Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (7): 1413-1420.DOI: 10.3969/j.issn.1000-2561.2019.07.024

• Agricultural Product Processing, Preservation, Storage, Analysis and Detection • Previous Articles     Next Articles

Effect of Melatonin Treatment on the Preservation of the Flower Stalk of Brassica campestris L. ssp. chinesis var. utilis Tsen et Lee after Harvest Under Low Temperature

JIA Zhiwei,SUN Manli,CHANG Jinmei,SONG Kanghua,ZHANG Lubin()   

  1. South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products / Key Laboratory of Tropical Fruit Biology, Ministry of Agriculture and Rural Affairs, Zhanjiang, Guangdong 524091, China
  • Received:2018-10-09 Revised:2019-02-20 Online:2019-07-25 Published:2019-08-01
  • Contact: ZHANG Lubin


In order to extend the shelf-life and maintain the postharvest quality of flowering Chinese cabbage (FCC)(Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee) under low temperature, the flower stalks harvested of FCC were treated with 50, 100 mg/L melatonin respectively, stored at 4 ℃, then the appearance quality was observed, physiological and biochemical indexes related to stored quality were evaluated during storage. The degradation of chlorophyll of the leaves was delayed by melatonin treatment. Much higher levels of soluble sugar and soluble protein content were maintained than the control. Activities of superoxide dismutase and peroxidase were improved under at storage temperature 4 ℃. Meanwhile the content of lignin of the stalk and the expression of cinnamyl alcohol dehydrogenase gene BcCAD4 and BcCAD5 related to lignin synthesis was suppressed by the melatonin treatment. It indicated that the effect of melatonin treatment may be related to the inhibition of the expression of cinnamol dehydrogenase genes.

Key words: flowering Chinese cabbage (Brassica campestris L. ssp. chinesis var. utilis Tsen et Lee), melatonin, preservation effect

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