Envirotyping facilitates understanding of genotype × environment interactions and highlights the potential of stay-green traits in wheat
Article
Article Title | Envirotyping facilitates understanding of genotype × environment interactions and highlights the potential of stay-green traits in wheat |
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ERA Journal ID | 5309 |
Article Category | Article |
Authors | Amin, A., Christopher, Jack, Cooper, Mark, Collins, Brian, Voss-Fels, Kai, Hickey, Lee and Chenu, Karine |
Journal Title | Field Crops Research |
Journal Citation | 331 |
Article Number | 109940 |
Number of Pages | 16 |
Year | 2025 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0378-4290 |
1872-6852 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.fcr.2025.109940 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0378429025002059 |
Abstract | Better understanding genotype by environment interaction (G×E) can help breeding for better adapted varieties. Envirotyping for environmental water status was applied to assist interpretation of G×E interactions for wheat yield in multi-environment trials conducted in drought-prone Australian environments. Genotypes from a multi-reference parent nested association mapping (MR-NAM) population were tested in 10 trials across the Australian wheatbelt. Genotype yield and phenology were measured in all trials, while traits associated with the stay-green phenotype were assessed for a subset of 5 trials. Envirotyping was conducted by characterizing water stress experienced by genotypes at each trial using crop modelling. Envirotyping facilitated the understanding of G×E interactions by explaining 75, 67, and 66 % of the genotypic variance for yield in severe water-limited (ET3), mild terminal water-stress (ET2), and water-sufficient (ET1) environments, respectively. Yield and stay-green were negatively correlated with flowering time in most trials. However, when focusing on genotypes flowering at similar times within a trial, no significant correlation was found between yield and flowering. Importantly stay-green traits remained significantly correlated with yield. Stay-green traits such as delayed onset of senescence and slower senescence rate benefited yield by 0.2–1.1 t ha−1 across environments, highlighting the breeding potential for stay-green traits in both water-sufficient and water-limited environments. Hence, sustaining green leaf area during grain filling helped to enhance yield. Envirotyping to better understand G×E interactions for yield, coupled with screening for traits exhibiting superior adaptive mechanisms, are powerful assets in assisting plant breeders to select more effectively drought adapted genotypes. |
Keywords | Genotype by environment interaction; Envirotyping; Yield; Drought; Stay-green; NDVI; APSIM |
Article Publishing Charge (APC) Funding | Project Funding |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300205. Agricultural production systems simulation |
300406. Crop and pasture improvement (incl. selection and breeding) | |
300406. Crop and pasture improvement (incl. selection and breeding) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Centre for Sustainable Agricultural Systems | |
Hochschule Geisenheim University, Germany |
https://research.usq.edu.au/item/zy2x4/envirotyping-facilitates-understanding-of-genotype-environment-interactions-and-highlights-the-potential-of-stay-green-traits-in-wheat
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