Influence of genotype on representativeness of Alternaria sp. inside the seeds of winter wheat

  • T. Rozhkova Sumy National Agrarian University, 160, H. Kondratieva str., Sumy, 40021, Ukraine
Keywords: winter wheat; variety; Alternaria sp.; percentage of isolation

Abstract

Goal. To establish the influence of the genotype of winter wheat on the presence of Alternaria sp. in the seeds of winter wheat under different growing conditions, for different periods of time, among varieties from different original institutions of Ukrainian and foreign selection.

Methods. Field — cultivation of wheat varieties in the Forest-Steppe of Ukraine; organizational — collection of seed samples; laboratory — analysis of the mycoflora of winter wheat seeds by biological method on the PGA, determination of Alternaria fungi on the environment of the PCA; analytical and mathematical — analysis of the obtained results and their statistical comparison.

Results. The study of the influence of the variety on the isolation of Alternaria fungi for their cultivation in different years for the period from 2011 to 2020 and in different growing conditions proved the existence of a significant difference in their total amount and number of individual species, especially dominant. Differences were noted in the presence of Alternaria sp. inside the seeds grown in two climatic zones (Polissya and Forest-Steppe), on farms and in experimental fields. Three-year observation of the species of these fungi on two varieties from one originator showed their different isolation: both the presence of certain representatives and the number of their isolation. Analysis of 9 and 17 genotypes of wheat of Ukrainian and foreign selection during 2019 and 2020 also showed a different picture of the population of Alternaria fungi.

Conclusions. Significant influence of genotype on the selection of Alternaria sp. was installed. Based on several years of studying the population of winter wheat seeds with Alternaria fungi, genotypes with a smaller presence were identified: in 2013—2015 — Gordovyta variety, in 2019—2020 — Emil, Pylypivka. It should be borne in mind that fewer alternative fungi reduce the presence of their mycotoxins, but increase the number of other fungi in the mycoflora, sometimes more dangerous.

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Published
2021-09-23
How to Cite
Rozhkova, T. (2021). Influence of genotype on representativeness of Alternaria sp. inside the seeds of winter wheat. Quarantine and Plant Protection, (3), 8-12. https://doi.org/10.36495/2312-0614.2021.3.8-12
Section
SCIENTIFIC RESEARCH