The Transcriptomics of Secondary Growth and Wood Formation in Conifers
Figure 2
Two histological cuts of mature wood from P. pinaster (with different magnifications) showing its simple anatomical structure, mainly composed of longitudinal and parallel tracheids, interspersed by few medullar rays (purple arrows) ((a), (b)). The resin ducts (black arrows) are associated with late wood (b). In both images, the distinction between early wood (large diameter cells) and late wood (small diameter cells with thick cell walls) is clear.
