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Plant Science Today (PST)

Research Articles

Vol. 13 No. 3 (2026)

Screening of tomato (Solanum lycopersicum L.) germplasm for resistance and tolerance to tomato mosaic virus and its impact on yield in Burkina Faso

DOI
https://doi.org/10.14719/pst.13799
Submitted
23 January 2026
Published
11-05-2026 — Updated on 03-07-2026
Versions

Abstract

Tomato mosaic virus (ToMV) is a major viral pathogen affecting tomato crops worldwide, including in Burkina Faso and is responsible for significant yield losses. The objective of this study was to identify sources of resistance to ToMV among different tomato varieties. Twelve tomato varieties were evaluated in pots arranged in three repetitions. The infected plants exhibited characteristic symptoms of the virus such as mosaic, leaf deformations and stunting. Presence of ToMV were detected using reverse transcription polymerase chain reaction (RT-PCR). The analysis of variance showed significant (p < 0.01) differences among tomato varieties to disease severity. Varieties such as N'Gotto, Petomech, FBT2, FBT1, Rio-Grande, Mongal F1, Talato F1, Cobra 26 F1 and Roma VF exhibited higher disease severity. The lowest severity index (0.67–1.33) was recorded in the varieties FBT1, FBT2 and FBT3, which also showed reduced disease progression. The greatest yield reductions were observed in N’Gotto, Petomech, FBT4, FBT5, Rio-Grande, Mongal F1, Talato F1, Cobra 26 F1 and Roma VF. The results further indicated that the highest reduction of yield between the infected and control varieties was associated with higher disease occurrence. FBT1, FBT2 and FBT3 were identified as resistant varieties, showing lower yield losses compared with susceptible cultivars. Despite moderate yield penalties, these accessions may serve as valuable genetic resources for farmers and tomato breeding programmes.

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