Advanced progenies and cultivars of tomato have been evaluated through seven years as to local tospovirus infection at Instituto Agronômico de Campinas, in the State of São Paulo, Brazil. Among the germplasm considered resistant, LA 444-1 (Lycopersicon peruvianum), PI 134417 (L. hirsutum) and TSW-10 (L. esculentum x L. peruvianum) have confirmed their resistance while L. esculentum cultivars Platense, Rey de los Tempranos, Leopardo and HE-233 were susceptible. Although parentals LA 444-1 and PI 134417 presented high resistance levels, the lowest infection rates have been observed in progenies of L. peruvianum. The cultivar Stevens, developed in South Africa from L. peruvianum, has shown stable resistance to the tospovirus; some of the progenies of the cross cv. Stevens x IPA-6 have revealed resistance levels as high or even higher than that of the resistant parental (cv. Stevens) as well as desirable agronomic traits.
Lycopersicon spp.; progenies; cultivars; virus resistance; tospovirus
