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KMID : 0352719920160010037
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Journal of Ginseng Research
1992 Volume.16 No. 1 p.37 ~ p.43
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Structural Changes and Histochemical Study of Endosperm on panax ginseng C. A. Meyer during Embryo Development
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Abstract
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Structural changes of the endosperm of Panax ginseng C. A. Meyer from ferilization to germination were investigated by light microscope. The endosperm of the ginseng seed is cellular type. Since endosperm cells adjacent embryo continuously
breakdown and
disappear with the elongation of embryo. the real of endosperm is gradually decreased. As the anatropous ovules of immature seed with green seed coat developes more, and ovary cells adjacent ovary cavity become abundant by the periclinal
division,
their
size is decreased, hypotrophy of cell wall discern and they are gradually differentiated in seed coat. Though embryo responds strongly to basic dye at the stage of completion of endosperm formation, tissue of endosperm responds to acidic bye
positively.
Cell wall of embryo and endosperm are composed of primary cell wall not lignified. Endosperm cells adjacent embryo begin to breakdown in the endosperm tissue of indehiscent seed beginning of the after-ripening. Dehiscent seed of which seed coat
is
opened through after-ripening represent the form as a seedling in the result of embryo developments with formation of organs; radicle, cotyledon, plumule. Umbiliform layer represents layer that endosperm cells breakdown and disappear is observed
clearly
at the periphery of the embryo cotyledon, with shghtly at the periphery of the radicle.
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