UV-B Radiation Impacts Shoot Tissue Pigment Composition in Allium fistulosum L. Cultigens

Figure 1

HPLC chromatogram of Allium fistulosum L. leaf (a) and pseudostem (b) tissues at 453 nm. Retention times (min) for the pigments were (1) violaxanthin, 5.52 min; (2) neoxanthin, 5.81 min; (3) antheraxanthin, 7.59 min; (4) chlorophyll b, 8.51 min; (5) lutein, 9.33 min; (6) zeaxanthin, 11.31 min; (7) chlorophyll a, 13.90 min; (8) ethyl-β-8^′-apo-carotenoate (internal standard), 19.32 min; and (9) β-carotene, 48.46 min. HPLC conditions are described in the text.

(a)

(b)