Figure 3.2 Scanning electron micrograph of the crease region of a caryopsis of barley cv. Blenheim grown in controlled environment conditions. The caryopsis was harvested at 24 days after anthesis, frozen in liquid nitrogen, cryo-trimmed to mid-grain in a plane perpendicular to the long axis of the grain, and freeze dried. The material visible in the endosperm cavity is probably composed largely of fructan. Abbreviations: c, chalazal region; np, nucellar projection; ec, endosperm cavity; pe, pericarp; se, starchy endosperm. Magnification X 90.