Ratio of compounds (mean ± SE) emitted by silicon-supplemented (+Si) and non-silicon supplemented (Si-) uninfested and aphid-infested wheat plants.

Relative amounts were estimated based on the peak area of the internal standard. Bold value indicates significant elevation in relative amount of a compound compared to the control treatment (-Si uninfested wheat plant) according to GLM.相对含量基于内标物的峰面积进行估算。依据一般线性模型（General Linear Model，GLM）的分析结果，相较于对照处理（不含硅且未受虫害的小麦植株），加粗数值对应的化合物相对含量存在显著升高。