Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.)
Lodging in wheat (Triticum aestivum L.) is a complicated phenomenon that is influenced by physiological, genetics, and external factors. It causes a great yield loss and reduces grain quality and mechanical harvesting efficiency. Lodging resistance is contributed by various traits, including increas...
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| Format: | Article |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.962253/full |
| _version_ | 1811292193767292928 |
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| author | Yanan Niu Tianxiao Chen Chenchen Zhao Ce Guo Meixue Zhou Meixue Zhou |
| author_facet | Yanan Niu Tianxiao Chen Chenchen Zhao Ce Guo Meixue Zhou Meixue Zhou |
| author_sort | Yanan Niu |
| collection | DOAJ |
| description | Lodging in wheat (Triticum aestivum L.) is a complicated phenomenon that is influenced by physiological, genetics, and external factors. It causes a great yield loss and reduces grain quality and mechanical harvesting efficiency. Lodging resistance is contributed by various traits, including increased stem strength. The aim of this study was to map quantitative trait loci (QTL) controlling stem strength-related features (the number of big vascular bundles, stem diameter, stem wall thickness) using a doubled haploid (DH) population derived from a cross between Baiqimai and Neixiang 5. Field experiments were conducted during 2020–2022, and glasshouse experiments were conducted during 2021–2022. Significant genetic variations were observed for all measured traits, and they were all highly heritable. Fifteen QTL for stem strength-related traits were identified on chromosomes 2D, 3A, 3B, 3D, 4B, 5A, 6B, 7A, and 7D, respectively, and 7 QTL for grain yield-related traits were identified on chromosomes 2B, 2D, 3D, 4B, 7A, and 7B, respectively. The superior allele of the major QTL for the number of big vascular bundle (VB) was independent of plant height (PH), making it possible to improve stem strength without a trade-off of PH, thus improving lodging resistance. VB also showed positive correlations with some of the yield components. The result will be useful for molecular marker-assisted selection (MAS) for high stem strength and high yield potential. |
| first_indexed | 2024-04-13T04:41:49Z |
| format | Article |
| id | doaj.art-aeffe95aba3f434db4d1cbdb4184227b |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-13T04:41:49Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-aeffe95aba3f434db4d1cbdb4184227b2022-12-22T03:01:59ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-07-011310.3389/fpls.2022.962253962253Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.)Yanan Niu0Tianxiao Chen1Chenchen Zhao2Ce Guo3Meixue Zhou4Meixue Zhou5Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaCollege of Agronomy, Shanxi Agricultural University, Taigu, ChinaLodging in wheat (Triticum aestivum L.) is a complicated phenomenon that is influenced by physiological, genetics, and external factors. It causes a great yield loss and reduces grain quality and mechanical harvesting efficiency. Lodging resistance is contributed by various traits, including increased stem strength. The aim of this study was to map quantitative trait loci (QTL) controlling stem strength-related features (the number of big vascular bundles, stem diameter, stem wall thickness) using a doubled haploid (DH) population derived from a cross between Baiqimai and Neixiang 5. Field experiments were conducted during 2020–2022, and glasshouse experiments were conducted during 2021–2022. Significant genetic variations were observed for all measured traits, and they were all highly heritable. Fifteen QTL for stem strength-related traits were identified on chromosomes 2D, 3A, 3B, 3D, 4B, 5A, 6B, 7A, and 7D, respectively, and 7 QTL for grain yield-related traits were identified on chromosomes 2B, 2D, 3D, 4B, 7A, and 7B, respectively. The superior allele of the major QTL for the number of big vascular bundle (VB) was independent of plant height (PH), making it possible to improve stem strength without a trade-off of PH, thus improving lodging resistance. VB also showed positive correlations with some of the yield components. The result will be useful for molecular marker-assisted selection (MAS) for high stem strength and high yield potential.https://www.frontiersin.org/articles/10.3389/fpls.2022.962253/fulllodginggenetic mapvascular bundle charactersplant heightyield contributing traits |
| spellingShingle | Yanan Niu Tianxiao Chen Chenchen Zhao Ce Guo Meixue Zhou Meixue Zhou Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) Frontiers in Plant Science lodging genetic map vascular bundle characters plant height yield contributing traits |
| title | Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) |
| title_full | Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) |
| title_fullStr | Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) |
| title_full_unstemmed | Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) |
| title_short | Identification of QTL for Stem Traits in Wheat (Triticum aestivum L.) |
| title_sort | identification of qtl for stem traits in wheat triticum aestivum l |
| topic | lodging genetic map vascular bundle characters plant height yield contributing traits |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.962253/full |
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