Abstract:Buckwheat (Fagopyrum esculentum Moench) seedlings in Hoagland solution were fed with different substances, and oxalate contents in the roots and leaves were determined after 36 hours. The results showed that ascorbate and its precursors as well as isocitrate decreased to some extent the oxalate content in roots and leaves, whereas glycolate and glyoxylate significantly increased oxalate content, suggesting that oxalate in the leaves was synthesized mainly from glycolate pathway. Oxalate content in leaves of