The Physiological Basis of the Genetic Progress in Yield Potential of CIMMYT Spring Wheat Cultivars from 1966 to 2009

Our objective was to investigate the physiological basis of genetic progress in grain yield in CIMMYT spring wheat ( Triticum aestivum L.) cultivars developed from 1966 to 2009 in irrigated, high‐potential conditions. Field experiments were conducted during three growing seasons in northwest Mexico (2008–2009, 2009–2010, and 2010–2011) examining 12 historic CIMMYT semidwarf spring wheat cultivars released from 1966 to 2009. The linear rate of...