New races of rust pathogen on sunflower in Russia
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Nina Araslanova
,
Ekaterina Lepeshko
Abstract
Over the past two decades, there was observed a widespread of rust on sunflower in some regions of Russia. The identification of the racial structure of Puccinia helianthi populations in Russia has not been done since the early 80s of the last century. At that time, races 100 and 300 were identified. In our recent study, in addition to these races, new biotypes: 700, 710, 722, 772 were identified for the first time. The purpose of this study is to determine the racial identity of 160 P. helianthi isolates collected from 2018 to 2020 in the Rostov, Saratov, and Krasnodar regions. We used eight standard differentiating lines of sunflower: SM-90, SM 29, R-386, HАR-1, HАR-2, HAR-3, HAR-4, HAR-5. Sunflower variety VNIIMK 8883 was used as a differentiator susceptible to all races of the pathogen. In addition to the six races mentioned above, we identified 11 more new races for the first time: 304, 351, 352, 364, 704, 736, 740, 741, 745, 760, 762. Race 700 prevailed among the isolates collected in the Rostov region in 2020; we also identified single specimens of races 760, 762. Thus, 17 races of P. helianthi were found on sunflower in three regions of the Russian Federation. Other races may be also present here, so further research is required.
Acknowledgment
The authors express gratitude to fellow scientists from the United States: T. Gulya, S. Markell, R. Harveson, M. Gilley, and A. Friskop for the support and for the provided seeds of differentiator lines of sunflower resistance to rust.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Shuttle breeding in sunflower lines development
- Efficiency of selection–biotechnological system of selection for creation of breeding source material of sunflower resistant to herbicides and broomrape
- New races of rust pathogen on sunflower in Russia
- Phyllody in sunflowers; 44 years to explain the appearance of aberrant flowers
- Effect of different dosage of EMS on germination, survivability and morpho-physiological characteristics of sunflower seedling
- The state of soil microbiotes during sunflower growing with an herbicide of imidazolinone group
Articles in the same Issue
- Frontmatter
- Research Articles
- Shuttle breeding in sunflower lines development
- Efficiency of selection–biotechnological system of selection for creation of breeding source material of sunflower resistant to herbicides and broomrape
- New races of rust pathogen on sunflower in Russia
- Phyllody in sunflowers; 44 years to explain the appearance of aberrant flowers
- Effect of different dosage of EMS on germination, survivability and morpho-physiological characteristics of sunflower seedling
- The state of soil microbiotes during sunflower growing with an herbicide of imidazolinone group
