Evaluation of local accessions of pink tomato to Pseudomonas syringae pv. tomato and Xanthomonas vesicatoria agents of bacterial spot

Daniela Ganeva, Nevena Bogatzevska

Abstract: Local varieties and populations of pink fruited tomato were studied by agro-biological, morphological and phytopathological indexes. Gene carriers of resistance to Pseudomonas syringae pv. tomato (race R0, R1) and Xanthomonas vesicatoria (race Т1, Т2, Т3) – agents of bacterial speck and spot were chosen. Accession № 1272/09 possesses high degree of resistance to P. syringae pv. tomato (bacterial speck) and good economic and morphological indexes. It was established considerably higher number of local accessions with pink fruits resistant and poorly tolerant to X. vesicatoria (bacterial spot) compared to those resistant to P. syringae pv. tomato. Higher percentage of resistant accessions to race T1 and T3 was recorded and lower – to T2 of X. vesicatoria. Accessions № 1152/09 и № 1216/09 described with high productivity, quality and resistance to Т1 and Т3 of X. vesicatoria are of interest to breeding process. A complex resistance to the two bacteria (P. syringae pv. tomato R1 и X. vesicatoria T1) but low productivity was recorded for № 1139/09. Perspective accessions of pink fruited tomato that could be used for genetic investigations were identified as a source of resistance in the combinative and heterosis breeding.

Keywords: bacterial spot; gene pool; morphological indexes; productivity; tomato

Date published: 2017-01-27