Affiliation:
1. Tatar RIA, a separate structural subdivision of the FRC KazRC RAS
2. All-Russian Research Institute of Plant Protection
Abstract
In the Republic of Tatarstan, due to favorable soil-climatic and market conditions, spring wheat production is developed, but wheat grain yields are limited by a number of unfavorable factors, one of which is a spread of fungal diseases. At the same time, the pressure of pathogenic fungi makes it possible to carry out fruitful breeding work in Tatarstan on resistance to diseases, which is on of the main activity of the Kazan Research Center of the RAS. The purpose of the current study was to estimate ten new varieties for resistance to major fungal diseases. The study on resistance to leafy diseases, such as powdery mildew, stem rust, brown leaf rust, dark brown leaf blotch was carried out at a natural infectious background, to kernel smut on an artificial infectious background inoculating seeds with spores of kernel smut. The study was carried out between the years of 2017 and 2021. The analysis for the possible presence of stem rust resistance genes was performed by a PCR analysis. As a result of the study, there was found out that the varieties ‘Sto let TASSR’, ‘Balkysh’, ‘Khazine’, ‘Chistopolskaya’, ‘Bulyak’ had a complex resistance to all studied diseases. The variety ‘Sitara’ had a strong field resistance to powdery mildew and kernel smut. The variety ‘Barakat’ had a strong field resistance to powdery mildew and leaf rust. The variety ‘Nadira’ was moderately resistant to powdery mildew and dark brown leaf spot. The varieties ‘Ekada 265’ and ‘Ekada 282’ were highly resistant to local stem rust populations. The molecular genetic estimation of the stem rust resistant varieties of spring bread wheat ‘Chistopolskaya’, ‘Sto let TASSR’, ‘Balkysh’, ‘Ekada 282’ for the identification of effective Sr-genes has shown that their resistance is apparently regulated by the Sr31 gene.
Publisher
FSBSI Agricultural Research Center Donskoy
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