ethylene production in ‘Gaixian’ plums was almost completely sup-pressed by the post-storage 1-MCP treatment (Fig. 6A).Unlike ‘Gaixian’, a delayed but sharp increase of ethylene pro-duction was observed in the control ‘Yuhuang’ plums during shelflife, as it increased gradually from 4.30 L kg−1h−1upon removal toits maximum of 66.42 L kg−1h−1after 4 days of shelf life (Fig. 6B).Such sharp ethylene biosynthesis progress of ‘Yuhuang’ was notsubstantially influenced by the ethylene treatment but was dramat-ically slowed by the post-storage 1-MCP treatment, since ethyleneproduction of ‘Yuhuang’ treated with 1-MCP only reached its max-imum of 39.88 L kg−1h−1after 5 days of shelf life (Fig. 6B).On the contrary, an early and sharp increase of ethylene pro-duction was found in the control fruit of ‘Aozhou 14’ after 1 dayat 25◦C, reaching its maximum of 72.5 L kg−1h−1after 3 days ofshelf life, which was further increased up to 89.2 L kg−1h−1by thepost-storage ethylene treatment (Fig. 6C). Interestingly, like ‘Gaix-ian’, ethylene production of ‘Aozhou 14’ was almost completely