Genetic Gains for Grain Yield in CIMMYT's Semi‐Arid Wheat Yield Trials Grown in Suboptimal Environments

Wheat ( Triticum aestivum L.) is a major staple food crop grown worldwide on >220 million ha. Climate change is regarded to have severe effect on wheat yields, and unpredictable drought stress is one of the most important factors. Breeding can significantly contribute to the mitigation of climate change effects on production by developing drought‐tolerant wheat germplasm. The objective of our study was to determine the annual genetic gain for...