Complex Phytopathological Evaluation of Tomato Lines for Early Production

O. GEORGIEVA and D. GANEVA
Vegetable Crops Research Institute, BG-4003, Plovdiv, Bulgaria

Abstract

GEORGIEVA, O. and D. GANEVA, 2004. Complex phytopathological evaluation of tomato lines for early production. Bulg. J. Agric. Sci., 10: 89-93

Complex comparative evaluation of 19 genetically varied lines of determinate and semideterminate tomatoes for fresh consumption and processing was made in field and vessel experiments for their response to economically important for the Republic of Bulgaria diseases, caused by Verticillium dachliae, Fusarium oxysporum, Fusarium oxysporum f.sp. radicis-lycopersici, Phytophthora infestans, Botrytis cinerea, Alternaria solani. All these lines are a result from previous selection by economic properties. There are no perfect immune to the Verticilium wilt among the obtained materials. The lines Nos. 95/2, 980, 986, 1106, 1219, 1125, 1227 and 1237 possess very low values for development of these diseases by which the indices of Verticillium and Fusarium wilt development vary from 2 to 20 per cent. The lines Nos. 95/2, 980, 1035 and 1237 are resistant to the Fusarium wilt but in both of them Nos. 95/2 and 1237 this resistance was combined with the resistance to other diseases, including the Verticillium wilt.
The combination of these properties in the above-mentioned materials plays an important role in further breeding purposes.

Key words: tomato, resistance, fungal diseases