Abstract
The Sw-5 locus confers dominant resistance to tomato spotted wilt virus (TSWV). To map the location and facilitate the identification of markers linked to Sw-5 we developed a pair of near-isogenic lines (NILs) and an F2 Lycopersicon esculentum x L. pennellii population segregating for resistance to TSWV. DNA from the NILs was analyzed using 748 random 10-mer oligonucleotides to discern linked molecular markers using a random amplified polymorphic DNA (RAPD) approach. One random primer (GAGCACGGGA) was found to produce a RAPD band of about 2200 bp that demonstrates linkage to Sw-5. Data from co-segregation of resistance and restriction fragment length polymorphisms (RFLPs) in a F2 interspecific population position Sw-5 between the markers CT71 and CT220 near the telomere of the long arm of chromosome 9.
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Communicated by A. L. Kahler
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Stevens, M.R., Lamb, E.M. & Rhoads, D.D. Mapping the Sw-5 locus for tomato spotted wilt virus resistance in tomatoes using RAPD and RFLP analyses. Theoret. Appl. Genetics 90, 451–456 (1995). https://doi.org/10.1007/BF00221989
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DOI: https://doi.org/10.1007/BF00221989