关键词: 苹果, 果实, 外源钙, 乙烯

Abstract: Slices of ‘Fuji’apple fruit which was stored at 0 - 4 ℃ for 1 month were treated with different concentrations of CaCl2 to evaluate the influence of exogenous Ca²⁺ on changes of their ethylene productions. The results showed that Ca²⁺ enhanced the ethylene production when CaCl₂ concentrations were lower than 350 mmol·L^-1, while it inhibited the ethylene production when Ca²⁺ concentration was higher than 350 mmol·L^-1. During 0 - 12 h period of treatment , lower level of Ca²⁺ (80 mmol·L^-1) produced more ethylene continuously , while the higher level of Ca²⁺ (500 mmol·L^-1) inhibited ethylene production steadily. Not only low concentration of Ca²⁺ is a factor of cation to stimulate ethylene production , but Mg²⁺ and Mn²⁺ also showed the similar effect as Ca²⁺ did. La³⁺ (the inhibitor of Ca²⁺) and trifluoperazine (the inhibitor of CaM) inhibited ethylene production in the presence of low Ca²⁺(80 mmol·L^-1) treatment .

Key words: Apple, Fruit, Exogenous calcium, Ethylene