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Identification of Resistance to Potato yellow mosaic virus-Trinidad Isolate (PYMV-TT) Among Lycopersicon Species
- Rampersad, S.N., Umaharan, P.
- Plant disease 2003 v.87 no.6 pp. 686-691
- Solanum, Tomato mottle virus, Tomato yellow leaf curl virus, assays, breeding lines, cultivars, germplasm, nucleic acid hybridization, plant pathology, potatoes, screening, tomatoes
- Three studies were carried out with the objective of identifying resistance to Potato yellow mosaic virus-Trinidad isolate (PYMV-TT) among Lycopersicon species through field screening and using field-inoculated infector rows. The presence of PYMV-TT was confirmed using dot blot hybridization assays. In the first study, eight commercial cultivars of tomato were tested for resistance. In a subsequent study, 11 breeding lines showing high levels of resistance to Tomato mottle virus (ToMoV-Florida) and six lines resistant to Tomato yellow leaf curl virus (TYLCV-Old World Begomovirus) were screened for resistance to PYMV-TT. All breeding lines and the commercial cultivars tested were susceptible to PYMV-TT infection. The third study involved screening 92 accessions from a representative core collection of wild Lycopersicon germ plasm. PYMV-TT was not detected in individuals of 22 accessions.