1. Plant Genomics and Biotechnology Lab, Department of Biological Sciences, Fayetteville State University, Fayetteville, NC 28301, USA.
2. Department of Plant, Soil and Agricultural Systems, Southern Illinois University, Carbondale, IL 62901, USA.
3. Crop Genetics Research Unit, United States Department of Agriculture — Agricultural Research Service, 141 Experiment Station Road, P.O. Box 345, Stoneville, MS 38776, USA.