Identifying High‐Yielding and Stable Maize Hybrids for the Highlands of Mexico

For Mexico to achieve self-sufficiency in maize production grain yield (GY) should increase to ~4.5 Mg ha−1 after 2017. Approximately 3.0 million ha, or 20% of the overall area under maize, are in the highlands (1,800–3,000 m above mean sea level) of central Mexico. Of this, approximately 750,000 ha are under drip irrigation and optimal conditions, producing high grain yields. However, the average regional yield is less than 4.0 Mg ha−1.