14% reduction in PN under NaCl, versus 30% for ungrafted cucumber.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- grafted plantse0
- Outcome
- P Ne0
- Direction
- lowere0
- Value
- 14%e0
- Qualifier
- 30%e0
- Comparator
- ungrafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P N and g s reduction in NaCl treatment compared to control were significantly lower in grafted plants (34% and 34%, respectively, for melon and 14% and 15.5%, respectively, for cucumber) compared to ungrafted plants (42% and 40%, respectively, for melon and 30% and 21%, respectively, for cucumber)”
Claim · model-written summary
Grafted cucumber had a 15.5% reduction in gs under NaCl, versus 21% for ungrafted cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- grafted plantse0
- Outcome
- g se0
- Direction
- lowere0
- Value
- 15.5%e0
- Qualifier
- 21%e0
- Comparator
- ungrafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P N and g s reduction in NaCl treatment compared to control were significantly lower in grafted plants (34% and 34%, respectively, for melon and 14% and 15.5%, respectively, for cucumber) compared to ungrafted plants (42% and 40%, respectively, for melon and 30% and 21%, respectively, for cucumber)”
Claim · model-written summary
Leaf sodium and chloride concentrations were negatively correlated with PN.
Not reportedTaxon
Verbatim
e0“negative correlations were recorded between Na+ and Cl- in the leaf tissue and P N.”
Claim · model-written summary
Grafting reduced leaf sodium concentrations.
Not reportedTaxonComparator
Verbatim
e0“Grafting reduced concentrations of sodium, but not chloride, in leaves.”
Claim · model-written summary
Grafting did not reduce leaf chloride concentrations.
Not reportedTaxonComparator
Verbatim
e0“Grafting reduced concentrations of sodium, but not chloride, in leaves.”
Claim · model-written summary
Under salinity, grafted melon and cucumber had smaller reductions in shoot dry biomass and fruit yield.
- Taxon
- melon and cucumberCucumis meloCucumis sativuse0
- Treatment
- saline conditionse0
- Outcome
- shoot biomass dry mass and fruit yielde0
- Direction
- smaller reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under saline conditions a smaller reduction in melon and cucumber shoot biomass dry mass and fruit yield were recorded”
Claim · model-written summary
Shoot biomass and yield were positively correlated with PN.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorTreatmentComparatorSetting
Verbatim
e0“positive correlations between shoot biomass, yield and P N.”
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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.