Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (1): 57-61.DOI: 10.16178/j.issn.0528-9017.20230930

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Effects of TiO2 on the quality of pitaya

XU Weiwei1(), HAN Shaobo2, CHEN Jianghui1, SUN Wu3, CHEN Yueming3, CUI Yongyi4, LI Xiaobai5,*()   

  1. 1. Cixi Agricultural Technology Extension Center, Zhejiang Province, Cixi 315300, Zhejiang
    2. Cixi Agricultural Monitoring Center, Zhejiang Province, Cixi 315300, Zhejiang
    3. Ningbo Maitian Agricultural Development Co., Ltd., Ningbo 315303, Zhejiang
    4. Zhejiang A&F University, Hangzhou 311300, Zhejiang
    5. Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
  • Received:2023-09-17 Online:2026-01-11 Published:2026-01-19
  • Contact: LI Xiaobai

Abstract:

In recent years, facility cultivation of pitaya has developed rapidly in Zhejiang Province. However, protected cultivation in the winter and spring seasons in Zhejiang Province is still affected by unfavorable factors such as low temperature and weak light, which often leads to low photosynthetic rate and seriously affects the commercialization of pitaya and the economic benefits of farmers. In this study, the pitaya cultivar Hongshuijing was used as the research material, and three different concentration treatments of a novel photosynthesis promoter (TiO2) were set up along with a control group. When the fruits ripened, the external physical properties and quality properties of pitaya were determined. The results showed that dilution of 1 500 times treatment exhibited the best effect in improving the appearance and physical properties (single fruit weight, fruit longitudinal diameter, and fruit transverse diameter) of pitaya. Both the dilution of 1 500 times and 1 000 times treatments had good effects on improving the quality properties (vitamin C content, soluble sugar content, soluble solid-acid ratio, soluble solid content) of pitaya fruits. In general, TiO2 had significant effects on the quality of pitaya, among which the dilution of 1 500 times treatment showed the best effect. The results of this study will provide new theoretical and practical references for pitaya cultivation in Zhejiang Province.

Key words: TiO2, pitaya, photosynthesis promoter, quality

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