Summary
Inheritance studies were conducted to determine the genetic basis of resistance in pepper against one Tospovirus isolate classified as tomato spotted wilt virus (TSWV). F1, backcrosses and F2 populations were developed using the resistant parent Capsicum chinense ‘PI 159236’ (CNPH 679) and the susceptible parent C. annuum ‘Magda’ (CNPH 192). Segregation ratios strongly indicated that the resistant response (a localization, hypersensitive-like reaction) to TSWV fits a single-dominant gene model. Under our experimental conditions, the penetrance of this gene was very high. This gene (tentatively named Tsw) is highly effective only against TSWV isolates. The resistance governed by the Tsw gene was not effective against isolates belonging to tomato chlorotic spot virus (TCSV) and groundnut ring spot virus (GRSV), two other previously described Tospovirus species.
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Boiteux, L.S., de Ávila, A.C. Inheritance of a resistance specific to tomato spotted wilt tospovirus in Capsicum chinense ‘PI 159236’. Euphytica 75, 139–142 (1994). https://doi.org/10.1007/BF00024541
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DOI: https://doi.org/10.1007/BF00024541