Parasitic activity of soil phytopathogens on spring wheat varieties in the forest-steppe of Western Siberia

E. Yu. Toropova^{1, 2}, I.G. Vorob’eva^{2, 3}, A.A.Kirichenko^{1, 2}, R.I. Trunov^1
1Novosibirsk State Agrarian University, ul. Dobrolyubova, 160, Novosibirsk, 630039, Russian Federation
²All-Russian Research Institute of Phytopathology, ul. Institut, vl. 5, r.p. Bol’shie Vyazemy, Odintsovskii r-n, Moskovskaya obl., 143050, Russian Federation
³Novosibirsk State Pedagogical University, ul. Vilyuiskaya, 28, Novosibirsk, 630126, Russian Federation

Abstract. The studies aimed to determine the strength of the influence of spring wheat varieties and year conditions on the development of root rot. The work was carried out in 2020-2022 in the forest-steppe of Western Siberia on 20 varieties of spring wheat from different regions of Russia and the world, the soil was leached chernozem. The induction of soil suppression was determined by the restriction of colony growth, in comparison with non-rhizosphere soil. The main phytopathogens on the underground organs of spring wheat were Bipolaris sorokiniana and Fusarium fungi. The highest difference in varieties (up to 2.8 times) in the damage of underground organs of spring wheat varieties was manifested in the germination phase, then there was a smoothing of varietal differences. Favourable for Fusarium fungi was 2020, for the development of Helminthosporium blight – 2021. The biological diversity of Fusarium fungi in 2021 was lower than in 2020 – 7 and 10 species, respectively. The suppressiveness of the rhizospheric soil of varieties to Fusarium fungi, in comparison with the non-rhizospheric soil, was 1.2-6.8 times higher. A moderate coupling was observed between the suppressiveness of the rhizosphere soil and the development of root rot (r=-0.53±0.40...-0.61±0.213). The strength of the influence of the “year” factor on the induction of rhizosphere soil suppression by varieties varied from 29.2% to 90.9%, the strength of the influence of varietal characteristics reached 33.4% by the maturity phase.

Keywords: spring wheat (Triticum aestivum L.); rhizosphere; monitoring; phytopathogen; root rot; soil suppression.

Author Details: E. Yu. Toropova, D. Sc. (Biol.), prof., head of laboratory; I. G. Vorob’eva, D. Sc. (Biol.), senior research fellow, prof.; A. A. Kirichenko, Cand. Sc. (Agr.), assoc. prof., research fellow; R.I. Trunov, postgraduate student (е-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).

For citation: Toropova EYu, Vorob’eva IG, Kirichenko AA, et al. [Parasitic activity of soil phytopathogens on spring wheat varieties in the forest-steppe of Western Siberia]. Dostizheniya nauki i tekhniki APK. 2022;36(8):37-43. Russian. doi: 10.53859/02352451_2022_36_8_37.