The content of praline of Ficus carica Linn and Euphorbia pulcherrima were significantly higher than that of Codiaeum variegatum var. pictum and Ficous elastica.

• 无花果和一品红的脯氨酸含量显著高于变叶木和橡皮树，并且变叶木叶片脯氨酸含量显著高于橡皮树。