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Wheat traits and the associated loci conferring radiation use efficiency

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Title Wheat traits and the associated loci conferring radiation use efficiency
 
Creator Li, Yibo
Fulu Tao
Yuanfeng Hao
Jingyang Tong
Yonggui Xiao
He Zhonghu
Reynolds, Matthew P.
 
Subject cultivation
efficiency
genes
physiology
plants
genetic gain
harvest index
radiation
triticum aestivum
wheat
yield potential
grain
breeding
photosynthesis
 
Description Wheat (Triticum aestivum L.) radiation use efficiency (RUE) must be raised through crop breeding to further increase the yield potential, as the harvest index is now close to its theoretical limit. Field experiments including 209 wheat cultivars which have been widely cultivated in China since the 1940s were conducted in two growing seasons (2018–2019 and 2019–2020) to evaluate the variations of phenological, physiological, plant architectural, and yield-related traits and their contributions to RUE and to identify limiting factors for wheat yield potential. The average annual genetic gain in grain yield was 0.60% (or 45.32 kg ha−1 year−1; R2 = 0.44, P < 0.01), mainly attributed to the gain in RUE (r = 0.85, P < 0.01). The net photosynthetic rates were positively and closely correlated with grain RUE and grain yield, suggesting source as a limiting factor to future yield gains. Thirty-four cultivars were identified, exhibiting not only high RUE, but also traits contributing to high RUE and 11 other critical traits – of known genetic basis – as potential parents for breeding to improve yield and RUE. Our findings reveal wheat traits and the associated loci conferring RUE, which are valuable for facilitating marker-assisted breeding to improve wheat RUE and yield potential.
 
Date 2022-10
2023-02-26T12:49:08Z
2023-02-26T12:49:08Z
 
Type Journal Article
 
Identifier Li, Y., Tao, F., Hao, Y., Tong, J., Xiao, Y., He, Z. and Reynolds, M. 2022. Wheat traits and the associated loci conferring radiation use efficiency. The Plant Journal 112(2):565–582.
1365-313X
https://hdl.handle.net/10568/129037
https://doi.org/10.1111/tpj.15954
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format p. 565-582
 
Publisher Wiley
 
Source Plant Journal