Crown rust on oat genotypes with different levels of resistance: damages and losses
ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust in oat genotypes. New resistance sources are constantly required for yield stabilization and costs reduction. This study aimed to characterize the crown rust resistance of oat...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
2021-01-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/pdf/cr/v51n3/1678-4596-cr-51-03-202000298.pdf |
| _version_ | 1819175548219293696 |
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| author | Maike Lovatto Gerarda Beatriz Pinto da Silva Filipe Kalikoski Coelho José Antonio Martinelli Marcelo Teixeira Pacheco Luiz Carlos Federizzi Carla Andréa Delatorre |
| author_facet | Maike Lovatto Gerarda Beatriz Pinto da Silva Filipe Kalikoski Coelho José Antonio Martinelli Marcelo Teixeira Pacheco Luiz Carlos Federizzi Carla Andréa Delatorre |
| author_sort | Maike Lovatto |
| collection | DOAJ |
| description | ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust in oat genotypes. New resistance sources are constantly required for yield stabilization and costs reduction. This study aimed to characterize the crown rust resistance of oat genotypes and the disease´s productive and economic impact. Experiments were conducted in two environments, with and without chemical control. Resistance was measured by disease progress, apparent rate of infection, final severity and pustule size. Damages were based on reduction of yield, 1000 grain mass and hectoliter mass. UFRGS16Q6030-2 was immune. In both environments, UFRGS166091-2 and URS Brava exhibited the greatest level of resistance and the smallest grain yield reduction, while URS 22 was highly susceptible, reducing more than 70% of its grain yield. These results surpass the negative impacts of the disease previously reported in oats, particularly related to grain yield. The data presented in this paper highlighted the importance of genetic resistance, particularly partial resistance, for maintaining oat genetic yield potential, reducing environmental contamination with less fungicides, and increasing economic gains with oat cultivation. |
| first_indexed | 2024-12-22T20:56:37Z |
| format | Article |
| id | doaj.art-b588d044a452453197bec254610a8e00 |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-12-22T20:56:37Z |
| publishDate | 2021-01-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-b588d044a452453197bec254610a8e002022-12-21T18:12:56ZengUniversidade Federal de Santa MariaCiência Rural1678-45962021-01-0151310.1590/0103-8478cr20200298Crown rust on oat genotypes with different levels of resistance: damages and lossesMaike Lovattohttps://orcid.org/0000-0002-1857-7022Gerarda Beatriz Pinto da Silvahttps://orcid.org/0000-0002-9311-6242Filipe Kalikoski Coelhohttps://orcid.org/0000-0002-3725-3808José Antonio Martinellihttps://orcid.org/0000-0001-5566-0354Marcelo Teixeira Pachecohttps://orcid.org/0000-0001-5147-7448Luiz Carlos Federizzihttps://orcid.org/0000-0003-3954-2766Carla Andréa Delatorrehttps://orcid.org/0000-0002-1644-3813ABSTRACT: The evolution in virulence of Puccinia coronata f. sp. avenae has challenged the genetic resistance to crown rust in oat genotypes. New resistance sources are constantly required for yield stabilization and costs reduction. This study aimed to characterize the crown rust resistance of oat genotypes and the disease´s productive and economic impact. Experiments were conducted in two environments, with and without chemical control. Resistance was measured by disease progress, apparent rate of infection, final severity and pustule size. Damages were based on reduction of yield, 1000 grain mass and hectoliter mass. UFRGS16Q6030-2 was immune. In both environments, UFRGS166091-2 and URS Brava exhibited the greatest level of resistance and the smallest grain yield reduction, while URS 22 was highly susceptible, reducing more than 70% of its grain yield. These results surpass the negative impacts of the disease previously reported in oats, particularly related to grain yield. The data presented in this paper highlighted the importance of genetic resistance, particularly partial resistance, for maintaining oat genetic yield potential, reducing environmental contamination with less fungicides, and increasing economic gains with oat cultivation.http://www.scielo.br/pdf/cr/v51n3/1678-4596-cr-51-03-202000298.pdfAvena sativaPuccinia coronata f. sp. avenaegenetic resistanceeconomic analysis. |
| spellingShingle | Maike Lovatto Gerarda Beatriz Pinto da Silva Filipe Kalikoski Coelho José Antonio Martinelli Marcelo Teixeira Pacheco Luiz Carlos Federizzi Carla Andréa Delatorre Crown rust on oat genotypes with different levels of resistance: damages and losses Ciência Rural Avena sativa Puccinia coronata f. sp. avenae genetic resistance economic analysis. |
| title | Crown rust on oat genotypes with different levels of resistance: damages and losses |
| title_full | Crown rust on oat genotypes with different levels of resistance: damages and losses |
| title_fullStr | Crown rust on oat genotypes with different levels of resistance: damages and losses |
| title_full_unstemmed | Crown rust on oat genotypes with different levels of resistance: damages and losses |
| title_short | Crown rust on oat genotypes with different levels of resistance: damages and losses |
| title_sort | crown rust on oat genotypes with different levels of resistance damages and losses |
| topic | Avena sativa Puccinia coronata f. sp. avenae genetic resistance economic analysis. |
| url | http://www.scielo.br/pdf/cr/v51n3/1678-4596-cr-51-03-202000298.pdf |
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