| Abstrakt: |
The purpose of the research was to evaluate the promising Russkaya Belaya variety that meets the requirements of the modern market for resistance to economically significant diseases. The research was carried out in the conditions of Moscow oblast in 2017–2020 on the basis of the Federal Scientific Vegetable Center (FSBSI FSVC). Agrometeorological conditions during the period of operation were optimal for the development of harmful phytopathogens, which made it possible to objectively assess a promising variety for disease resistance. The pathogenic complex structure analysis of vegetable beans, represented in all years by the dominant pathogens of chocolate spotting (Botrytis fabae), ascochytosis (Ascochyta fabae), and fusarium wilt (Fusarium solani, F. oxysporum v.oxysporum, F.sambucinum, F. sporotrichiella), was carried out. In some years, epiphytotics of bean rust (Uromyces viciae-fabae) and stemphyliosis (Stemphylium spp.) have been recorded. Due to climate change, there has been an increase in the harmfulness of viral pathogens, in particular the Вean yellow mosaic virus (BYMV) and Сucumber mosaic virus (CMV). The immunological assessment conducted against the background of a tense infectious background in various years showed that the Russkaya Belaya variety has a high resistance to diseases of fungal and viral etiology relative to other zoned and widely grown varieties of vegetable beans. During the epiphytotic years, the degree of lesion with ascochytosis, chocolate spotting, fusarium, and yellow mosaic bean virus remained low and did not exceed 14%. Along with a number of valuable features, the promising Russkaya Belaya variety can be recommended for cultivation in regions with unfavorable epiphytotic conditions. [ABSTRACT FROM AUTHOR] |
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