Evaluation of the causing agent of apple scab- fungus Venturia inaequalis sensitivity to cresoxym-methyl by various methods
Abstract
Studies have been carried out to assess the sensitivity of the fungus V. inaequalis to the preparation cresoxim-methyl from the strobilurin group by the method of conidia germination and the molecular-genetic method (detection of G143A mutation). A decrease of the apple scab causative agent sensitivity to cresoxim-methyl in the industrial gardens with the annual one-two-time application of preparations from strobilurins in the garden protection system has been revealed. It is determined that 4-fold sequential application in the garden of the fungicide Strobi, 500 g / kg w. leads to 8.9 times loss of the fungus V. inaequalis sensitivity to cresoxim-methyl compared to the control. In the populations of the fungus V. inaequalis, by PCR-RFLP method the isolates with the G143A mutation have been revealed, determining them as resistant to cresoxim-methyl.
About the Authors
V. S. Komardina
RUE «Institute оf Plant Protection»
Belarus
Belarus
a/c Priluki, Minsk region
E. V. Vasekha
RUE «Institute оf Plant Protection»
Belarus
Belarus
a/c Priluki, Minsk region
R. I. Pleskatsevich
RUE «Institute оf Plant Protection»
Belarus
Belarus
a/c Priluki, Minsk region
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Review
For citations:
Komardina V.S., Vasekha E.V., Pleskatsevich R.I. Evaluation of the causing agent of apple scab- fungus Venturia inaequalis sensitivity to cresoxym-methyl by various methods. Plant Protection. 2020;(44):96-103. (In Russ.)
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