Reaction of different tomato cultivars toward race 1 of Fusarium oxysporum f. sp. lycopersici
2012
The aim of this study was to examine the reaction of different tomato
cultivars towards race 1 of Fusarium oxysporum f. sp. lycopersici. The
researched tomato cultivars were: Adonis, Gružanski zlatni, Jasmin crveni,
Narvik SPF and SP109, breeding lines Hom-3, Hom-4, L-4, S-49, S-31, S- 35,
SPA, SPR,V-100, 34/56, 93/10 and 93/16. Reaction to pathogen were tested in
F1 generation, as well, in combination of 93/16 x V-100, S-35 x L- 4, S-49 x
SPA, 34/56 x SPR, S-49 x Hom-4, 93/16 x Hom-3 and 93/10 x S- 31. Plants were
inoculated by submerging wounded roots in to pathogen suspension. Disease was
assessed 30 days after inoculation. After evaluation 15 cultivars expressed
resistance toward this pathogen. Among them 93/10 x S-31, Hom-3 and 93/10 had
average disease rating 1,0. Other genotypes had average disease ratings as
follows: Narvik SPF and S-49 (1,1), 34/56, Hom-4 and S-49 x Hom-4 (1,2),
while Adonis, 93/16 x Hom-3, 34/56 x SPR and 93/16 x V-100 had average
disease rating 1,3. Cultivars SPR and 93/16 had 1,7 ADR, meanwhile Sp-109 had
1,8 average rating. Genotypes SPA (2,1), S-49 x SPA (2,1), V-100 (2,2) and
L-4 (2,6) belong to the group of tolerant genotypes who did not expressed
typical symptoms of chlorosis and wilt of plant but expressed some level of
necrosis of xylem in lower part of plants. Most sensitive to fusarium wilt
were S-35 x L-4 (3,3), S-35 (3,5), S-31 (3,6), Gružanski zlatni (3,8) and
Jasmin Crveni with average disease rating of 4,0.
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