Replication data for: Biochemical changes after cold acclimation in Nordic red clover (Trifolium pratense L.) accessions with contrasting levels of freezing tolerance

The data deposited here correspond to the content of analyzed metabolites (carbohydrates, amino acids and phenolic compounds) in red clover crowns before and after cold acclimation treatment. Carbohydrates and amino acids content was determined through high performance liquid chromatography (HPLC), while phenolic compounds content was determined through liquid chromatography and high-resolution mass spectrometry (HMRS).