METHOD: Cold Acclimation CONDITIONS: Growth Chamber - 14h light at 20/18C and lowered to 4/2C for cold acclimation METHOD NARR: Leaflets were placed in a glycerol bath at zero degrees C for ion leakage tests. The temp of the gly gradually and leaflets were evaluated for injury at a variety of temperature points. Freezing injury was assessed by measuring ion leakage. The difference between nonacclimated (NA) and freezing tolerance afteracclimationn capacity (ACC). Parents (cmm & tbr) were evaluated in addition to their progeny. RESULTS NARR: The results reported focus on the segregation of traits (NA and ACC) seen in progeny of the parental cross. The authors discusetween freezing tolerance and agronomic traits. AUTHOR EXPLANATION: This study demonstrated that it is feasible to combine high levels of freezing tolerance from cmm with high tuber yield and specific gravity.