Distribution of calcium in bagged apple fruit and relationship between antioxidant enzyme activity and bitter pit | 套袋苹果果实中钙素分布及抗氧化酶活性与苦痘病关系的研究
2010
Wang Xiaoyan, Qingdao Agriculture University, Qingdao (China), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering | Hang Bo, Qingdao Agriculture University, Qingdao (China), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering | Liu Chenglian, Qingdao Agriculture University, Qingdao (China), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering
[Objective] The aim was to study the distribution of Ca in bagged apple fruit and the relationship between antioxidant enzyme activity and bitter pit disease, which will provide a basis for resolving Ca metabolism disorder in apple cultivation. [Method] With Fuji Apple as the tested material, the changes of Ca2+ content and antioxidant enzyme activity in different parts of apple fruit after picking bags and storage period were determined. [Result] The results showed that Ca contents in the light surface of fruits were higher than that in the backlight surface. The Ca contents of stalk cavity were higher than that of calyx-end. The activities of SOD, POD, CAT and APX in the light surface of fruits were higher than that in the backlight surface. The activities of SOD, POD, CAT and APX of stalk cavity were higher than that of calyx-end. The contents of MDA in the light surface of fruits were lower than that in the backlight surface. The contents of MDA of stalk cavity were lower than that of calyx-end. [Conclusion] The incidence rate of bitter pit in the light surface of fruits were lower than that in the backlight surface, and the incidence rate of bitter pit of stalk cavity were lower than that of calyx-end.
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