Abstract
Development of diseases in cultivated crops depends on the complex inter-relationship between host, pathogen and prevailing environmental conditions. The significant role of nematodes in the development of nematode–fungus interaction is demonstrated in many crops throughout the world. However, there is scanty research information in Ethiopia. Therefore, the main objectives of this study were to: (i) investigate the effect of Meloidogyne incognita (MI)-Fusarium oxysporum f.sp. lycopersici (FOL) interaction on selected tomato genotypes based on their order of inoculation and (ii) evaluate the reaction of selected tomato genotypes against the MI-FOL interaction. The greenhouse experiment was laid out in a completely randomized design (CRD) factorial with four replications. Three-week-old tomato seedlings were inoculated with MI suspension at a rate of 3000 second-stage juveniles (J2) and 10 ml FOL suspension (3x106 conidia/ml/pot) around the root rhizosphere. Tomato growth, biomass and pathogen related data were recorded starting first week after inoculation to eight weeks of post inoculation. The result revealed that simultaneous inoculation of MI and FOL (NF) and FOL 10 days after MI (N1F2) was found significantly (p ≤ 0.05) reducing tomato growth, biomass and pathogen related parameters compared to single pathogen or un-inoculated control. Among the three tomato genotypes tested, Assila was moderately resistant as measured by the lower number of root gall and egg mass per plant, that it could be of a good choice to manage this disease complex or interaction. Performance evaluation study at MI-FOL hot spot farmers’ field should be investigated in the near future. Key words: Fusarium oxysporum f.sp. lycopersici, Meloidogyne incognita, resistance, management, synergistic effect and tomato varieties
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Claims 4
Claim · model-written summary
Simultaneous nematode and fungus inoculation significantly reduced tomato growth and biomass relative to single-pathogen or uninoculated controls.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- simultaneous inoculation of MI and FOL (NF)e0
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitat0pathogen - Second interactor
- Fusarium oxysporum f.sp. lycopersici
Fusarium oxysporum f. sp. lycopersicit0pathogen - Outcome
- tomato growth, biomasse0
- Direction
- reducinge0
- Comparator
- single pathogen or un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“simultaneous inoculation of MI and FOL (NF) and FOL 10 days after MI (N1F2) was found significantly (p ≤ 0.05) reducing tomato growth, biomass and pathogen related parameters compared to single pathogen or un-inoculated control”
t0“Meloidogyne incognita and Fusarium oxysporum f.sp. lycopersici on selected tomato”
Claim · model-written summary
Fungal inoculation ten days after nematode inoculation significantly reduced tomato growth and biomass relative to controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- FOL 10 days after MI (N1F2)e0
- Interactor
- Meloidogyne incognitaMeloidogyne incognitat0pathogen
- Second interactor
- Fusarium oxysporum f.sp. lycopersiciFusarium oxysporum f. sp. lycopersicit0pathogen
- Outcome
- tomato growth, biomasse0
- Direction
- reducinge0
- Comparator
- single pathogen or un-inoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FOL 10 days after MI (N1F2) was found significantly (p ≤ 0.05) reducing tomato growth, biomass and pathogen related parameters compared to single pathogen or un-inoculated control”
t0“Meloidogyne incognita and Fusarium oxysporum f.sp. lycopersici on selected tomato”
Claim · model-written summary
Assila was moderately resistant, with fewer root galls and egg masses per plant.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Assilae0
- Interactor
- Meloidogyne incognitaMeloidogyne incognitat0pathogen
- Outcome
- number of root gall and egg mass per plante0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Assila was moderately resistant as measured by the lower number of root gall and egg mass per plant”
t0“Meloidogyne incognita and Fusarium oxysporum f.sp. lycopersici on selected tomato”
Claim · model-written summary
The authors identify Assila as a possible choice for managing the tomato disease complex.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Assilae1
- Outcome
- good choice to manage this disease complex or interactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it could be of a good choice to manage this disease complex or interaction”
e1“Assila was moderately resistant”
t0“Meloidogyne incognita and Fusarium oxysporum f.sp. lycopersici on selected tomato”
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