Open Access

Table 2

Influence of treatment of sunflower seeds of variety R-453 with the laboratory samples of the microbiological preparations on a level of seedlings infection with Phoma macdonaldii in lab conditions under artificial infection using a method of ‘agar blocks’

Variant Titer, CRU per g Infected seedlings, % Biological efficiency, %,
Infection level of the main root, points Totally
0 1 2 3
Control, without treatment - 0 0 30.0 40.0 70.0* -
Fungi-producers
M-24 Penicillium sp. 7.8х109 90.0 0 10.0 0 10.0 85.7
Xk-1 Chaetomium olivaceum 4.0х107 80.0 0 20.0 0 20.0 71.4
Pr-1 Penicillium rugulosum 6.0х109 70.0 0 0 30.0 30.0 57.1
T-2 Trichoderma sp. 2.8х109 60.0 30.0 0 10.0 40.0 42.9
Tt-1 Talaromyces trachispermus 6.8х107 60.0 10.0 10.0 20.0 40.0 42.9
Bacteria-producers
5B-1 B. subtilis 5,0х1010 80.0 0 20.0 0 20.0 71.4
5-3 Bacillus sp. 3,0х1010 70.0 0 0 30.0 30.0 57.1
B-5 B. licheniformis 4,8х1010 70.0 10.0 10.0 10.0 30.0 57.1
11-1 Bacillus sp. 2,0х1010 70.0 20.0 10,0 0 30.0 57.1
Oif 2-1 Pseudomonas sp. 1,8х1011 80.0 0 10.0 10.0 20.0 71.4
14-3 P. chlororaphis 3,0х1011 80.0 0 10.0 10.0 20.0 71.4
Sgc-1 Pseudomonas sp. 2,8х1011 70.0 20.0 10.0 0 30.0 57.1

*Note: a degree of sunflower seedlings infection, points:

0 – healthy root;

1 – darkening of root tips, formation of lateral roots;

2 – darkening of root by one third or to the middle, formation of lateral roots;

3 – overwinding of rot in the middle part of a root or between hypocotyl and root, formation of lateral roots

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