Phytotoxicity of Natural Molecules Derived from Cereal Crops as a Means to Increase Yield Productivity

Figure 2

Chemical structures of some common compounds leading to allelopathic effects such as (a) ferulic acid; (b) (p)-coumaric acid; (c) (p)-hydroxybenzoic acid; (d) vanillic acid; (e) gallic acid; (f) chlorogenic acid; (g) scopoletin; (h) umbelliferone; (i) myricetin; (j) catechin; and (k) quercetin.