1. College of Horticulture Pear Engineering & Technology Research Center of Hebei Province Hebei Agricultural University No. 2596 Lekai Street Baoding Hebei 07100 China
2. Department of Horticulture Mid‐Columbia Agricultural Research and Extension Center Oregon State University 3005 Experiment Station Drive Hood River OR 97031 USA
3. College of Food Science Shanxi Normal University No. 1 Gongyuan Street Linfen Shanxi 041004 China