Abstract
A new procedure for optimising stem diameters of highly nematode-susceptible watermelon (Citrullus lanatus) cultivars and highly nematode-resistant wild watermelon (Cucumis africanus) and wild cucumber (C. myriocarpus) seedlings indicated that the two genera had high inter-generic compatibility, with rootstocks retaining their ability to suppress the root-knot nematodes (Meloidogyne species). A field study was initiated to determine the influence of inter-generic grafting in Citrullus cultivars onto Cucumis species on survival of inter-grafts, flowering, fruit yield and accumulation of essential nutrient elements under field conditions. At Week four after transplanting, Cucumis africanus and Cucumis myriocarpus rootstocks on cultivars ‘Congo’ and ‘Charleston Gray’ increased flowering by 70-81 % and 96-77 %, respectively. At harvest, 66 days after transplanting, Cucumis rootstocks on cultivars ‘Congo’ and ‘Charleston Gray’ reduced relative impact values by 92-93 % and 94-96 %, respectively; but increased fresh fruit yield by 46-60 % and 48-115 %, respectively; and dry shoot mass by 50-66% and 30-104%, respectively. Rootstocks had no effect on accumulation of essential nutrient elements except for manganese and zinc in leaves of scions. In conclusion, inter-generic grafting has the potential economic benefit on watermelon production, particularly in areas infested with Meloidogyne species, since there are no genotypes resistant to this nematode genus in watermelon cultivars.
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Claims 7
Claim · model-written summary
The two genera had high graft compatibility and rootstocks retained nematode suppression.
- Taxon
- watermelon
Citrullus lanatust0 - Interactor
- Meloidogyne species
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Meloidogynee0other - Outcome
- high inter-generic compatibilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“the two genera had high inter-generic compatibility, with rootstocks retaining their ability to suppress the root-knot nematodes (Meloidogyne species)”
t0“water melon cultivars”
Claim · model-written summary
Cucumis rootstocks increased flowering of Congo and Charleston Gray at week four.
- Taxon
- watermelonCitrullus lanatust0
- Material
- ‘Congo’ and ‘Charleston Gray’e0
- Treatment
- Cucumis africanus and Cucumis myriocarpus rootstockse0
- Interactor
- Cucumis africanus
Cucumis africanuse0other - Outcome
- floweringe0
- Direction
- increasede0
- Value
- 70-81 % and 96-77 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Week four after transplanting, Cucumis africanus and Cucumis myriocarpus rootstocks on cultivars ‘Congo’ and ‘Charleston Gray’ increased flowering by 70-81 % and 96-77 %, respectively”
t0“water melon cultivars”
Claim · model-written summary
Cucumis rootstocks reduced relative nematode impact in Congo and Charleston Gray.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- Cucumist0
- Interactor
- MeloidogyneMeloidogynet0pathogene0
- Outcome
- relative impact valuese0
- Direction
- reducede0
- Value
- 92-93 % and 94-96 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced relative impact values by 92-93 % and 94-96 %, respectively”
t0“water melon cultivars in inter-generic grafting on nematode-resistant Cucumis seedling rootstocks in Meloidogyne-infested fields”
Claim · model-written summary
Cucumis rootstocks increased fresh fruit yield.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- Cucumist0
- Outcome
- fresh fruit yielde0
- Direction
- increasede0
- Value
- 46-60 % and 48-115 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased fresh fruit yield by 46-60 % and 48-115 %, respectively”
t0“water melon cultivars in inter-generic grafting on nematode-resistant Cucumis seedling rootstocks”
Claim · model-written summary
Cucumis rootstocks increased dry shoot mass.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- Cucumist0
- Outcome
- dry shoot masse0
- Direction
- increasede1
- Value
- 50-66% and 30-104%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry shoot mass by 50-66% and 30-104%, respectively”
t0“water melon cultivars in inter-generic grafting on nematode-resistant Cucumis seedling rootstocks”
e1“but increased fresh fruit yield”
Claim · model-written summary
Rootstocks did not affect most essential nutrient accumulation, except manganese and zinc.
- Taxon
- watermelonCitrullus lanatust0
- Organ / stage
- leaves of scionse0
- Treatment
- Rootstockse0
- Outcome
- accumulation of essential nutrient elementse0
- Direction
- no effecte0
- Qualifier
- except for manganese and zince0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rootstocks had no effect on accumulation of essential nutrient elements except for manganese and zinc in leaves of scions”
t0“water melon cultivars”
Claim · model-written summary
The authors conclude that inter-generic grafting may economically benefit watermelon production in Meloidogyne-infested areas.
- Taxon
- watermelonCitrullus lanatuse0
- Interactor
- Meloidogyne speciesMeloidogynee0pathogen
- Outcome
- potential economic benefit on watermelon productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inter-generic grafting has the potential economic benefit on watermelon production, particularly in areas infested with Meloidogyne species”
The same questions in other papers
Cucumis africanus · phenology · Citrullus lanatus (watermelon)Results agree
1 paper in the same direction as this paper
- positive
Cucumis myriocarpus · phenology · Citrullus lanatus (watermelon)Results agree
1 paper in the same direction as this paper
- positive
grafting · phenology · Citrullus lanatus (watermelon)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
1 paper more in this group
See all 5 papers →grafting · nutrient: content · Citrullus lanatus (watermelon)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
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See all 11 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.