Additional sources for resistance to Crown and Root Rot disease   Stamova, L . Dept Veg . Crops, Univ . Calif . Davis, CA 95616 Fusarium oxysporum f . sp . radicis - lycopersici (FORL) causing Crown and Root Rot disease is very damaging in greenhouse and field tomato . The line IRB - 301 - 31 derived from a cross with L . peruvianum is the only source for resistance to FORL that have been reported and used up to now (Yamakawa, 1978; Laterrot, 1988) . Within the Fuibright visit of the author a number of Bulgarian lines having different wild species in their genetic background were tested for resistance to FORL . Six numbers out of 54 totally screened inbred lines coming from the cross Ace x L . chilense back - crossed only once to the cultivated tomato, as well as two lines with L . pennellii in their pedigrees were found to be in segregation for resistance to FORL . Ten lines from crosses with L . pimpinellifolium and eight breeding lines with resistance to other diseases reported previously (Stamova, 1990), were proven again to be homozygous resistant . The resistance is dominantly inherited (Stamova, 1993) . To our knowledge this is the first report about resistance top FORL found in L . chilense, L . pennellii and L . pimpinellifolium . Allelic test between IRS - 301 - 31 and some of the homozygous resistant lines are under way . ACKNOWLEDGMENTS I would like to express my thanks to Prof . C . M . Rick, Dr . A . Stevens and B . Gabor for their cooperation and help . Literature Cited: Laterrot, H . , D . Blancard and Y . Couteaudier . 1988 . Les fusarioses de la tomate . "P . H . M . - Revue Horticole", no 288, juin - juillet . Stamova, L . , M . Yordanov and J . Stancheva . 1990 . New Fusarium on tomatoes in Bulgaria . 60 - Anniv . Scient . Session of the "Maritsa" Veg . Crops Res . Inst . , Plovdiv, Bulgaria . Stamova, L . 1993 . Scope of the breeding tomato for disease resistance in Bulgaria . Proceedings of the Xllth Meeting on Tomato Genetics and Breeding, Plovdiv, Bulgaria, pp . 11 - 18 . Jamakawa, K 1978 . Fusarium wilt Tropical Agriculture, sere A, 147 - 148 . Resistance to Tomato Spotted Wilt Virus   Stamova, L . Dept . Veg . Crops, Univ . Calif . Davis, CA 95616 The Tomato Spotted Wilt Virus (TSWV) has become a big problem for tomato crops in many regions . High level of resistance was reported in L . peruvianum , the resistance being controlled by partly dominant gene Sw - 5 (Stevens et al . , 1992) . The same authors have later published resistance to 3 isolates of TSWN found in 20 L . chilense and 8 L . peruvianum accessions (Stevens et al . , 1994) . In 1995 a number of lines from the breeding program for high D - carotene tomatoes (Manuelyan et al . , 1993) were tested for resistance to TSWV . All numbers under investigation have L . chilense in their pedigrees . The plants were mechanically inoculated in seedling stage . The inoculation was accomplished by rubbing the cotyledons of the plants previously dusted by carborundum, with an inoculum prepared from infected tomato leaves homogenized in cold inoculation buffer . The plants were inoculated twice . Visual symptoms were used as a criteria for evaluation of the plant reaction .

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