外源喷施叶酸对稻米叶酸含量及品质的影响OA

In this experiment,Yanjing 48 was used as the test rice material.The effects of exogenous folic acid spra-ying 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 fill-ing.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 sig-nificantly increased after multi-period spraying.Additionally,folic acid application led to a reduction in amylose con-tent 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 exoge-nous 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.