College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China. Dryland-Technology Key Laboratory of Shandong Province, Qingdao Agricultural, Qingdao, 266109, China. Administrative Committee of Yellow River Delta Agri-High-Tech Industry Demonstration Zone, Dongying, 257347, China. Shandong Institute of Pomology, Tai'an, 271000, China. Jinan Fruit Research Institute, All China Federation of Supply and Marketing Co-operatives, Jinan, 250000, China. Shandong Academy of Agricultural Sciences, Jinan, 250000, China. College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China. ming.wang@qau.edu.cn. Dryland-Technology Key Laboratory of Shandong Province, Qingdao Agricultural, Qingdao, 266109, China. ming.wang@qau.edu.cn.