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. 2021 Aug 2;22(15):8303. doi: 10.3390/ijms22158303

Figure 3.

Figure 3

Daily variations in the content of individual carotenoids (mmol mol−1Chltot) in spring ((a,c,e)—left) and summer ((b,d,f)—right) leaves of P. latifolia. (a,b) Content of ß-carotene and lutein; (c,d) ratio of violaxanthin cycle pigments (VAZ) relative to total chlorophyll concentration (VAZ Chltot−1) and the de-epoxidation state of VAZ (DES = ((0.5A + V) (VAZ) −1). (e,f) Content of violaxanthin cycle pigments (violaxanthin, anteraxanthin and zeaxanthin). Leaves were sampled at 08:00–09:00 (8 h in the graphs), 12:00–13:00 (12 h), 14:30–15:30 (15 h) and 17:30–18:30 (18 h) hours ontwo dates in spring (11–12 and 25–26 May) and summer (4–5 and 22–23 July) on clear days. Data are reported as means ± SD (n = 6).