Climate Change Threatens Wheat Productivity and Global Food Security

Strategic Insights -

Climate change poses a significant threat to wheat productivity, quality, and global food security. According to a recent study, high temperatures during the grain filling stage can negatively impact wheat yield and quality. The research, conducted by the University of Sydney, aimed to review the current knowledge on the impact of post-anthesis heat on grain yield and quality of wheat crops. The study identified heat tolerance mechanisms that may explain variations in yield and quality data obtained between studies.

Key Takeaways:

  • Post-anthesis heat stress events at temperatures above 30.0 °C can significantly impact wheat grain yield, mostly at the grain filling stage.
  • The effect of heat stress on the physical and chemical quality of wheat grain during grain development is varied and depends on the genotype.
  • Heat tolerance mechanisms were identified that may explain variations in yield and quality data obtained between studies.
  • The study suggests that maintaining crop productivity under abiotic stresses such as high temperature is crucial for managing the nutritional needs of a growing global population.
  • The research highlights the importance of identifying wheat cultivars that display resilience to heat stress to improve wheat productivity and quality.
  • The study aims to address gaps within the literature and provide a direction for future research on the impact of heat stress on wheat crops.

Statistics:

  • The study states that post-anthesis heat stress events at temperatures above 30.0 °C can impact wheat grain yield mostly at the grain filling stage.
  • The research was conducted by the University of Sydney and involved a team of researchers led by Edward Fernie.
  • The study involved a review of existing literature on the impact of post-anthesis heat on grain yield and quality of wheat crops.
  • The research aimed to identify wheat cultivars that display resilience to heat stress and provide a direction for future research.

Sources:

  • Post-Anthesis Heat Influences Grain Yield, Physical and Nutritional Quality in Wheat: A Review. Agriculture, 2022,12(886):886. (Agriculture - http://www.mdpi.com/journal/agriculture)
  • University of Sydney Researchers Update Knowledge of Agriculture (Post-Anthesis Heat Influences Grain Yield, Physical and Nutritional Quality in Wheat: A Review). Agriculture Week. July 14, 2022; p 649.