Post-Anthesis Heat Influences Grain Yield, Physical and Nutritional Quality in Wheat: A Review

Edward Fernie, Daniel K. Y. Tan, Sonia Y. Liu, Najeeb Ullah and Ali Khoddami
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Edward Fernie: Faculty of Science, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Plant Breeding Institute, The University of Sydney, Sydney, NSW 2006, Australia
Daniel K. Y. Tan: Faculty of Science, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Plant Breeding Institute, The University of Sydney, Sydney, NSW 2006, Australia
Sonia Y. Liu: Faculty of Science, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Plant Breeding Institute, The University of Sydney, Sydney, NSW 2006, Australia
Najeeb Ullah: Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia
Ali Khoddami: Faculty of Science, School of Life and Environmental Sciences, Sydney Institute of Agriculture, Plant Breeding Institute, The University of Sydney, Sydney, NSW 2006, Australia

Agriculture, 2022, vol. 12, issue 6, 1-24

Abstract: Climate change threatens to impact wheat productivity, quality and global food security. Maintaining crop productivity under abiotic stresses such as high temperature is therefore imperative to managing the nutritional needs of a growing global population. The article covers the current knowledge on the impact of post-anthesis heat on grain yield and quality of wheat crops. The objectives of the current article were to review (1) the effect of post-anthesis heat stress events (above 30.0 °C) on wheat grain yield, (2) the effect of heat stress on both the physical and chemical quality of wheat grain during grain development, (3) identify wheat cultivars that display resilience to heat stress and (4) address gaps within the literature and provide a direction for future research. Heat stress events at the post-anthesis stage impacted wheat grain yield mostly at the grain filling stage, whilst the effect on physical and chemical quality was varied. The overall effect of post-anthesis heat on wheat yield and quality was genotype-specific. Additionally, heat tolerance mechanisms were identified that may explain variations in yield and quality data obtained between studies.

Keywords: climate change; food security; nutrition; wheat; thermotolerance; abiotic stress (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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