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Identification of QTL for stem traits in wheat (Triticum aestivum L.)


Niu, Y and Chen, T and Zhao, C and Guo, C and Zhou, M, Identification of QTL for stem traits in wheat (Triticum aestivum L.), Frontiers in Plant Science, 13 Article 962253. ISSN 1664-462X (2022) [Refereed Article]

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DOI: doi:10.3389/fpls.2022.962253


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 20202022, and glasshouse experiments were conducted during 20212022. 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.

Item Details

Item Type:Refereed Article
Keywords:wheat stem QTL, lodging, genetic map, vascular bundle characters, plant height, yield contributing traits
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Agrochemicals and biocides (incl. application)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Wheat
UTAS Author:Niu, Y (Mrs Yanan Niu)
UTAS Author:Chen, T (Mr Tianxiao Chen)
UTAS Author:Zhao, C (Dr Chenchen Zhao)
UTAS Author:Guo, C (Mr Ce Guo)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:151259
Year Published:2022
Deposited By:TIA - Research Institute
Deposited On:2022-07-26
Last Modified:2022-09-05

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