EFFECT OF CAUSAL AGENT OF BASAL BACTERIOSIS ON SEED GERMINATION AND ROOT GROWTH OF DIFFERENT WHEAT VARIETIES

Aim. To investigate the effect of causal agent of basal bacteriosis Pseudomonas syringae pv. atrofaciens and its lipopolysacharide (LPS) on seed germination and growth of seedlings of various wheat varieties. Materials and methods. Seeds of thirteen varieties of spring and winter wheat of Ukrainian and foreign selection were used for the study. For the treatment of seeds, live cells and LPS of P. syringae pv. atrofaciens UKM V-1013 from the collection of live cultures of the Department of Phytopathogenic Bacteria of the Zabolotny Institute of Microbiology and Virology of NASU were used. The seed germination was registered on the second day after the treatment, the length of sprouts – on the fourth day. Results. Treatment of wheat seeds of the most varieties with a suspension of living cells and LPS of P. syringae pv. atrofaciens UKM B-1013 led to the decrease in their germination. The germination of seeds of winter wheat varieties of Ukrainian selection Podolyanka, Stolichnaya and Zolotokolosaya did not change reliably when was treated with living cell suspension. LPS of P. syrynae pv. atrofaciens UKM B-1013 caused statistically significant stimulation of growth of wheat sprouts of the Stolichnaya variety. Conclusion. Winter wheat of Ukrainian selection Stolichnaya can be considered as promising variety for growing in the regions of Ukraine with a high risk of infection with the causal agent of basal bacteriosis