Abstract
Distribution of insoluble polysaccharides has been studied in various parts of the seed, in Linum usitatissimum Linn., during embryogenesis and germination. PAS-positive grains are localized in the endothelial cells at about octant proembryo stage. In endosperm, concentration of polysaccharides increases during embryogeny. The egg and the zygote show perinuclear arrangement of starch grains. In globular proembryo, large number of polysaccharide grains are localized in the hypophysis. In a dry seed, no PAS-positive grains are observed in either the cells of endosperm or the embryo. Starch begins to accumulate after germination.
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