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

doi:10.3969/j.issn.1004-1524.20240946

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

• Crop Science • Previous Articles Next Articles

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. 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

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

CLC Number:

S511.6

ZHANG Yue, WANG Jingran, ZHOU Qiang, CHEN Meiling, WANG Yanhong. Effects of exogenous spraying of folic acid on the folic acid content and quality of rice[J]. Acta Agriculturae Zhejiangensis, 2026, 38(2): 197-205.

Figures/Tables 5

Fig.1 Variation in rice folic acid content with varying folic acid application rates The absence of identical letters on the line indicates significant (p<0.05) differences between different treatments. The same as Fig. 4 and Fig. 5.

Fig.2 Folic acid content in rice applied with different varieties of folic acid The absence of identical letters on the column indicates significant (p<0.05) differences between different treatments. The same as Fig. 3.

Fig.3 Total folic acid content in rice after folic acid spraying at different periods

Fig.4 Taste value and amylose content of rice applied with folic acid at different periods

Fig.5 Plant height and yield of rice applied with folic acid in different periods

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

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