Abstract
Based on the results of immunological assessments and rejection of the material by phenotype, 327 sources and 79 donors of immunity were selected from spring wheat, 27 and 23 from winter wheat, respectively. Applying PCR diagnostic method, Lr genes were found in the selected samples of spring wheat. Screening revealed the presence of the following genes in the studied samples. They are Lr9, Lr19, Lr24, Lr 34, Lr1, Lr10, Lr20 and Lr26. Within selection samples of the Central Russian branch, the prevalence of lines with the Lr19 gene in combination with inefficient genes Lr10, Lr20 and Lr26 was revealed. Spring soft wheat cultivation lines adapted to zonal conditions have been developed, combining in their phenotype resistance to the main phytopathogens of the region with valuable economic properties. In 2019, a variety of spring soft wheat in memory of Plahotnik was transferred to the State Export Commission for testing.
Highlights
For the Central Black Earth Region, it is a promising way to create a collection of sources and genetic donors of resistance of samples of commercial winter and spring wheat species for dangerous diseases caused by parasitic fungi
Findings of screening of spring and winter wheat collections carried out by Russian researches indicate that resistant wheat samples to Septoria leaf spot, brown rust, dust and stinking smut are relatively rare [2,3]
The tests were performed in field infectious nurseries of brown rust, Septoria leaf spot, dust and stinking smut
Summary
For the Central Black Earth Region, it is a promising way to create a collection of sources and genetic donors of resistance of samples of commercial winter and spring wheat species for dangerous diseases caused by parasitic fungi. Findings of screening of spring and winter wheat collections carried out by Russian researches indicate that resistant wheat samples to Septoria leaf spot, brown rust, dust and stinking smut are relatively rare [2,3]. It is essential to study the effectiveness of genes that determine resistance to pathogens; to substantiate the qualitative composition of the biomaterial that provides an objective assessment of host plants. The objective of the work was to study and refill the collection of sources and donors of resistance for the selection of wheat for group and (or) complex resistance to Septoria leaf spot, brown rust, dust and stinking smut
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