Diversity of Virulence Phenotypes of Puccinia Triticina in Different Agroclimatic Zones of the North Caucasus
| Autor: | O. A. Kudinova, O. F. Vaganova, G. V. Volkova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Genetics education.field_of_study biology 010604 marine biology & hydrobiology Population Virulence Fungus biology.organism_classification 01 natural sciences Phenotype Psychiatry and Mental health Wheat leaf rust Diversity index Neuropsychology and Physiological Psychology General Earth and Planetary Sciences education Pathogen Gene General Environmental Science 010606 plant biology & botany |
| Zdroj: | Russian Agricultural Sciences. 46:23-27 |
| ISSN: | 1934-8037 1068-3674 |
| DOI: | 10.3103/s1068367420010188 |
| Popis: | The phenotypic composition of the North Caucasian population of wheat leaf rust pathogen (Puccinia triticina Erikks.) in various agro-climatic zones of the region in 2016-2018 is analyzed. 233 single pustule isolates were studied, of which 212 virulence phenotypes were identified. In all the years of research, a high level of population diversity was established (the Shannon index (Sh) was 0.92-0.99). The dominant phenotype in 2016 was the PHRS phenotype, which was identified in the southern foothill, western Azov and eastern steppe agro-climatic zones. In the population of 2016, phenotypes with a high and medium number of virulence genes prevailed. In 2017, the most represented are the phenotypes of DCRL, LBLL (Western Azov zone) and PCQB (Northern zone). Avirulent phenotype BBBB was common for populations of 20162018. In 2016, a phenotype with virulence to Lr9 (TLGS) was first detected. In 2017 and 2018, phenotypes virulent to the Lr24 gene (PKTT, SFGQ, CFPQ, TKTS, MKTT, LKSR) were detected in the populations of the fungus. A high level of population differences in phenotypic composition between the years of research was established (Rogers index (R) was 0.96 -0.99). |
| Databáze: | OpenAIRE |
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