Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.)
<b> </b>Variation and inheritance of anther extrusion and its effects on <i>Fusarium</i> head blight were studied. On a 0 to 9 scale, variation ranged from 1 to 6 in a North American oat panel and from 0 to 8 in a Nordic population. The inheritance was studied in two recombin...
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MDPI AG
2020-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/3/354 |
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| author | Selamawit Tekle Sissela Stråbø Schofer Xinyao He Yanhong Dong Åsmund Bjørnstad |
| author_facet | Selamawit Tekle Sissela Stråbø Schofer Xinyao He Yanhong Dong Åsmund Bjørnstad |
| author_sort | Selamawit Tekle |
| collection | DOAJ |
| description | <b> </b>Variation and inheritance of anther extrusion and its effects on <i>Fusarium</i> head blight were studied. On a 0 to 9 scale, variation ranged from 1 to 6 in a North American oat panel and from 0 to 8 in a Nordic population. The inheritance was studied in two recombinant inbred line populations (Fiia × Stormogul and Svea × Stormogul). Fiia and Svea are recent white-seeded cultivars with low to medium anther extrusion, while Stormogul is an old black-seeded cultivar with high anther extrusion. Highly significant transgressive segregations and high heritabilities were observed (<i>h</i><sup>2</sup><i> </i>= 0.91 in Fiia × Stormogul and<i> h</i><sup>2</sup><i> </i>= 0.83 in Svea × Stormogul). Another extrusion was negatively correlated with <i>Fusarium</i> head blight and deoxynivalenol in spawn-inoculated field experiments, but significantly only in Fiia × Stormogul where the range in resistance was widest. Correlations were reversed in spray-inoculated greenhouse experiments, apparently spraying open florets defeated the avoidance mechanism. Anther extrusion may help oat avoid <i>Fusarium </i>infection in the field, but the genetic variance is inadequate and high anther extrusion is rare in modern genepools. |
| first_indexed | 2024-12-20T08:09:00Z |
| format | Article |
| id | doaj.art-49797a7d8bd54c46b092f0791feb8a7d |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-12-20T08:09:00Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-49797a7d8bd54c46b092f0791feb8a7d2022-12-21T19:47:19ZengMDPI AGAgronomy2073-43952020-03-0110335410.3390/agronomy10030354agronomy10030354Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.)Selamawit Tekle0Sissela Stråbø Schofer1Xinyao He2Yanhong Dong3Åsmund Bjørnstad4Faculty of Biosciences, Department of Plant Sciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1432 Ås, NorwayFaculty of Biosciences, Department of Plant Sciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1432 Ås, NorwayFaculty of Biosciences, Department of Plant Sciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1432 Ås, NorwayDepartment of Plant Pathology, University of Minnesota, St. Paul, Minnesota MN 55108, USAFaculty of Biosciences, Department of Plant Sciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1432 Ås, Norway<b> </b>Variation and inheritance of anther extrusion and its effects on <i>Fusarium</i> head blight were studied. On a 0 to 9 scale, variation ranged from 1 to 6 in a North American oat panel and from 0 to 8 in a Nordic population. The inheritance was studied in two recombinant inbred line populations (Fiia × Stormogul and Svea × Stormogul). Fiia and Svea are recent white-seeded cultivars with low to medium anther extrusion, while Stormogul is an old black-seeded cultivar with high anther extrusion. Highly significant transgressive segregations and high heritabilities were observed (<i>h</i><sup>2</sup><i> </i>= 0.91 in Fiia × Stormogul and<i> h</i><sup>2</sup><i> </i>= 0.83 in Svea × Stormogul). Another extrusion was negatively correlated with <i>Fusarium</i> head blight and deoxynivalenol in spawn-inoculated field experiments, but significantly only in Fiia × Stormogul where the range in resistance was widest. Correlations were reversed in spray-inoculated greenhouse experiments, apparently spraying open florets defeated the avoidance mechanism. Anther extrusion may help oat avoid <i>Fusarium </i>infection in the field, but the genetic variance is inadequate and high anther extrusion is rare in modern genepools.https://www.mdpi.com/2073-4395/10/3/354anther extrusionanther retentiondeoxynivalenolfusarium head blightspray inoculationspawn inoculation |
| spellingShingle | Selamawit Tekle Sissela Stråbø Schofer Xinyao He Yanhong Dong Åsmund Bjørnstad Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) Agronomy anther extrusion anther retention deoxynivalenol fusarium head blight spray inoculation spawn inoculation |
| title | Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) |
| title_full | Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) |
| title_fullStr | Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) |
| title_full_unstemmed | Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) |
| title_short | Variation in Anther Extrusion and Its Impact on <i>Fusarium</i> Head Blight and Deoxynivalenol Content in Oat (<i>Avena sativa</i> L.) |
| title_sort | variation in anther extrusion and its impact on i fusarium i head blight and deoxynivalenol content in oat i avena sativa i l |
| topic | anther extrusion anther retention deoxynivalenol fusarium head blight spray inoculation spawn inoculation |
| url | https://www.mdpi.com/2073-4395/10/3/354 |
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