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GROWTH AND SEXUAL REPRODUCTION OF THE MOSS AMBLYSTEGIUM RIPARIUM UNDER STERILE CONDITIONS
Author(s) -
Belkengren R. O.
Publication year - 1962
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.1537-2197.1962.tb14982.x
Subject(s) - sporophyte , protonema , leafy , biology , sexual reproduction , moss , gametophyte , botany , polyembryony , shoot , bryopsida , reproduction , embryo , ecology , microbiology and biotechnology , pollen
Belkengren, R. O. (Oregon State U., Corvallis.) Growth and sexual reproduction of the moss Amblystegium riparium under sterile conditions. Amer. Jour. Bot. 49(6): 567–571. Illus. 1962.—Growth of Amblystegium riparium as primary or secondary protonemata, or as a leafy gametophyte under aseptic conditions, is reported. Yeast extract appears to be inhibitory for shoot growth but not for protonemal growth; it appears to cause the death of shoot buds on protonemata before they differentiate into leafy shoots, so that the organism grows as protonema only. Sexual reproduction of this organism in continuously illuminated cultures was induced by a CO 2 ‐free period followed by addition of CO 2 or sugar. Senescence in a culture may also induce sporophyte formation presumably by interfering with photosynthesis or some other function.