Stalk length should be considered for storage quality of broccoli heads based on the investigation of endogenous hormones metabolism
2020
Chen, Yong | Song, Xinhua | Guo, Yanyin | Zhang, Yuxiao | Li, Ling | Wang, Liang | Yun, Liping | Liu, Shasha | Zhang, Xinhua | Ma, Yangli
Endogenous hormones play significant roles in the storage quality of horticultural products. In the present study, the influence of diverse stalk lengths on hormones and storage quality of broccoli heads was investigated. Broccoli heads accompanied with stalk lengths (1, 3, 6, and 9 cm) were selected and stored at 10 °C and 85–90 % relative humidity. The results showed that the metabolism center was transferred from broccoli florets to stalk in broccoli heads with 9-cm stalks after 6 days. Compared to other treatments, the florets of broccoli heads with 6-cm stalks maintained the metabolism center via regulation of the consumption and distribution of endogenous hormones throughout the storage time, suppressing the reduction of water and protein content and hue angle H. Shorter stalk lengths accelerated the broccoli floret’s degradation during storage. The present results suggest that stalk/stem length should be considered for horticultural products during storage, especially for products with long stalk/stem.
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