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MORPHOLOGICAL AND EMBRYOLOGICAL STUDIES ON THE LEMNACEAE. II. THE ENDOSPERM AND EMBRYO OF LEMNA PAUCICOSTATA
Author(s) -
Maheshwari Satish C.,
Kapil R. N.
Publication year - 1963
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1963.tb06570.x
Subject(s) - endosperm , biology , botany , embryo , lemna , radicle , microbiology and biotechnology , germination
Maheshwari, Satish C., and R. N. Kapil. (U. Delhi, Delhi, India.) Morphological and embryological studies on the Lemnaceae. II. The endosperm and embryo of Lemna paucicostata. Amer. Jour. Bot. 50(9): 907–914. Illus. 1963.—The first division of the primary endosperm nucleus is followed by wall formation. The second division is also transverse so that a longitudinal row of 4 cells is formed. The next 2 divisions are vertical and result in a 16‐celled endosperm arranged in 4 tiers of 4 cells each. The development is, therefore, Cellular (even in L. minor) from the beginning and not Helobial, as reported earlier. The embryogeny conforms to the Asterad type. The radicle is absent in the mature embryo. Comparative studies of the structure of the endosperm and embryo furnish strong evidence in favor of a relationship of the Lemnaceae with the Araceae rather than with the Helobiales.