Nuclear magnetic resonance (NMR) spectroscopy combined with multivariate statistical analysis can provide tools to help detect differences in plant chemistry when grown under varying conditions. Hypericum perforatum, or Saint John's wort, plants are a suitable model to explore methods of discrimination between early stage plants grown in different conditions.

中文翻译：

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使用1 H-NMR光谱探索在不同光谱下生长的圣约翰草的特征选择。

核磁共振（NMR）光谱结合多元统计分析可以提供工具，以帮助检测在不同条件下生长时植物化学差异。贯叶连翘，或圣约翰草，是探索在不同条件下生长的早期植物之间区别方法的合适模型。