Indexing

Characterization of Solanum chilense Accessions for Resistance to Tomato Spotted Wilt Virus (TSWV) Disease

Author: Apoorva K.A., Mulla S.W., Fakrudin, B., Jagadeesha R.C., Shankarappa K.S. and Javadagi, R.S.

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Abstract

Domesticated tomato (Solanum lycopersicum L.) is known to be susceptible to many viral diseases. However, resistance subsists in wild tomato species. The wild relative of tomato, Solanum chilense is reported be source of resistant to major diseases of tomato including important viral disease caused by tomato spotted wilt virus (TSWV) infection. In the present study, 17 accessions of S. chilense were evaluated for resistance against TSWV disease in field and contained conditions. The contained condition screening involved mechanical inoculation of the TSWV infected leaf sap with Phosphate buffer on leaves of the S. chilense plants. The magnitude of variation of TSWV disease incidence ranged from 40.00 with a grand mean disease incidence of 14.12 in field condition to 50.00 with a grand mean of 7.06 in contained condition across the accessions. Among 17 accessions of S. chilense screened, 11 accessions did not exhibit any symptoms of TSWV disease and were immune in both field and contained conditions, which indicates these accessions may be a potential source of resistance to incorporate in tomato breeding programs for resistance against TSWV disease and can be used in developing TSWV disease resistant lines of tomato.

Keywords

TSWV, Tospovirus, Wild tomato, Solanum chilense, Viral diseases, Tomato

Conclusion

Among 17 accessions of S. chilense, about 11 accessions named WT-1, WT-2, WT-3, WT-4, WT-8, WT-12, WT-13, WT-14, WT-15, WT-16 and WT-17 did not exhibit any symptoms of TSWV disease and were immune in both field and contained conditions. Theoretical research on the advantages of different breeding strategies is supported by empirical genetic models of trait genetic architecture derived from mapping studies.

References

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How to cite this article

Apoorva K.A., Mulla S.W., Fakrudin, B., Jagadeesha R.C., Shankarappa K.S. and Javadagi, R.S. (2023). Characterization of Solanum chilense Accessions for Resistance to Tomato Spotted Wilt Virus (TSWV) Disease. Biological Forum – An International Journal, 15(6): 231-235.