A decreasing trend with age was observed in T . baccata , while a non-significant trend was observed in A . alba and P . abies for the ratio of Car / Chl tot (Fig. 5 c).
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Adaptive significance of age- and light-related variation in needle structure, photochemistry, and pigments in evergreen coniferous trees.
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baccata , which did not show a significant trend of NPQ , likely due to the lower number of needle cohorts compared to the other study species (Fig. 2 c).