Figure 6.

Representative high-performance liquid chromatography (HPLC) chromatograms recorded at 210 nm of rutin extracts from control plants (a) and plants stressed by nitrogen deficiency, high light, and cold (b) on day 16 extract revealed the induction of additional compounds besides rutin in extracts of tomato leaves. Blue, green, pink, and orange lines indicate chromatograms from four tomato plants.