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Morphogenetic Aspects of the Development of Meristems in Seed Embryos

  • F. D’Amato
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 18)

Abstract

Evolution has favored the establishment, in Phanerogams, of a propagation and survival organ, the seed; this contains, in a resting state, the embryo, a young plant which resumes growth and differentiation at seed germination. The embryo shows a variety of developmental patterns and may attain, at seed maturity, different sizes and degrees of differentiations. The fully developed embryo commonly consists of an axis bearing one or more cotyledons and, at its opposite ends, the primordium of the root and the primordium of the shoot. The root and shoot primordia vary in degree of differentiation from simple apical meristems to embryonic organs: the embryonic root -or radicle-and the embryonic shoot -or plumule- with one or more leaf primordia. In the grass family, the highly differentiated embryos also bears the primordia of adventitious roots.

Keywords

Mitotic Index Chromosome Aberration Interphase Nucleus Root Meristem Leaf Primordia 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1972

Authors and Affiliations

  • F. D’Amato
    • 1
  1. 1.Institute of Genetics, The UniversityPisaItaly

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