Abstract
Grafting onto drought tolerant rootstocks has been proposed as a useful strategy to overcome future water scarcity periods. The ‘de Ramellet’ tomato is a drought tolerant landrace selected under semiarid Mediterranean summer conditions under rain-fed or low irrigation. In this manuscript, the responses of a commercial hybrid ‘de Ramellet’ genotype grafted onto a traditional ‘de Ramellet’ (RL) and a commercial Maxifort (Mx) tomato rootstocks under commercial greenhouse conditions are studied. Non-grafted (NON) and self-grafted (SELF) plants were used as controls. Two water regimes were established: well-watered (WW, covering plant water demands) and water deficit (WD, reducing 50% irrigation as compared to WW). The results confirm an improvement in agronomic performance of Mx as compared to NON, but also show a similar improving effect of RL. Grafting enhanced plant growth regardless of the rootstock under WW conditions. Similarly, water-use efficiency (assessed as leaf carbon isotope composition) increased in grafted plants under WD treatment as compared to NON. Despite the lack of significant differences, RL tended to promote higher fruit production and fruit number than Mx, irrespective of the water treatment, whereas RL was the single graft combination with higher fruit production than NON under WD. In conclusion, the results uncover the potential of drought-adapted landraces to be used as rootstocks in order to increase plant growth and fruit production under both well-watered and water deficit cultivation conditions.
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Claims 6
Claim · model-written summary
Maxifort improved agronomic performance relative to non-grafted tomato.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Mxe0
- Outcome
- agronomic performancee0
- Direction
- improvemente0
- Comparator
- NONe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“an improvement in agronomic performance of Mx as compared to NON”
Claim · model-written summary
The traditional de Ramellet rootstock similarly improved agronomic performance relative to non-grafted tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- RLe0
- Outcome
- improving effecte0
- Direction
- improvinge0
- Comparator
- NONe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“but also show a similar improving effect of RL”
e1“Mx as compared to NON”
Claim · model-written summary
Grafting increased tomato plant growth under well-watered conditions regardless of rootstock.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Graftinge0
- Outcome
- plant growthe0
- Direction
- enhancede0
- Qualifier
- WW conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“Grafting enhanced plant growth regardless of the rootstock under WW conditions.”
Claim · model-written summary
Grafted tomato had greater water-use efficiency than non-grafted plants under water deficit.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- graftede0
- Outcome
- water-use efficiencye0
- Direction
- increasede0
- Qualifier
- WD treatmente0
- Comparator
- NONe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“water-use efficiency (assessed as leaf carbon isotope composition) increased in grafted plants under WD treatment as compared to NON”
Claim · model-written summary
RL tended to produce more tomato fruit than Mx across water treatments, without a significant difference.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- RLe0
- Outcome
- fruit production and fruit numbere0
- Direction
- highere0
- Qualifier
- irrespective of the water treatmente0
- Comparator
- Mxe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“Despite the lack of significant differences, RL tended to promote higher fruit production and fruit number than Mx, irrespective of the water treatment”
Claim · model-written summary
RL was the only graft combination with higher tomato fruit production than non-grafted plants under water deficit.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- RLe0
- Outcome
- fruit productione0
- Direction
- highere0
- Qualifier
- WDe0
- Comparator
- NONe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Landrace”
e0“RL was the single graft combination with higher fruit production than NON under WD”
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