This study investigated the variation of metabolite profiles of onion bulbs (Allium cepa L.) depending on genetic and environmental factors. Nine onion cultivars (“Corrado”, “Cupido”, “Forum”, “Hytech”, “Picador”, “Redlight”, “Snowpack”, “Stardust”, “Sturon”) with different scale color and dry matter content were grown in a two-year field trial. Using a recently established metabolite profiling approach based on liquid chromatography-coupled electrospray ionization quadrupole time-of-flight mass spectrometry, 106 polar and semipolar metabolites which belong to compound classes determining nutritional, sensory, and technological quality of onion bulbs such as saccharides, flavonoids, S-substitued cysteine conjugates, amino acids, and derived γ-glutamyl peptides were relatively quantitated in parallel. Statistical analyses of the obtained data indicated that depending on the compound class genetic and environmental factors differently contributed to variation of metabolite levels. For saccharides and flavonoids the genetic factor was the major source of variation, whereas for cysteine sulfoxides, amino acids, and peptides both genetic and environmental factors had a significant impact on corresponding metabolite levels.

中文翻译：

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品种和栽培年度对洋葱鳞茎的代谢图谱的影响（洋葱L.）

这项研究调查了洋葱鳞茎（葱属）的代谢产物谱的变化L.）取决于遗传和环境因素。种植了九种具有不同鳞片颜色和干物质含量的洋葱品种（“ Corrado”，“ Cupido”，“ Forum”，“ Hytech”，“ Picador”，“ Redlight”，“ Snowpack”，“ Stardust”，“ Sturon”）。在为期两年的现场试验中。使用最近建立的基于液相色谱耦合电喷雾电离四极杆飞行时间质谱的代谢物谱分析方法，可确定106种极性和半极性代谢物，这些化合物可确定洋葱鳞茎的营养，感官和技术质量，例如糖类，类黄酮，S取代的半胱氨酸结合物，氨基酸和衍生的γ-谷氨酰胺肽平行进行了相对定量。对获得的数据进行统计分析表明，取决于化合物类别，遗传和环境因素对代谢物水平的变化有不同的贡献。对于糖和类黄酮，遗传因素是变异的主要来源，而对于半胱氨酸亚砜，氨基酸和肽，遗传因素和环境因素均对相应的代谢产物水平产生重大影响。