油菜素甾醇对章姬草莓贮藏品质的影响

Effects of brassinosteroids on the storage quality of Zhangji strawberry

中文关键词:  油菜素甾醇  草莓  贮藏品质  维生素C

英文关键词:brassinosteroids  strawberry  storage quality  vitamin C

中文摘要:

      目的 探讨章姬草莓果实的贮藏特性与油菜素甾醇(brassinosteroids, BRs)的关系。方法 以章姬草莓为供试材料, 以蒸馏水为对照, 通过不同浓度的BRs溶液(5、10、15 μmol/L)喷洒草莓果实, 观察BRs对其失重率、腐烂情况等贮藏品质的影响。结果 经过BRs处理章姬草莓果实后质量损失明显降低, 腐烂速度减缓, 特别是在10 μmol/L浓度喷洒下章姬草莓果实失重率、可溶性固形物和维生素C (vitamin C, VC)含量的损失均显著低于对照组。在第6 d时, 10 μmol/L BRs处理组章姬草莓果实比对照组的VC含量高1.8倍, 硬度高19.2%; 腐烂率、腐烂指数、丙二醛含量的增加量均显著低于对照组(P<0.05); 对照组比10 μmol/L BRs处理组章姬草莓果实丙二醛含量高1.27倍, 腐烂率高13%, 腐烂指数高20%。结论 10 μmol/L BRs喷洒下对延长章姬草莓果实的贮藏时间具有较好的效果。

英文摘要:

      Objective To explore the relationship between the storage quality of Zhangji strawberry fruit and brassinosteroids (BRs). Methods With Zhangji strawberry as the test material and distilled water as the control, through different concentrations of BRs solutions (5, 10, 15 μmol/L), the effects of BRs on the weight loss rate and decay, etc of strawberry fruits were observed. Results The quality loss of Zhangji strawberry fruits could be reduced obviously, and the decay rate of Zhangji strawberry fruits slowed down after BRs treatment. In particular, the weight loss rate, and the loss of soluble solids and vitamin C (VC) content in the 10 μmol/L BRs treatment group were significantly lower than those in the control group. On the 6th day, the VC content and hardness of Zhangji strawberry fruit in 10 μmol/L BRs treatment group were 1.8 times and 19.2% higher than those in the control group; the increase of decay rate, decay index and malondialdehyde content in the treatment group were significantly lower than those in the control group (P<0.05); the control group was 1.27 times higher than the malondialdehyde content of Zhangji strawberry fruit in 10 μmol/L BRs treatment group, the decay rate was 13% higher and the decay index was 20% higher. Conclusion Spraying with 10 μmol/L BRs has a good effect on prolonging the storage time of Zhangji strawberry fruit.