Bacterial microflora of seeds of cultivars of tomatoes at treatment with fungicide

Abstract

The purpose. To analyze qualitative changes in structure of microbiota of seeds of cultivars of tomatoes at pre-seeding treatment with fungicide. Methods. In researches they used the treated and not treated seeds of 16 determinant cultivars of tomatoes of Ukrainian selection. Seed analysis of tomatoes was carried out with the use of classical microbiological methods. Antagonistic activity of isolates was determined by method of perpendicular strokes. Results. From the surface of raw seeds bacterial isolates were secreted with different quantitative and qualitative structures of microflora. The seeds of cultivars of tomatoes processed by seed dresser were characterized by presence only of 4 kinds of colonies. On the raw seeds there were revealed 5 isolates with antagonistic activity in as to the test-cultures. Conclusions. Microbiothat of seeds of cultivars of tomatoes not processed by fungicide is more various, than that of treated. It is determined that isolates OB1, OB2, ChA3, KM2 and FL1 from epiphytic microflora of not processed seeds of tomatoes are perspective for restriction of development of causal organisms of bacterial cancer, bacterial mottling and black bacterial spot.