Abstract:To investigate the effects of isopropyl N-（3-chlorophenyl）carbamate（CIPC）treatment on sprouting and quality preservation of potato tubers during sub-ambient temperature storage at 12℃，the Favorita potato cultivar was chosen as the test material，and changes in germination and nutritional quality of potato tubers sprayed with 0.3 g/kg of CIPC and its dynamic residue were evaluated after storage at 12℃for 150 d.Unsprayed tubers stored for the same period at 4℃and 12℃were assessed as controls.The results indicated that 12℃+0.3 g/kg CIPC treatment ameliorated the speed of starch conversion to reducing sugar while maintaining soluble protein content in potato tubers better than the control group at 4℃.CIPC treatment at 12℃also significantly inhibited tuber respiratory intensity，reduced sprouting and weight loss，and preserved tuber nutritional quality better than the unsprayed group stored at 12℃.CIPC residual contents in potato peels and tuber flesh were lower than the residue limit standard（30 mg/kg）after short-term storage for 30 d.In summary，0.3 g/kg CIPC treatment can be used as a high-efficiency，sprout suppressant for long-term storage of potato tubers at the sub-ambient temperature of 12℃.