Figure 2.
Profiles of the 200 and 004 reflection intensities and d004 lattice spacing along a sequence of normal wood development with the corresponding sample anatomy. A, Intensity in log scale of the 200 diffraction for five ranges of azimuth angle: a, 40° to 52°; b, 28° to 40°; c, 16° to 28°; d, 4° to 16°; e, 0° to 4°. A1 to A4 illustrate full 200 diffraction patterns at different distances from the cambium (140, 330, 410, and 630 μm, respectively). B, Intensity in log scale of the 004 diffraction. C, Lattice spacing (d004). B and C are given with distinctions between the contributions of microfibrils oriented at large angles (greater than 16°; red circles) and small angles (less than 16°; green squares). D, Cross-section of a portion of the tissue traversed by the beam from periphloem fibers to mature wood. D1 to D5 show details of fibers along the development sequence. [See online article for color version of this figure.]