Figure 3
From: Comparison of metaxylem vessels and pits in four sympodial bamboo species
The ESEM micrographs of perforation plates of different species. (a,b) Transverse sections of simple and scalariform perforation plates (B. intermedia). (c–g) Longitudinal sections of simple and scalariform perforation plates in N. affinis. (e–g) Details of scalariform perforation plates show that the apertures appeared in two shapes: elongated and elliptical. (h–k) Longitudinal sections of simple and reticulate perforation plates in B. intermedia. (i–k) Details of scalariform perforation plates with sparse and narrow apertures. (j) An arrowhead indicates the incomplete bars due to sample preparation. (l–n) Longitudinal sections of simple and scalariform perforation plates in B. multiplex. (m) The angle was almost vertical and the scalariform perforation plates connected two vessel elements. An arrowhead indicates the scalariform perforation plates in one of the vessel element; an asterisk indicates the inner vessel wall in the other vessel element. (o–q) Longitudinal sections of simple and scalariform perforation plates in B. rigida. (p) The complicated scalariform perforation plates linked three vessel elements; the white arrowhead and asterisk indicate the scalariform perforation plates in two of the vessel element, respecively; an orange arrowhead indicates the inner vessel wall in the other vessel element. Bars = 50 μm (a), 50 μm (b), 20 μm (c), 50 μm (d), 10 μm (e), 100 μm (f), 20 μm (g), 20 μm (h), 100 μm (i), 20 μm (j), 20 μm (k), 50 μm (l), 20 μm (m), 20 μm (n), 20 μm (o), 50 μm (p), 50 μm (q).
