Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection
Winter hardiness is a major constraint for autumn sown crops in temperate regions, and thus an important breeding goal in the development of new winter wheat varieties. Winter hardiness is though influenced by many environmental factors rendering phenotypic selection under field conditions a difficu...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-10-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fpls.2019.01195/full |
| _version_ | 1811211053928808448 |
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| author | Sebastian Michel Franziska Löschenberger Jakob Hellinger Verena Strasser Christian Ametz Bernadette Pachler Ellen Sparry Hermann Bürstmayr |
| author_facet | Sebastian Michel Franziska Löschenberger Jakob Hellinger Verena Strasser Christian Ametz Bernadette Pachler Ellen Sparry Hermann Bürstmayr |
| author_sort | Sebastian Michel |
| collection | DOAJ |
| description | Winter hardiness is a major constraint for autumn sown crops in temperate regions, and thus an important breeding goal in the development of new winter wheat varieties. Winter hardiness is though influenced by many environmental factors rendering phenotypic selection under field conditions a difficult task due to irregular occurrence or absence of winter damage in field trials. Controlled frost tolerance tests in growth chamber experiments are, on the other hand, even with few genotypes, often costly and laborious, which makes a genomic breeding strategy for early generation selection an attractive alternative. The aims of this study were thus to compare the merit of marker-assisted selection using the major frost tolerance QTL Fr-A2 with genomic prediction for winter hardiness and frost tolerance, and to assess the potential of combining both measures with a genomic selection index using a high density marker map or a reduced set of pre-selected markers. Cross-validation within two training populations phenotyped for frost tolerance and winter hardiness underpinned the importance of Fr-A2 for frost tolerance especially when upweighting its effect in genomic prediction models, while a combined genomic selection index increased the prediction accuracy for an independent validation population in comparison to training with winter hardiness data alone. The prediction accuracy could moreover be maintained with pre-selected marker sets, which is highly relevant when employing cost reducing fingerprinting techniques such as targeted genotyping-by-sequencing. Genomic selection showed thus large potential to improve or maintain the performance of winter wheat for these difficult, costly, and laborious to phenotype traits. |
| first_indexed | 2024-04-12T05:06:17Z |
| format | Article |
| id | doaj.art-7feedf7da36948a1b8dc16023a6974bd |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-12T05:06:17Z |
| publishDate | 2019-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-7feedf7da36948a1b8dc16023a6974bd2022-12-22T03:46:52ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2019-10-011010.3389/fpls.2019.01195472758Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic SelectionSebastian Michel0Franziska Löschenberger1Jakob Hellinger2Verena Strasser3Christian Ametz4Bernadette Pachler5Ellen Sparry6Hermann Bürstmayr7Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Tulln, AustriaSaatzucht Donau GesmbH. & CoKG, Probstdorf, AustriaDepartment of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Tulln, AustriaDepartment of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Tulln, AustriaSaatzucht Donau GesmbH. & CoKG, Probstdorf, AustriaSaatzucht Donau GesmbH. & CoKG, Probstdorf, AustriaC&M Seeds, Palmerston, ON, CanadaDepartment of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Tulln, AustriaWinter hardiness is a major constraint for autumn sown crops in temperate regions, and thus an important breeding goal in the development of new winter wheat varieties. Winter hardiness is though influenced by many environmental factors rendering phenotypic selection under field conditions a difficult task due to irregular occurrence or absence of winter damage in field trials. Controlled frost tolerance tests in growth chamber experiments are, on the other hand, even with few genotypes, often costly and laborious, which makes a genomic breeding strategy for early generation selection an attractive alternative. The aims of this study were thus to compare the merit of marker-assisted selection using the major frost tolerance QTL Fr-A2 with genomic prediction for winter hardiness and frost tolerance, and to assess the potential of combining both measures with a genomic selection index using a high density marker map or a reduced set of pre-selected markers. Cross-validation within two training populations phenotyped for frost tolerance and winter hardiness underpinned the importance of Fr-A2 for frost tolerance especially when upweighting its effect in genomic prediction models, while a combined genomic selection index increased the prediction accuracy for an independent validation population in comparison to training with winter hardiness data alone. The prediction accuracy could moreover be maintained with pre-selected marker sets, which is highly relevant when employing cost reducing fingerprinting techniques such as targeted genotyping-by-sequencing. Genomic selection showed thus large potential to improve or maintain the performance of winter wheat for these difficult, costly, and laborious to phenotype traits.https://www.frontiersin.org/article/10.3389/fpls.2019.01195/fullbread wheatcold tolerancecopy number variationgenomic predictionwinter survival |
| spellingShingle | Sebastian Michel Franziska Löschenberger Jakob Hellinger Verena Strasser Christian Ametz Bernadette Pachler Ellen Sparry Hermann Bürstmayr Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection Frontiers in Plant Science bread wheat cold tolerance copy number variation genomic prediction winter survival |
| title | Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection |
| title_full | Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection |
| title_fullStr | Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection |
| title_full_unstemmed | Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection |
| title_short | Improving and Maintaining Winter Hardiness and Frost Tolerance in Bread Wheat by Genomic Selection |
| title_sort | improving and maintaining winter hardiness and frost tolerance in bread wheat by genomic selection |
| topic | bread wheat cold tolerance copy number variation genomic prediction winter survival |
| url | https://www.frontiersin.org/article/10.3389/fpls.2019.01195/full |
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