Summary
Inheritance studies were conducted to determine the genetic basis of resistance in tomato (Lycopersicon esculentum) against two distinct Tospovirus species (tomato spotted wilt virus and tomato chlorotic spot virus) belonging to the ‘tomato spotted wilt virus complex’ identified in Brazil. F1, backcrosses and F2 populations were developed using the resistant parent ‘CNPH Tx 405’ and susceptible parent ‘IPA-5’. Segregation ratios indicated that the inheritance of resistance to both viruses fit a single dominant gene-model. Preliminary tests using data from 50 pairs of vegetatively propagated F2 plants (inoculated separately with each virus) indicated that the same gene (probably the Sw-5 gene) is controlling the resistance to both viruses. This gene displays a peculiar mode of action, closely resembling a vertical resistance response, but acting against a large number of phenotypic variants and species within the genus Tospovirus.
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Boiteux L.S. & L. de B. Giordano, 1992. Screening lycopersicon germplasm for resistance to a Brazilian isolate of tomato spotted wilt virus (TSWV). TGC Report 42: 13–14.
Boiteux L.S. & T. Nagata, 1993. Susceptibility of Capsicum chinense PI 159236 to tomato spotted wilt virus isolates in Brazil. Plant Dis. 77: 210.
Boiteux L.S., L. de B. Giordano & A.C. de Ávila, 1993a. Avaliaçã de germoplasma de tomate para resistencia a tres espécies de Tospovirus causadoras do ‘vira-cabeça’ do tomateiro no Brasil. Hort. bras. 11: 51.
Boiteux L.S., T. Nagata & L. de B. Giordano, 1993b. Field resistance of tomato (Lycopersicon esculentum) lines to tomato spotted wilt disease. TGC Report 43: 7–9.
Cho J.J., R.F.L. Mau, T.L. German, R.W. Hartmann, L.S. Yudin, D. Gonsalves & R. Provvidenti, 1989. A multidisciplinary approach to management of tomato spotted wilt virus in Hawaii. Plant Dis. 73: 375–383.
de Ávila, A.C., 1992. Diversity of Tospoviruses. Ph.D. Dissertation. Wageningen Agricultural University, Wageningen, The Netherlands.
de Ávila A.C., C. Huguenot, R.O. Resende, E.W. Kitajima, R.W. Goldbach & D. Peters, 1990. Serological differentiation of twenty isolates of tomato spotted wilt virus. J. Gen. Virol. 71: 2801–2807.
de Ávill A.C., P. de Haan R. Kormelink, R. de O. Resende, R.W. Goldbach & D. Peters, 1993. Classification of tospoviruses based on phylogeny of nucleoprotein gene sequence. J. Gen. Virol. 74: 153–159.
Dusi A.N., T. Nagata, L.S. Boiteux & L. de B. Giordano, 1993. Wide-spectrum resistance sources to Tospovirus in tomato. Fitopatol. bras. 18: 279.
Fraser R.S.S., 1990. The genetics of resistance to plant viruses. Annu. Rev. Phytopathol. 28: 179–200.
Nagata T., L.S. Boiteux, N. Iizuka & A.N. Dusi, 1992. Hospedeiros diferenciais e serologia na identificação de grupos do viracabeça do tomateiro em tomate e pimentão no Brasil. Fitopatol. bras. 17: 187.
Nelson, R.R., 1973. Breeding Plants for Disease Resistance-Concepts and Applications. Pennsylvania State University Press.
Robinson R.A., 1976. Plant Pathosystems. Springer-Verlag. Berlin-Heidelberg-New York.
Snedecor G.W. & W.G. Cochran, 1980. Statistical Methods. 7th ed. Iowa state University Press. Ames, Iowa.
Stevens M.R., S.J. Scott & R.C. Gergerich, 1992. Inheritance of a gene for resistance to tomato spotted wilt virus (TSWV) from Lycopersicon peruvianum Mill. Euphytica 59: 9–17.
van Zijl J.J.B., S.E. Bosch & C.P.J. Coetzee, 1986. Breeding tomatoes for processing in South Africa. Acta Horticulturae 194: 69–75.
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Boiteux, L.S., de B. Giordano, L. Genetic basis of resistance against two Tospovirus species in tomato (Lycopersicon esculentum). Euphytica 71, 151–154 (1993). https://doi.org/10.1007/BF00023478
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DOI: https://doi.org/10.1007/BF00023478