Dr. Hong-Bin Zhang, Dr. Mi-Kyung Lee, Mrs. Chantel Scheuring, Ms. Ying Rong, Mr. Mark Goebel, Ms. Yen-Hsuan Wu, Dr. Liangtao Zhang, Dr. David M. Stelly, and Dr. C. Wayne Smith. Texas A&M University, Department of Soil and Crop Sciences, College Station, TX 77843