Additional file 3: Figure S2. of Natural variation in expression of genes associated with carotenoid biosynthesis and accumulation in cassava (Manihot esculenta Crantz) storage root

HPLC_DAD reference profile for color carotenoids. Absorption spectra extracted at 485 nm wavelength reads (Panel A) used for identification and quantification of carotenoids types across 23 landraces studies. Carotenoid absorption spectrum for intense yellow root from landrace Cas64 representing the reference for carotenoid intermediates used to construct the biosynthesis pathway. Panel B refers to absorption spectrum for purified standard lycopene from tomato. Panel C refers to absorption spectrum for purified standard β- carotene from carrot. Peaks numbers refers to 1 = Neoxanthin, 2 = Violaxanthin, 3 = Zeaxanthin, 4 = Crocetin, 5 = Lutein, 6 = Antheroxanthin, 7 = Lycopene, 8 = β-cryptoxanthin, 9 = α-Zeacarotene, 10 = Neurosporene, 11 = ζ carotene, 12 = ε-zeacarotene, 13 = All trans β-carotene/Phytofluen1, 14 = 13-cis-β-carotene/Phytofluen 2, 15 = 9-cis-β-carotene/Phytofluen 2. 16 = Phytoene. (TIF 54219 kb