Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (2): 197-205.DOI: 10.3969/j.issn.1004-1524.20240946

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Effects of exogenous spraying of folic acid on the folic acid content and quality of rice

ZHANG Yue1(), WANG Jingran1, ZHOU Qiang1,2, CHEN Meiling1, WANG Yanhong1,2,*()   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
    2. Key Laboratory of Food Safety Testing and Control Technology of Shenyang, Shenyang 110016, China
  • Received:2024-11-07 Online:2026-02-25 Published:2026-03-24

Abstract:

In this experiment, Yanjing 48 was used as the test rice material. The effects of exogenous folic acid spraying on the nutritional quality and growth and development of rice were explored by exogenous spraying of calcium 5-formyltetrahydrofolate and calcium 5-methyltetrahydrofolate at different growth stages: jointing, heading, and filling. The results showed that when the application rate of folic acid was 225 g·hm-2, the contents of 5-FTHF, 5-MTHF and total folic acid in rice were the highest, increased by 66.80%, 52.43% and 13.20%, respectively. Meanwhile, at different growth stages of rice, compared with single-period spraying, the folic acid content of rice significantly increased after multi-period spraying. Additionally, folic acid application led to a reduction in amylose content by 0.24-1.49 percentage points, while improving taste value by 4.44%-6.85%, increasing plant height by 2.99%-5.91%, and increasing yield by 2.95%-7.94%. These findings indicated that the application of exogenous folic acid not only increased folic acid accumulation in rice grains but also positively affected eating quality and agronomic traits during the development of rice.

Key words: rice, exogenous application, folic acid, taste value, plant height, yield, quality

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