1. Univ. Autónoma Agraria Antonio Narro; Buenavista, Saltillo Coahuila Mexico
2. USDA-ARS, 314 Biochemistry Hall; Univ. of Nebraska; P.O. Box 8307377 Lincoln NE 68583-0737
3. The reported research is from a dissertation submitted by the senior author in partial fulfillment of the requirements for a Ph.D. degree at the University of Nebraska. The research was funded in part by the USDOE's Bioenergy Feedstock Development Program at Oak Ridge National Laboratory, USDA-ARS, and the University of Nebraska