Abstract
The experiments were carried out to obtain some fundamental information on the fall of embryo from rice kernel in process of cleaning. The results of experiments are as follows; 1) The embryo is detached from kernel at the chalky starch-cell layer that is the outermost layer of endosperm starch-cells and adjacent to epithelium of embryo with the thin layer of flattened cells of endosperm between them. 2) The embryos fall off more easily from kernels in early cultivation than in late cultivation by the following reasons. 3) The chalky starch-cell layer is thicker in early cultivation than in late cultivation owing to the tendency of prematurity in early cultivation. 4) The embryo is larger and juts out more extent from the surface of kernel in early cultivation than in late cultivation on account of the vigorous growth of embryo and the prematurity of endosperm in early cultivation.
