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A STUDY OF WALL ORNAMENTATION IN CULTURES OF SCENEDESMUS
Author(s) -
Trainor Francis R.
Publication year - 1966
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.1537-2197.1966.tb06864.x
Subject(s) - biology , scenedesmus , axenic culture , appendage , dispar , botany , axenic , algae , zoology , bristle , anatomy , microbiology and biotechnology , genetics , entamoeba histolytica , brush , electrical engineering , bacteria , engineering
In a comparative study, six strains of Scenedesmus isolated from one small pond were examined in culture. Three of the isolates, S. denticulatus, S. dispar , and S. abundans , proved to be morphologically quite stable when studied in the laboratory. In an axenic culture of any one of the three pleomorphic strains one could find coenobia which resemble S. longispina or S. armatus. High percentages of four‐celled coenobia with several ridges but with only two spines (the S. semipulcher type) were found typically in older cultures of two of the pleomorphic cultures. Long, delicate appendages (bristles) were easily detected on most coenobia in desiccated preparations of all but the S. dispar culture. The use of cultures in identifying Scenedesmus coenobia is discussed.