Intraspecific variability of Puccinia triticina on hexaploid Triticum species and Aegilops trivialis
The analysis of pathogen intraspecific differentiation is a necessary stage for the development of a strategy of wheat leaf rust resistance breeding. To characterize the structure of the populations, virulence to Thatcher lines with leaf rust resistance genes (TcLr) and microsatellite markers may be...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders
2017-11-01
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| Series: | Вавиловский журнал генетики и селекции |
| Subjects: | |
| Online Access: | https://vavilov.elpub.ru/jour/article/view/1187 |
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| Summary: | The analysis of pathogen intraspecific differentiation is a necessary stage for the development of a strategy of wheat leaf rust resistance breeding. To characterize the structure of the populations, virulence to Thatcher lines with leaf rust resistance genes (TcLr) and microsatellite markers may be used. The purpose of the present research is to study the intraspecific variability of the fungus Puccinia triticina Erikss. on Triticum L. hexaploid species and Aegilops trivialis (Zhuk.) Migusch. et Chak. using SSR-markers. Leaves of Triticum aestivum L., T. compactum Host., T. macha Dekapr. et Menabde, T. petropavlovskyi Udacz. et Migusch., T. spelta L., T. sphaerococcum Perc., T. vavilovii Jakubz. and Ae. trivialis with uredinia were collected on the experimental field of the Dagestan experiment station of VIR (Derbent) in 2014. For SSR-analysis 109, monopustule isolates previously characterized for virulence to 20 TcLr-lines were used. As a result of 18 microsatellite loci polymorphism analysis, 16 genotypes were identified. Genetic similarity between collections of isolates from the hexaploid types of wheat was significantly higher based on microsatellite markers than based on virulence. Microsatellite analysis confirmed a high similarity between Derbent isolates of P. triticina coming from the hexaploid Triticum species (including isolates from common wheat) and Aegilops trivialis. |
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| ISSN: | 2500-3259 |