Glucosinolate composition of broccoli (Brassica oleracea var. italica) grown under various boron treatments at three Ontario sites

The relative glucosinolate composition of the florets from field-grown broccoli, determined using high-performance liquid chromatography and liquid chromatography–mass spectrometry, varied slightly with growing site and B fertilization, but was cultivar-dependent. Differences among growing sites, in total glucosinolate concentration, were greater than differences between the two cultivars used in the study. Key words: Brassica, broccoli, glucosinolate, nutrition