Abstract
Tomato (Lycopersicon esculentum Mill.) is a warm season vegetable crop with an optimum temperature for production of 28/22 oC (day/night). Heat stress is a major environmental stress that limits tomato production during summer under arid conditions. A variety of control measures and techniques including cultural practices in the field have been tested previously under Sudan conditions. Grafting of heat sensitive tomato cultivars could be used as scion, heat tolerant tomato or eggplant cultivars as rootstock to enhance heat tolerance into tomato plants. The objective of this study is to examine if there is any positive effect of grafting on the vegetative and reproductive development in tomato plants under heat stress conditions. The heat tolerant tomato cultivar ‘Summer set’ and the eggplant cultivar ‘Black Beauty’ as rootstock as well as the less heat tolerant tomato cultivar ‘UC 82-B’as scion were selected. Plants were grown under two temperature regimes 30/22 oC and 38/27 oC (day/night) in plant growth chambers at the Department of Vegetable Crops, Institute for Horticultural Sciences, Faculty of Agriculture and Horticulture, Humboldt University of Berlin. The experiments were set up in a complete randomized design with five replicates for each treatment. The following characteristics were recorded: leaf area, fresh and dry weight of leaves and stem, fresh and dry weight of roots, number of clusters, number of flowers, and the number of pollen grains per microscopic field. In addition, chlorophyll fluorescence and electric conductivity were measured, suggested as a screening technique for heat tolerance. Significant differences were encountered between treatment ‘UC 82-B/Black Beauty’ and ‘UC 82-B’ under 38/27 °C for chlorophyll fluorescence, electrolyte leakage and some vegetative and reproductive parameters. On the whole, grafting may have slightly positive effects on tomato vegetative growth and development under high temperature conditions.
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Claims 5
Claim · model-written summary
Tomato production has an optimum day/night temperature of 28/22 oC.
- Taxon
- Tomato
Solanum lycopersicume0 - Outcome
- optimum temperature for productione0
- Value
- 28/22 oCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato (Lycopersicon esculentum Mill.) is a warm season vegetable crop with an optimum temperature for production of 28/22 oC (day/night).”
Claim · model-written summary
At 38/27 °C, grafted UC 82-B/Black Beauty differed significantly from ungrafted UC 82-B in chlorophyll fluorescence.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- ‘UC 82-B/Black Beauty’e0
- Outcome
- chlorophyll fluorescencee0
- Qualifier
- 38/27 °Ce0
- Comparator
- ‘UC 82-B’e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences were encountered between treatment ‘UC 82-B/Black Beauty’ and ‘UC 82-B’ under 38/27 °C for chlorophyll fluorescence, electrolyte leakage and some vegetative and reproductive parameters.”
t0“Tomato Plants”
Claim · model-written summary
At 38/27 °C, grafted UC 82-B/Black Beauty differed significantly from ungrafted UC 82-B in electrolyte leakage.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- ‘UC 82-B/Black Beauty’e0
- Outcome
- electrolyte leakagee0
- Qualifier
- 38/27 °Ce0
- Comparator
- ‘UC 82-B’e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences were encountered between treatment ‘UC 82-B/Black Beauty’ and ‘UC 82-B’ under 38/27 °C for chlorophyll fluorescence, electrolyte leakage and some vegetative and reproductive parameters.”
t0“Tomato Plants”
Claim · model-written summary
At 38/27 °C, grafted UC 82-B/Black Beauty differed significantly from ungrafted UC 82-B in some vegetative and reproductive parameters.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- ‘UC 82-B/Black Beauty’e0
- Outcome
- some vegetative and reproductive parameterse0
- Qualifier
- 38/27 °Ce0
- Comparator
- ‘UC 82-B’e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences were encountered between treatment ‘UC 82-B/Black Beauty’ and ‘UC 82-B’ under 38/27 °C for chlorophyll fluorescence, electrolyte leakage and some vegetative and reproductive parameters.”
t0“Tomato Plants”
Claim · model-written summary
The authors suggest grafting may have slightly positive effects on tomato vegetative growth and development at high temperature.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- graftinge0
- Outcome
- vegetative growth and developmente0
- Direction
- positive effectse0
- Qualifier
- under high temperature conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the whole, grafting may have slightly positive effects on tomato vegetative growth and development under high temperature conditions.”
The same questions in other papers
grafting · growth · Solanum lycopersicum (tomato)Positive and negative results
71 papers in the same direction as this paper · 11 in the opposite direction
- positive
- negative
- negative
79 papers more in this group
See all 83 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.