Open AccessTHE DETERMINATION OF THE PHYTOTOXICITY AND GROWTHSTIMULATING ACTIVITY OF PROMISING ANTAGONIST STRAINS OF FUSARIUM BLIGHT PATHOGENS ON THE OIL FLAX CROP
Author(s) -
A.Kh. Voronkova
Publication year - 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.25230/conf11-2021-148-152
Subject(s) - germination , fusarium , biology , crop , wilting , horticulture , bacillus subtilis , blight , root rot , shoot , phytotoxicity , agronomy , bacteria , genetics
The article presents the test results on determination of the phytotoxicity and growth-promoting activity of the antagonist strains of oil flax Fusarium blight pathogens identified at the first stages of screening from the collection of the biomethod laboratory of V.S. Pustovoit All-Russian Research Institute of Oil Crops. We established that the promising strains of fungi and bacteria do not have a negative effect on the germination of oil flax seeds and do not cause wilting of seedlings. In all variants we observed an increase in seed germination by 5.0–13.0 % in comparison with the control. The bacterial strains К 1-2 B. subtilis and 11-3 Bacillus sp. showed the best results in increasing the root length (by 102.0–108.4 %) and the root mass (by 100 %) compared to the control. Among the fungi strains, T-1 Trichoderma sp. showed an increase in the root length and mass by 55.1 % and 66.7 %, respectively, in comparison with the control. We also noted the effect of all studied strains on the shoot length and mass in comparison with the control but to a lesser extent than on the root (by 2.3–35.7 % and 20.0–62.5 %, respectively).