Greenbug resistance in barley landraces from Uzbekistan
Background. The greenbug (Sсhizaphis graminum Rondani) can significantly reduce the yield of barley and other cereals in the southern regions of Russia. Cultivation of resistant varieties can significantly limit the pathogen’s harmfulness. At the same time, specific interaction with the genotypes of...
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N.I. Vavilov All-Russian Institute of Plant Genetic Resources
2021-10-01
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| Series: | Труды по прикладной ботанике, генетике и селекции |
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| Online Access: | https://elpub.vir.nw.ru/jour/article/view/1044 |
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| author | E. E. Radchenko K. D. Dyatlova D. E. Akimova I. A. Zveinek |
| author_facet | E. E. Radchenko K. D. Dyatlova D. E. Akimova I. A. Zveinek |
| author_sort | E. E. Radchenko |
| collection | DOAJ |
| description | Background. The greenbug (Sсhizaphis graminum Rondani) can significantly reduce the yield of barley and other cereals in the southern regions of Russia. Cultivation of resistant varieties can significantly limit the pathogen’s harmfulness. At the same time, specific interaction with the genotypes of the host plant, characteristic of S. graminum, requires a continuous search for new resistance donors to broaden the genetic diversity of barley cultivars. Materials and methods. The resistance of 178 accessions of barley landraces from Uzbekistan to the Krasnodar greenbug population was tested in laboratory experiments. Juvenile plants were infested with aphids of different ages, and when the susceptible control died (cv. ‘Belogorsky’), resistance was assessed on a 0 to 10 (plant death) rating scale. Plants with a damage rate of 1–4 points (up to 30% of the leaf surface being damaged) belonged to the resistant class; damage rate of 5–8 points indicated moderate resistance of plants, and that of 9–10 meant susceptibility. In addition, we assessed the aphid damage of the winter barley cultivar ‘Post’, protected by the previously identified resistance gene Rsg1.Results and conclusions. We identified 52 barley accessions as heterogeneous for the studied trait. In six accessions, plants with high (points 3 to 4) and moderate (5 to 8) resistance were identified; 6 accessions were differentiated into 3 phenotypic classes: resistant, moderately resistant, and susceptible; and in 40 accessions the manifestation of the resistance component varied within 5 to 7 points (from 31 to 60% of the leaf surface being damaged). The distinctly expressed resistance of 12 accessions is controlled by alleles of resistance genes that differ from Rsg1. After selection for resistance, the identified accessions can be used in breeding. |
| format | Article |
| id | doaj-art-dd2a364115e5482285b95bbec48506af |
| institution | Kabale University |
| issn | 2227-8834 2619-0982 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | N.I. Vavilov All-Russian Institute of Plant Genetic Resources |
| record_format | Article |
| series | Труды по прикладной ботанике, генетике и селекции |
| spelling | doaj-art-dd2a364115e5482285b95bbec48506af2025-02-03T08:31:14ZengN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesТруды по прикладной ботанике, генетике и селекции2227-88342619-09822021-10-01182318218510.30901/2227-8834-2021-3-182-185554Greenbug resistance in barley landraces from UzbekistanE. E. Radchenko0K. D. Dyatlova1D. E. Akimova2I. A. Zveinek3N.I. Vavilov All-Russian Institute of Plant Genetic ResourcesNational Research Lobachevsky State University of Nizhny NovgorodN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesBackground. The greenbug (Sсhizaphis graminum Rondani) can significantly reduce the yield of barley and other cereals in the southern regions of Russia. Cultivation of resistant varieties can significantly limit the pathogen’s harmfulness. At the same time, specific interaction with the genotypes of the host plant, characteristic of S. graminum, requires a continuous search for new resistance donors to broaden the genetic diversity of barley cultivars. Materials and methods. The resistance of 178 accessions of barley landraces from Uzbekistan to the Krasnodar greenbug population was tested in laboratory experiments. Juvenile plants were infested with aphids of different ages, and when the susceptible control died (cv. ‘Belogorsky’), resistance was assessed on a 0 to 10 (plant death) rating scale. Plants with a damage rate of 1–4 points (up to 30% of the leaf surface being damaged) belonged to the resistant class; damage rate of 5–8 points indicated moderate resistance of plants, and that of 9–10 meant susceptibility. In addition, we assessed the aphid damage of the winter barley cultivar ‘Post’, protected by the previously identified resistance gene Rsg1.Results and conclusions. We identified 52 barley accessions as heterogeneous for the studied trait. In six accessions, plants with high (points 3 to 4) and moderate (5 to 8) resistance were identified; 6 accessions were differentiated into 3 phenotypic classes: resistant, moderately resistant, and susceptible; and in 40 accessions the manifestation of the resistance component varied within 5 to 7 points (from 31 to 60% of the leaf surface being damaged). The distinctly expressed resistance of 12 accessions is controlled by alleles of resistance genes that differ from Rsg1. After selection for resistance, the identified accessions can be used in breeding.https://elpub.vir.nw.ru/jour/article/view/1044hordeum vulgare l.schizaphis graminum rondanigenes for resistanceplant breeding |
| spellingShingle | E. E. Radchenko K. D. Dyatlova D. E. Akimova I. A. Zveinek Greenbug resistance in barley landraces from Uzbekistan Труды по прикладной ботанике, генетике и селекции hordeum vulgare l. schizaphis graminum rondani genes for resistance plant breeding |
| title | Greenbug resistance in barley landraces from Uzbekistan |
| title_full | Greenbug resistance in barley landraces from Uzbekistan |
| title_fullStr | Greenbug resistance in barley landraces from Uzbekistan |
| title_full_unstemmed | Greenbug resistance in barley landraces from Uzbekistan |
| title_short | Greenbug resistance in barley landraces from Uzbekistan |
| title_sort | greenbug resistance in barley landraces from uzbekistan |
| topic | hordeum vulgare l. schizaphis graminum rondani genes for resistance plant breeding |
| url | https://elpub.vir.nw.ru/jour/article/view/1044 |
| work_keys_str_mv | AT eeradchenko greenbugresistanceinbarleylandracesfromuzbekistan AT kddyatlova greenbugresistanceinbarleylandracesfromuzbekistan AT deakimova greenbugresistanceinbarleylandracesfromuzbekistan AT iazveinek greenbugresistanceinbarleylandracesfromuzbekistan |