1. USDA‐ARS and Dep. of AgronomyKansas State Univ. (KSU)4011 Throckmorton HallManhattanKS66506
2. USDA‐ARS R.W. Holley CenterCornell Univ.IthacaNY14853
3. Dep. of Plant Breeding and GeneticsCornell Univ.240 Emerson HallIthacaNY14853
4. Dep. of AgronomyKansas State Univ.4008 Throckmorton HallManhattanKS66506
5. International Maize and Wheat Improvement Center (CIMMYT)Int. Apdo. Postal 6‐64106600MexicoDFMexico