1. Dep. of Agronomy, Horticulture and Plant Science South Dakota State Univ. Brookings SD 57007 USA
2. Agricultural Science Center New Mexico State Univ. Clovis NM 88101 USA
3. USDA‐ARS Crop Production System Research Stoneville MS 38776 USA
4. Computational Biology & Biophysics Sandia National Laboratories Livermore CA 94550 USA