1. Dep. of Plant and Environmental Sciences New Mexico State Univ. Las Cruces NM 88003 USA
2. Cotton Fiber Bioscience Research Unit USDA‐ARS Southern Regional Research Center 1100 Robert E. Lee Blvd New Orleans LA 70124‐4305 USA
3. Dep. of Soil and Crop Sciences Texas A&M AgriLife Research 1102 East FM 1294 Lubbock TX 79403‐6603 USA